GLOSSARY. 679 



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

 immediately preceding the last, 



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

 young in the pupa state. 



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

 testines. 



FrRiFORU. (Jjot. pyntm, & pear.) Fear-shaped. 



QuADsiFU). Cleft in four parts. 



QuATEEjf ART. In chcmistry, bodies composed of four elementary substances. 



Radiata. (Lat. radius, a ray.) The name of the lowest primary division of the 



animal kingdom. 

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

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

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



respiration and cold blood. 

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



the seat of the peculiar colour of the skin. 

 RHTifCHOLiTHEs. (Gr. rhutichos, a beak ; Uthos, 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 Tibratile and apparently rotating ciliary organs 



upon the heads. 



Salpiaxs. (Gr. SaJp&, a kind of fish.) The order of tnnicated MoUnsca which 



float in the open sea. 

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

 Sacciform. Shaped like a sac or bag. 

 SccTiBR-vscHiATA. (Lat. scutum, a shield ; bragchia, gills.'* The order of gas- 



tropodons Mollusca, in which the gills are protected by a shield-shaped shelL . 

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

 Segmektation. The act of dividing into segments. 

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

 Semipinxate. Fringed on one side. 

 Sepal. The divisions of the calyx of a flower. 

 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. 

 Sesshjs. Attached by a base. 



Setj:. (From the Latin for a bristle.) Bristles, or similar parts. 

 Setigerous. Bristly. 

 Siliceocs. (Lat. sUex, flint.) Flinty. 

 Sixus. A dilated vein or receptacle of blood. 

 SiPHoxosTOMous. (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. 

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

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



oviducts of insects. 

 Spermatoa. (Gr. sperma, and oon, an e^.) The nucleated cell in whidi the sper- 

 matozoon is developed. 

 Spermatophora- (Gr. sperma ; phero, I bear.) The cylindrical capsules or sheaths 



which convey the sperm. In the Cephalopods are called the mo\ing filaments 



of Needham, after their discoverer. 

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



filaments and essential parts of the fertilizing fluid. 

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



apertures. 

 Spiccxa. (Lat. spiculum, a point or dart) Fine pointed bodies like needle*. 



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