GLOSSARY. 599 



structures occasionally developed in connection with the internal organs 



or viscera. 



SPONGE-PARTICLES. (See Sarcoids.) 

 SPONGIDA (Or. spogyos, a sponge). The division of Protozoa commonly known 



as sponges. 

 SPORES (Gr. spora, seed). Germs, usually of plants; in a restricted sense, 



the reproductive "gemmules" of certain Sponges. 

 SPOROSACS (Gr. spora, seed; and sakkos, a bag). The simple generative 



buds of certain Hydrozoa, in which the medusoid structure is not deve- 

 loped. 

 SQUAMATA (Lat. squama, a scale). The division of Reptiles comprising the 



0/t/tidia and Lacertilla in which the integument develops horny scales, but 



there are no dermal ossifications. 

 STATOBLASTS (Gr. statos, stationary ; blastos, bud). Certain reproductive buds 



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



the parent organism. 

 STEGANOPHTHALMATA (Gr. ster/anos, covered ; and ophthalmias, the eye). 



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



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



thalmata are now separated from the true Medusidce, and placed in a sepa- 

 rate division under the name Lucernarida. 

 STELLERIDA (Lat. stella, star). Sometimes employed to designate the order 



of the Star-fishes 

 STKLLIFORM. Star-shaped. 

 STEMMATA (Gr. stemma, garland). The simple eyes, or (t ocelli," of certain 



animals, such as Insects, Spiders, and Crustacea. 

 STERNUM (Gr. sternon). The breast-bone. 

 STIGMATA. The breathing-pores in Insects and Arachnida. 

 STOLON (Gr. stolos, a sending forth). Offshoots. The connecting processes 



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



the processes sent out by the coenosarc of certain Actinozoa. 

 STOMAPODA (Gr. stoma, mouth ; pons, foot). An order of Crustacea. 

 STOMATODE (Gr. stoma}. Possessing a mouth. The Infusoria are thus often 



called the Stomatode Protozoa. 

 STREPSTPTERA (Gr strepho, I twist ; and pteron, wing). An order of Insects 



in which the anterior wings are represented by twisted rudiments. 

 STREPSIRHINA (Gr. strepho, I twist ; rhines, nostrils). A group of the 



Quadrumana, often spoken of as Prosimice. 

 STROBILA (Gr. strobilos, a top, or fir-cone). The adult tapeworm with its 



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



the life-history of the Lucernarida. 

 STYLIFORM (Lat. stylus, a pointed instrument ; forma, form). Pointed in 



shape. 



SUB-CALCAREOUS. Somewhat calcareous. 

 SUB-CENTRAL. Nearly central, but not quite. 

 SUB-PEDUNCULATE. Supported upon a very short stem. 

 SUB-SESSILE. Nearly sessile, or without a stalk. 

 SUPINATION* (Lat. $uf)imi$, lying with the face upwards). The act of turning 



the hand with the palm upwards. 

 SUTURE (Lat. suo, I sew). The line of junction of two parts which are 



immovably 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. 



SWIMMERETS. The limbs of Crustacea, which are adapted for swimming. 

 SYMPFIYSIS (Gr. snmphusis, a growing together). Union of two bones in which 



there is no motion or but a very limited amount. 

 SYNAPTICUL^E (Gr sunapto, I fasten together). Transverse props sometimes 



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

 SYSTOLR (Gr. siistello, I contract). Applied to the contraction of any con- 

 tractile cavity, especially the heart. 



