GLOSSARY. 133 



Spleen (Gr. splen, the spleen, milt). The largest of the 

 ductless glands, situate in the abdomen behind the 

 stomach. 



Splen'culi (L. little spleens). Detached nodules sometimes 

 found in the neighbourhood of the spleen. 



Sple'nial (L. splenium, a splint). A bone of the skull in some 

 Vertebrata. 



Sple'nic. Relating to the spleen, as the splenic artery which 

 supplies the spleen. 



Sple'nius ca'pitis (L. splenium, a pad ; caput, capitis, the head). 

 A muscle passing from the posterior cervical and ante- 

 rior dorsal regions to the back of the head. 



Sple'nius colli (L. splenium, a pad; collum, the neck). A 

 muscle passing from the upper dorsal to the cervical 

 vertebrae. 



Spon'gida. A group of the Metazoa comprising the sponges. 



Spora'dic (Gr. sporas, sporados, scattered). A term applied to 

 those ganglia, such as the cardiac, which are not directly 

 connected with either the cerebro-spinal or sympathetic 

 systems. 



Sporan'gium (Gr. spora, a seed; angeion, a vessel). The 

 receptacle in which the spores are in some plants contained. 



Spore (Gr. spora, a seed). The name given to the cellular 

 germinating body in Cryptogamic plants, as fungi, mosses, 

 ferns, &c. 



Spo'rocysts (Gr. spora, a seed ; kustis, a bladder). Tubes 

 formed from the caudal appendages of Bucephalus poly- 

 morphus, a parasite upon the fresh-water mussel, from 

 which tubes new Bucephali are developed by internal gem- 

 mation. 



Squall (L. squall, a kind of fish). A group of the Plagiostome 

 fishes which comprises the sharks ; also termed Selachii. 



Squa'ma occi'pitis (L. squama, a scale ; occiput, the back of the 

 head). A region of the occipital bone. 



Squama'ta (L. squama, a scale). A group of the insectivorous 

 edentates, the only genus of which has the body covered 

 with overlapping scales. 



Squamo'sal (L. squama, a scale). One of the bones of the 

 skull in the lower Vertebrata, represented in Human Ana- 

 tomy by the squamous part of the temporal bone, with the 

 zygoma and the articular surface of the lower jaw. 



Squa'mous (L. squama, a scale). Scaly ; applied to a portion 

 of the temporal bone. 



