INVERTEBRATE ANIMALS OF VINEYARD SOUND, ETC. 455 



Stomotoca apicata, meclusfe. 

 Willia oruata, young' inediiSiB ; last of September. 

 Dipuruea conica, medusie ; July ; evening. 

 Gemmaria gemmosa, medusae; evening. 

 Pennaria tiarella, medusfe ; August, September. 

 Ectopleura ocliracea, medusa? ; September. 

 Nanomia cara, August, September; evening. 

 Physalia Aretbusa, July to September; day, (450.) 

 Velella mutica, August ; day. 



Polyps. 



Edwardsia, sp., larvfe in the " Arachuactis " stage; September; 

 evening, (451.) 



PROTOZOA. 



Numerous kinds of ciliated infusoria, (451.) 



List of species taken at the surface in winter, December to March. 



Crustacea. 



Crangon vulgaris, young. 



My sis Americana. 



Anouyx, (?,) sp. 



Calliopius la'viusculus, (439.) 



Poutogeneia iuermis. 



Gammarus uatator. 



Monoculodes, sp. 



Several species and genera of Copepods, very abundant. 



Larv£e of Balanus, December 21, January 7 and 8. 



• 

 Annelids, &c. 



Nereis virens, adult males. 

 Sagitta, sp., adult, abundant, (440.) 

 Pontouema marinum, adult. 

 Other Nematodes, undetermined. 



Acalephs. 



Pleurobrachia rhododactyla, young and adult, abundant, (450.) 

 Mnemiopsis Leidyi, adult, abundant, (450.) 

 Cyauea arctica, young ; March. 

 Tima formosa, adult, (449.) 



II. 10, — ANIMALS PARASITIC ON FISHES, ETC. 



Large numbers of fishes were examined, both iuternally and externally, 

 for parasites, and a large collection of such parasites was made. The in- 



