A GLOSSARIAL APPENDIX, 



IN WHICH ARE COMPREHENDED 



NUMEROUS TERMS USED IN ZOOLOGICAL WORKS, 



AND OTHER WORDS OF FREQUENT OCCURRENCE IN 

 IF NOT PECULIAR TO, 



f Natural 



ABBREVIATE. Disproportionately short in 

 part. 



ABDOMEN. In vertebrated animals, the lower 

 belly, or that part of the body which lies 

 between the thorax and the bottom of the 

 pelvis. It is lined by a membrane called 

 the peritoneum, and is separated from the 

 breast internally by the diaphragm, and 

 externally by the extremities of the ribs. 

 In in vertebrated animals, the lower part 

 of the body, united to the thorax. It is 

 divided into segments or rings, om the sides 

 of which are small spiracles by which the 

 insect respires. In some it is covered by 

 wings and a case. 



ABDOMINAL. Pertaining to the abdomen. 



ABERRANT. Wandering, or deviating from ; 

 a term applied to those species which de- 

 viate most from the type of their natural 

 group. 



ABNORMAL : ABNORMOUS. Irregular,; de- 

 formed. 



ABRANCHIATE. Devoid of gills. 



ACAN THOCEPHALOUS. Pertaining to an order 

 of intestinal worms, which have the head 

 armed with spines or hooks. 

 I ACCESSORY. Additional ; subordinate to the 

 principal. 



Accnvous. Inclining by a gentle ascent. 



ACEPHALOUS. Having no apparent head : 

 a term to denote those animals in which a 

 distinct head is never developed. 



ACEROUS. A term applied to insects that 

 have no antennas. 



ACETABULA. The fleshy sucking-cups with 

 which many of the invertebrate animals 

 are provided, 



ACHATINE. Marked with various concen- 

 tric, curved, or parallel lines, resembling 

 the veining of an agate. 



ACICUL^E. Small spikes, spines, or prickles 

 with which many animals are armed ; as 

 the hedgehog, several of the Crustacea, &c. 



ACINACIATE. Falchion-shaped. Curved 

 with the apex truncate, and growing gra- 

 dually wider towards the end. 



ACINACIFORM. Whose horizontal sections 

 are acute- angled triangles gradually in- 

 creasing 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. 



ACUI.EATED. Furnished with prickles, as 

 the body of a hedge-hog ; 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, which 

 consist of the same parts, with the excep- 

 tion of the poison-bag, whether used as 

 weapons or merely in oviposition 



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 ; as 

 the adductor poUicis manus, which draws 

 the thumb towards the fingers. In shells, 

 that which closes the two pieces of a Bi- 

 valve together, the insertion of which is 

 indicated by an irregular depression in 

 each valve. 



ADENIFORM. Of a gland-like shape. 



ADEPS. Fat; a concrete oily matter contained 

 in the cells of the adipose tissue. It differs 

 in its properties in different animals, and 

 often differs also in the same animal at 

 different ages. 



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 appear through 

 the case. 



ADIAPHANOUS. Not transparent in the least 

 degree. 



ADIPOCIRE. A substance of a peculiar nature, 

 being intermediate between fat and wax, 

 and bearing a close resemblance to sper- 

 maceti. Different opinions have been en- 

 tertained as to the nature of the operation 

 by which adipocire is produced. From the 

 experiments of Dr. Gibbes (PM. Trans. 

 1794), it would appear that muscular flesh, 

 when buried in moist earth, is, by a pe- 

 culiar kind of decomposition, scarcely to 

 be considered as putrefaction, converted 



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