"^"^ THE NEW EVOLUTION CT 



Fig. 83 . — A tapeworm (Echinococcus granulosus^ found in the dog, 



cat, mountain-lion, etc. From Hall, after Leuckart. 

 Fig. 84. — A myzostomid worm (M.y%pstomum costatu7n). From A. 



H. Clark, after Boulenger. 

 Fig. 85. — A jointed worm or annelid QAmphinome pallasif). From 



A. Agassiz. 

 Fig. 86. — A peridinian (Ceratium tripos^. From Sedgwick, after 



Stein. 

 Fig. 87. — A group of single celled animals — trypanosomes (Try- 



■panosoma -pecaudf) from a tsetse-fly (Glossina palpalis^. 



From Hindle, after Roubaud. 



Young Stages of Various Animals (Page 175) 



Fig. 88. — A bipinnaria — a young stage of the common starfish 



QAsterias rubens forbesit). From A. Agassiz. 

 Fig. 89. — A pluteus — a young stage of the common green sea- 

 urchin {Strongylocentrotus drdbachiensis^. From A. 



Agassiz. 

 Fig. 90. — A cyphonautes — a young stage of a polyzoan. From 



A. Agassiz. 

 Fig. 91. — A larval crustacean QPanopus, sp.). From A. Agassiz. 

 Fig. 92.. — A larval stage of a crab (Porcellana, sp.). From A. 



Agassiz. 

 Fig. 93 . — One of the young stages of the common green crab (Car- 



cinus manas^. From A. Agassiz. 

 Fig. 94. — A tornaria — a young stage of a balanoglossid. From 



A. Agassiz. 

 Fig. 95 . — A young stage of the common periwinkle (Littorind) of 



the New England coast. From A. Agassiz. 

 Figs. 96-99. — Larval stages of the liver fluke (Distomum hepati- 



cum?). Fig. 96. — A miracidium. After Thomas. 



Fig. 97. — A redia. After Thomas. Fig. 98. — A 



sporocyst containing redi^e. After Leuckart. Fig. 



99. — A cercaria. After Thomas. 

 Fig. 100. — The nauplius stage of a copepod (Dactylopus, sp.). 



From A. Agassiz. 

 Fig. ioi. — A young stage of a hermit-crab (Pagurus, sp.). From 



A. Agassiz. 

 Fig. loi. — An actinotrocha — a larval form of a phoronid. After 



Masterman. 



