GLOSSARY. 679 



Pupa. (From the Latin for a doll or little image.) The passive state of an insect 

 immediately preceding the last. 



PupiPAROus. (Lat. pupa; pario, I produce.) The insects that bring forth their 

 young in the pupa state. 



Pylorus. From the Greek. The aperture which leads from the stomach to the in- 

 testines. 



PrRiFORM. (Lat. pyrum, a pear.) Pear-shaped. 



QuADRiFiD. Cleft in four pai-ts. 



Quaternary. In chemistry, bodies composed of four elementary substances. 



Radiata. (Lat. 7-adius, a ray.) The name of the lowest primary division of the 



animal kingdom. 

 Ramose. (Lat. ramus, a branch.) Branched. 

 Keniform. (Lat. ren, a kidney.) Kidney-shaped. 

 Reptilia. (Lat. repto, I creep.) The class of Vertebrate animals with imperfect 



respiration and cold blood. 

 Rete Mucosum. The cellular layer between the scarf-skin and true skin, which is 



the seat of the peculiar colour.of the skin. 

 Rhyncholithes. (Gr. rliunchos, a beak ; lithos, a stone.) Beak-shaped fossils ; the 



extremities of the mandibles of Cephalopods, allied to the Nautilus. 

 RoTiFERA. (Lat. rota, a wheel ; fero, I bear.) The name of the class of infusorial 



animalcules, characterised by the vibratile and apparently rotating ciliary organs 



upon the heads. 



Salpians. (Gr. Salpe, a kind of fish.) The order of tunicated Mollusca which 

 float in the open sea. 



Sarcophaga. (Gr. sarx, flesh ; phago, I eat.) Flesh-eating animals. 



Sacciform. Shaped like a sac or bag. 



ScuTiBRANCHiATA. (Lat. scutum, a shield ; hragcliia, gills.) The order of gas- 

 tropodous Mollusca, in which the gills are protected by a shield-shaped shell. . 



Sebaceous. (Lat. sebum, tallow.) Like lard or tallow. 



Segjientation. The act of dividing into segments. 



Semilunar. Crescent-shaped, like a half-moon. 



Semipinnate, Fringed on one side. 



Sepal. The divisions of the calyx of a floAver. 



Septa. Partitions. 



Sericteria. (Gr. serikos, silky.) The glands which secrete the silk in the silk- 

 worm. 



Serrated. (Lat. serra, a saw.) Toothed like a saw. 



Sessile. Attached by a base. 



Set.e. (From the Latin for a bristle.) Bristles, or similar parts. 



Setigerous. Bristly. 



Siliceous. (Lat. silex, flint.) Flinty. 



Sinus. A dilated vein or receptacle of blood. 



Siphonostomous. (Gr. siphon, a tube ; stoma, a mouth.) Animals furnished with 

 a suctorious mouth like a tube. The term is usually applied to Crustacea so 

 characterised. 



Spatulate. (Lat. spatula.) Shaped like a spatula. 



Spermatheca. (Gr. sperma, seed ; theke, sheath.) A receptacle attached to the 

 oviducts of insects. 



Spermatoa. (Gr. sperma, and gov, an egg.) The nucleated cell in which the sper- 

 matozoon is developed. 



Sperimatophora. {GiV. sperma; phero, I bear.) The cylindrical capsules or sheaths 

 which convey the sperm. In the Cephalopods are called the moving filaments 

 of Ncedham, after their discoverer. 



Spermatozoa. (Gr. sperma ; zoon, an animal.) The peculiar microscopic moving 

 filaments and essential parts of the fertilizing fluid. 



Sphincter. (Gr. sphigkter.) The circular muscles which contract or close natural 

 apertures. 



SpicuLA. (Lat. spiculum, a point or dart.) Fine pointed bodies like needles. 



X X 4 



