GLOSSARY. 99 



Pan'creas (Gr.pan, all; kreas, flesh). A gland connected with 

 the small intestine, which secretes a fluid which is em- 

 ployed in the process of digestion. 



Panni'culus adipo'sus (L. panniculus, a little rag; adeps, 

 ddipis, full of fat). A name given to the areolar tissue 

 of the true skin, because it contains lobules of fat in its 

 meshes. 



Panni'culus carno'sus (L. panniculus, a little rag ; carnosus, 

 fleshy). A group of muscles underlying the skin, which 

 are largely developed in most mammals. 



Panois'tic (Gr. pan, all ; don, an egg). A term applied to those 

 ovaries of insects which secrete only ova, in contradis- 

 tinction to those which secrete vitelligenous cells in addition 

 to ova. 



Papilla (L. a nipple). Applied generally to any minute nipple- 

 like body, and specially to the conical elevations of the 

 skin and mucous membranes employed in the perception 

 of touch and taste. 



Papilla folia'ta (L. papilla, a nipple ; folratus, leafy). An 

 oval laminated structure found on each side of the base of 

 the tongue in some animals. 



Papilla lachrymalis (L. lachrymal papilla). A small elevation 

 on the margin of each eyelid, which opens into the lachry- 

 mal canal. 



Papyra'ceous (L. made of the papyrus). Having a paper-like 

 texture. 



Par va'gnm (L. wandering pair). A name given to the 

 pneumogastric nerve on account of its wide distribution. 



Parabasalia (Gr. para, by, near; basis, a base, foundation). 

 The name given to the five pieces of the calyx which 

 articulate with the basalia in some Echinodermata. 



Paradl'dymus (Gr. para, near ; didumos, a testicle). A struc- 

 ture developed in the male from the Wolfiian body ; termed 

 also the organ of Giraldes. 



Paraglo'bulin (Gr. para, near ; globulin}. Another name for 

 fibrino-plastin, a substance closely allied to globulin. 



Paraglos'sa (Gr.para, beside; glossa, the tongue). The outer 

 terminal piece of the labium in some of the Insecta. 



Parapep'tone (Gr.para, near; peptone). A proteid substance 

 closely allied to peptone. 



Paraphrag'mal (Gr. para, beside; phragma, a partition). 

 Applied to the outer division of each endosternite in some 

 Crustacea. 



