GLOSSARY. 



A. 



Abbreviate. Disproportionately short in 

 a part. 



Abdomen. In vertebrated animals, the low- 

 er belly, or that part of the body which 

 lies between the thorax and the bot- 

 tom of the pelvis. In the invertebrated 

 animals, the lower part of the body, 

 united to the thorax. 



Abdominal. Pertaining to the abdomen. 



Aberrant. Wandering, or deviating from ; 

 a term applied to those species which 

 deviate most from the type of their 

 natural group. 



Abnormal; Abnormous. Irregular, de- 

 formed. 



Abranchiate. Devoid of gills. 



Acanthocephalous. Pertaining to an order 

 of intestinal worms, which have the 

 head armed with spines or hooks. 



Accessory. Additional; subordinate to 

 the principal. 



Acclivous. Inclining by a gentle ascent. 



Acephalous- Having no apparent head : 

 a term to denote those animals in 

 which a distinct head is never de- 

 veloped. 



Acerons. A term applied to insects that 

 have no antennae. 



Acetabula. The fleshy sucking-cups with 

 which many of the invertebrate ani- 

 mals are provided. 



Achatine. Marked with various concen- 

 tric, curved, or parallel lines, resem- 

 bling the veining of an agate. 



Aciculce. Small spikes, spines, or pric- 

 kles with which many animals are 

 armed ; as the hedgehog, severalof the 

 Crustacea, &c. 



Acinaciate. Falchion-shaped. Curved, 

 with the apex truncate, and growing 

 gradually wider towards the end. 



Acinaciform. Whose horizontal sections 

 are acute-angled triangles gradually 

 increasing in diameter from the base 

 to the apex, and propagated in a 

 curved line. 



Acini. The secreting parts of glands, 

 when they are suspended like small 

 berries to a slender stem. 



Aciniform. Being in clusters like grapes. 



Acuducted. Scratched across very finely, 

 as if with the point of a needle or pin. 



Aculeated. Furnished with prickles, as 

 the body of a hedgehog ; or ending in 

 a sting, as the abdomen of a female 

 wasp or bee. 



Aculeiform. A term applied to the ovi- 

 positors of Hymenopterous insects. 



Acuminate; Acuminated. Terminating 

 gradually in a sharp point. 



Acute. Terminating in an acute angle. 



Adductor (Muscle). A muscle which 

 draws one part of the body towards 

 another. In shells that which closes 

 the two pieces of a bivalve together. 



Adeniform. Of a gland-like shape. 



Adeps. Fat; a concrete oily matter con- 

 tained in the cells of the adipose tis- 

 sue. 



Adernata. A term applied to the pupa of 

 an insect when the prior skin is thrown 

 off, and the eyes, antennae, legs, and 

 wings of the future perfect insect ap- 

 pear through the case. 



Adiaphanous. Not transparent in the 

 least degree. 



Adipocire. A substance of a peculiar 

 nature, being intermediate between 



