

INDEX-GLOSSARY. 399 



Spleen, 248, 292. 



Spontaneity Amoeba, 11; Vorticella, 16; Hydra, 26; Rana, 216, 319. 

 Spontaneous, of action Not directly dependent 011 external stimuli, 102. 

 Spore (vTTopa, seed), in Protozoa One of many minute individuals into 



which the encysted individual may break up, 

 Sporocyst (oTropa } seed ; KUO-TIS, a bag, a bladder), in the Fluke A sac-like 



asexual stage, 35, 37. 

 Sporoduct, 19. 

 Sporozoa, 339. 



Spot, germinal The nucleolus of the ovum, 7. r. 

 Squama (squama, a scale), 89. 

 Squamous Scale-like, 177. 

 Starch, 58. 

 Sternebne(<rre'pi'j>, the breast), in Mammalia The segments of the sternum, 



280. 



Sternum In Crayfish, 84 ; in Vertebrata, the breastbone. See Bones. 

 Stomach, 42, 141, 160, 190, 286. 

 Stomodteum (o-ro^ct, the mouth) The anterior part of the alimentary canal 



originating as an epiblastic pit ; the fore-gut, 48. 

 Strainer, 92, 93. 

 Stratified, 177. 

 Streak, Primitive A mesodermic thickening in the posterior part of the 



embryonic area, which represents the blastopore of other forms, 256. 

 Stroma (<n-pwjua, anything which is spread out) The connective-tissue 



framework of an ovary, 251, 299. 

 Structure Amoeba, 8; Vorticella, 13. 

 Sturgeon, 153. 



Subcutaneous Lying beneath the skin, 269. 

 Sucker, 28, 34, 75. 

 Sumatra, 349. 

 Supination (supinus, bent backwards, lying on its back), of the fore-arm 



The position in which the palm is upwards and the radius and ulna 



parallel, 281, 326. 

 Support, 311. 



Supra-scapula A cartilage united to the upper edge of the scapula, 185, 280. 

 Supra-scapular border The upper edge of the scapula, 280. 

 Suspensorium (suspendo, suspensum, hang up) The arrangement by which 



the lower jaw is suspended to the skull, 182. 

 Suture, in the Skull A jagged union between two bones, 271 ; Coronal s., 



272; Frontal s., 272; Lambdoidal, 272; Sagittal, 272.: 

 Swimbladder, 153. 

 Swimmeret, 84. 

 Swimming, 318, 319. 



