24 GLOSSARY. 



Ceru'men (L. cera, wax). The waxy secretion of the glands of 



the external ear. 

 Ceru'minous glands (L. cera, wax). The glands which secrete 



the waxy material found in the external ear. 

 Cervi'cal (L. cervix, the neck). Relating to the region of the 



neck. 

 Cervi'cal scle'rites (L. cervix, neck; Gr. skleros, hard). 



Thickenings in the chitinous skeleton of a cockroach in 



the region of the neck. 

 Cervica'lis ascen'dens (L. ascending cervical). One of the 



dorsal muscles of the trunk. 

 Cer'vix (L. neck). The neck portion of an organ, as Cervix 



Uteri, the neck of the womb. 



Cestoi'dea (Gr. kestos, a studded girdle). The Tape-worms. 

 Ceta'cea (Gr. kctos, a whale). An order of the Mammalia 



which embraces the whales and dolphins. 

 Chsetog'natha (Gr. chaite, hair; gnathos, a jaw). A group of 



the Invcrtebrata, including only the genus Sagitta. 

 'Chala'zse (Gr. chalaza, hail). The twisted cord-like bodies 



which help to keep the yolk of an egg in position. The 



places where the vessels enter the nuclei of the ovules of 



a plant. 



ChalcI'dea (Gr. chalkis, a lizard). A group of the Lacertilia. 

 Chamaeleo'nidse (Gr. chamaileon, a chameleon). A group of 



the I^acertilia. 



Cha'ra. One of the water-weeds. 

 Charadriomor'phse (Gr. charadrios, the curlew; #w/^//<?, form). 



The Plovers, a group of birds. 

 Cheilostfi'mata (Gr. cheilos, lip, margin; stoma, stomatos, a 



mouth). A genus of Polyzoa. 

 Cheiromy'in> (Gr. cheir, cheiros, the hand; mus, a mouse). A 



family of Lemurs. 

 Cheirop'tera (Gr. cheir, cheiros, the hand ; pteron, a wing). A 



group of the Mammalia which comprises the bats. 

 Chelse (Gr. chcle, a claw;. The fourth pair of thoracic ap- 

 pendages in the Crustacea, commonly known in the lobster 



as the great claws. 

 Cheli'cera (Gr. chcle, a claw). A pincer-likc appendage on each 



side of the mouth in the Scorpions. 

 Chelo'nia (Gr. chelone, a tortoise). A group of the Rcptilia 



which includes the tortoises and turtles. 

 Chenomor'phaB (Gr. chcn, chcnos, a goose; morphc, form). The 



goose-like birds. 



