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Of or pertaining to the Isospondyli; having the anterior vertebræ separate and normal.

ed, African rhinoceros (Atelodus keitloa). It has the posterior horn about as long as the anterior one, or even longer.

The lower or apparently anterior petal of an orchidaceous flower, often of a very curious shape.

the middle line, but bearing a pair of palpi in most insects. It often consists of a thin anterior part (ligula or palpiger) and a firmer posterior plate (mentum).

The anterior portion of the cheeks of insects.

. Its wings are delicate light green, with a stripe of purple along the front edge of the anterior wings, the other margins being edged with pale yellow. Each wing has a lunate spot surrounded by rings of light yellow, blue, and black. The caterpillar commonly feeds on the hickory, sassafras, and maple.…

An order of fishes in which the fin rays, except the anterior ray of the pectoral and dorsal fins, are closely jointed, and not spiny. It includes the carp, pike, salmon, shad, etc. Called also Malacopteri.

The anterior pair of mouth organs of insects, crustaceaus, and related animals, whether adapted for biting or not. See Illust. of Diptera.

The principal mandibular bone; the mandible. Mandibular arch (Anat.), the most anterior visceral arch, -- that in which the mandible is developed.

The anterior segment of the thorax in insects. See Insect.

enera. They are remarkable for their slender grotesque forms, and for holding their stout anterior legs in a manner suggesting hands folded in prayer. The common American species is M. Carolina. Mantis shrimp. (Zoöl.) See Sguilla.

A handlelike process or part; esp., the anterior segment of the sternum, or presternum, and the handlelike process of the malleus.

Having the anterior part of the head differing decidedly in color from the rest of the plumage; -- said of birds. Masked ball, a ball in which the dancers wear masks. -- Masked battery (Mil.), a battery so placed as not to be seen by an enemy until it opens fire. H. L. Scott. -- Masked crab (Zoöl.), a European crab (…

The bone or cartilage forming the anterior extremity of the lower jaw in some adult animals and the young of others.

e enteron and is lined with hypoblast. It is distinguished from the stomod, a part at the anterior end of the canal, including the cavity of the mouth, and the proctod, a part at the posterior end, which are formed by invagination and are lined with epiblast.

A tubercle projecting from the anterior articular processes of some vertebræ; a mammillary process.

tina), found in the Southern United States. It has persistent external gills and only the anterior pair of legs. See Siren. -- Mud frog (Zoöl.), a European frog (Pelobates fuscus). -- Mud hen. (Zoöl.) (a) The American coot (Fulica Americana). (b) The clapper rail. -- Mud lark, a person who cleans sewers, or delves i…

The basal thickened portion of the anterior wings of certain hemiptera.

The nostrils or nasal openings, -- the anterior nares being the external or proper nostrils, and the posterior nares, the openings of the nasal cavities into the mouth or pharynx.

the nose and the front of the head; as, the embryonic nasofrontal process which forms the anterior boundary of the mouth.