GLOSSARY. 349 



SPOKES (Gr. tpora, seed). Germs, usually of plants ; in a restricted sense, 

 the reproductive " gemmules " of certain Sponges. 



SPO'BO-SACS (Gr. spora, seed ; and sakkos. a bag). The simple generative buds 

 of certain Ifydrozoa, in which the medusoid structure is not developed. 



SQUA'MA-TA (Lat. squama, a scale). The division of Reptiles comprising the 

 OpJiidia and Lacertilia in which the integument develops horny scales, but 

 there are no dermal ossifications. 



STAT'O-BLASTS (Gr. statos, stationary ; Uastos, bud). Certain reproductive buds 

 developed in the interior of Polyzoa, but not liberated until the death of 

 the parent organ: sm. 



STEG-AN-OPH-THAL'MA-TA (Gr. steganos, covered; and opTithalmos, the eye). 

 Applied by Edward Forbes to certain Medusce, in wnich the sense-organs 

 ("marginal bodies") are protected by a sort of hood. The SteganophthaL- 

 mata are now separated from the true Medusidce, and placed in a separate 

 division under the name Lucernarida. 



STEL-LEB'I-DA (Lat. stella, star). Sometimes applied to designate the order 

 of the Star-fishes. 



STEL'LI-FOBM. Star-shaped. 



STEM'MA-TA (Gr. stemma, garland). The simple eyes, or " ocelli," of certain 

 animals, such as Insects, Spiders, and Crustacea. 



STEB'NUM (Gr. sternon). The breast-bone. 



STIG'MA-TA. The breathing-pores in Insects and Arachnida. 



STO'LON (Gr. stolos, a sending-forth). Off-shoots. The connecting processes 

 of sarcode, in Foramiwifera ; the connecting tube in the social Ascidians ; 

 the processes sent out by the coenosarc of certain Actinozoa. 



STO-MAP'O-DA (Gr. stoma, mouth : pous, foot). An order of Crustacea. 



STOM'A-TODE (Gr. stoma ; eidos,wrm). Possessing a mouth. The Infusoria 

 are thus often called the Stomatode Protozoa. 



STBEP-SIP'TE-BA (Gr. strep ho, I twist ; and pteron, wing). An order of In- 

 sects in which the anterior wings are represented by twisted rudiments. 



STBEPS-I-BHI'NA (Gr. strepho, I twist ; rines, nostrils). A group of the Quad- 

 rumana, often spoken of as Prosi/mice. 



STBOB'I-LA (Gr. strobilos, a top, or fir-cone). The adult Tape-worm with its 

 generative segments or proglottides ; also applied to one of the stages in 

 the life history of the Lucernarida. 



STY'LI-FOBM (Lat. stylus, a pointed instrument ; forma, form). Pointed in 

 shape. 



SUB-CAL-CA'EE-OTTS. Somewhat calcareous. 



SUB-CEN'TBAL. Nearly central, but not quite. 



SUB-PE-DUN'CU-LATE. Supported upon a very short stem. 



SUB-SES'SILE. Nearly sessile, or without a stalk. 



SUO-TO'BI-AL. 



SU-PI-NA'TION (Lat. supinus, lying with the face upward). The act of turn- 

 ing the hand with the palm upward. 



STJ-PBA-CE-SO-PHAG'E-AL. 



SU'TUBE (Lat. suo, I sew). The line of junction of two parts which are im- 

 movably connected together. Applied to the line where the whorls of a 

 univalve shell join one another ; also to the lines made upon the exterior 

 of the shell of a chambered Cephalopod by the margins of the septa. 



SWIM'MEB-ETS. The limbs of Crustacea, which are adapted for swimming. 



SYM'PHY-SIS (Gr. sumphusis, a growing together). Union of two bones in 

 which there is no motion, or but a very limited amount. 



SYN-AP-TIO'U-L^: (Gr. sunapto, I fasten together). Transverse props some- 

 times found in Corals, extending across the loculi like the bars of a 

 grate. 



SYS'TO-LE (Gr. sustello } I contract). Applied to the contraction of any con- 

 tractile cavity, especially the heart. 



TAB'U-L.E (Lat. tabula, a tablet). Horizontal plates or floors found in some 



Corals, extending across the cavity of the " theca," from side to side. 

 TAO'TILE (Lat. tango, I touch). Connected with the sense of touch. 

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