348 GLOSSARY. 



SCO-LEC'I-DA (Gr. skolex, worm). A division of the Annuloida. 



SCO'LEX (Gr. for worm). The embryonic stage of a Tape-worm, formerly 

 known as a " Cystic Worm." 



SOU'TA (Lat. scutum, a shield). Applied to any shield-like plates ; especially 

 to those which are developed in the integument of many Keptiles. 



SE-LA'CHI-A or SE-LA'CHI-I (Gr. selachos, a cartilaginous fish, probably a shark). 

 The sub-order of Elasmobranchii, comprising the Sharks and Dog-fishes. 



SE'PI-O-STAIRE (Lat. and Gr. sepia, the cuttle-fish.) The internal shell of the 

 Cuttle-fish, commonly known as the " cuttle-bone." 



SEP'TA. Partitions. 



SER-PEN'TI-FORM. Resembling a serpent in shape. 



SER-TU-LAR'I-DA (Lat. sertum, a wreath). An order of Hydrozoa. 



SES'SILE (Lat. sedeo, I sit). Not supported upon a stalk or peduncle ; attached 

 by a base. 



SE'TJS (Lat. for bristles). Bristles, or long stiff hairs. 



SE-TIF'ER-OUS. Supporting bristles. 



SE-TIG'ER-OUS (= Setiferous). 



SE'TOSE. Bristly. 



SI-LIC'EOUS (Lat. silex, flint). Composed of flint. 



SIN'IS-TRAL (Lat. sinutra, the^left hand). _ Left-handed ; applied to the di- 

 rection of the spiral in certain shells, which are said to be reversed." 



SI'NCS (Lat. sinus, a bay). A dilated vein or blood-receptacle. 



SI'PHOIT (Gr. siphon, a tube). Applied to the respiratory tubes in the Mol- 

 lusca / also to other tubes of different functions. 



SI-PHON-OPH'O-RA (Gr. siphon; &ndphero, I carry). A division of the Hydro- 

 zoo,, comprising the Oceanic forms ( Galycophoridm and Physophoridce). 



SI-PHON-O-STOM'A-TA (Gr. siphon ; and stoma, mouth). The division of G-aster- 

 opodous Molluscs, in which the aperture of the shell is not " entire," but 

 possesses a notch or tube for the emission of the respiratory siphon. 



SI-PHUN'CLE (Lat. siphunculus, a little tube). The tune which connects to- 

 gether the various chambers of the shell of certain Cephalopoda (e. g., the 

 Pearly Nautilus). 



SI-PHCN-CU-LOI'DE-A (Lat. siphunculus, a little siphon). A class of Anarthrop- 

 oda (Annulosa). 



SI-RE'NI-A (Gr. seiren, a mermaid). The order of Mammalia comprising the 

 Dugongs and Manatees. 



SOJ>ID-UN'OU-LA (Lat. solidus, solid ; ungula, a hoof). The group of Hoofed 

 Quadrupeds comprising the Horse, Ass, and Zebra, in which each foot has 

 only a single solid hoof. Often called Solipedia. 



SO-MAT'IO (Gr. soma, body). Connected with the body. 



SO-MAT'O-CYST (Gr. soma ; and Icustis, a cyst). A peculiar cavity in the cceno- 

 sarc of the Calycophorida (Hydrozoa). 



SO'MITE (Gr. soma}. A single segment in the body of an Articulate animal. 



SPER-MA RI-TJM. The organ in which spermatozoa are produced. 



SPER-MAT'O-PHORES (Gr. sperma, seed ; phero, I carry). The cylindrical cap- 

 sules of the Cephalopoda, which carry the spermatozoa ; sometimes called 

 the " moving filaments of Needham." 



SPER-JIA-TO-ZO A (Gr. sperma, seed ; and zoon, animal). The microscopic fila- 

 ments which form the essential generative element of the male. 



SPI'CU-LA (Lat. spiculum, a point). Pointed needle-shaped bodies. 



SPIN'NER-ETS. The organs by means of which Spiders and Caterpillars spin 

 threads. 



SPI'RA-CLES (Lat. spiro, I breathe). The breathing-pores, or apertures of the 

 breathing-tubes (tracheae) of Insects. Also the single nostril of the Hag- 

 fishes, the " blow-hole " of Cetaceans, etc. 



SPLANOH-STO-SKEI/E-TON (Gr. splagchna, viscera ; skeletos, dry). The hard 

 structures occasionally developed in connection with the internal organs or 

 viscera. 



SPONGE-PAR'TI-CLES. (See Sarcoids). 



SPON'GI-DA (Gr. spoggos, a sponge). The division of Protozoa commonly 

 known as sponges. 



