ZOOGENESIS 



Fig. i8. — A curious crustacean (Cystosoma nepun'i). From the 



Challenger reports. 

 Fig. i9. — A spider-crab QAnisonotus curvirostris) common in depths 



of 180-1,800 feet in the West Indies. From A. 



Agassiz. 

 Fig. 30. — A stalked barnacle QScalpellum penfacrinarum) known 



only from sea-lilies. From Pilsbry, after A. H. 



Clark. 



Some Fossil Animals (Page 55) 



Fig. 3 1 . — Restoration of an eurypterid (Eurypterus fischerf). After 



Schmidt. 

 Fig. 31. — A trilobite (Dalmanites Itmulurus^. From Zittel, after 



Hall. 

 Figs. 33-34. — An ammonite (Macrocephalites macrocephalus). 



From Zittel. 

 Figs. 35-36.' — A blastoid (Fentremites sulcatus). From Zittel. 

 Figs. 37-38. — A cystid (Echinospharites aurantium). From Zittel. 

 Fig. 39. — A graptolite (Tetragraptus bryonoides). From Zittel, 



after Hall. 

 Fig. 40. — A graptolite (Didymograptus pennatulus) . From Zittel, 



after Hall. 



Sea-urchin and Starfish (Page 71) 



Fig. 41. — A sea-urchin (Forocidaris sharreri) from the West Indies. 



From A. Agassiz. 

 Fig. 42.. — The only known individual of a starfish QAnthenea mexi- 



cana) from the west coast of Mexico, originally 



described by the author. 



Feather-star and Brittle-star (Page 87) 



Fig. 43. — The rosy feather-star QAntedon bifida). From A. H. 



Clark, after W. B. Carpenter. 

 Fig. 44. — A long armed brittle-star (Ophiocreas spinulosus). From 



A. Agassiz. 



Various Types of Mollusks, a Planarian, a Fluke, and a 



FORAMINIFERAN (PaGE 97) 



Fig. 45. — A cephalopod moUusk — a squid (Mastigoteuthis agas- 

 si^it). From A. Agassiz. 



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