[4551 INVI'KTKBRATE ANIMALS OF VIXKYARD SOUND, ETC. Kil 



Stomotoca apical a, modus;!-. 

 Willia ornata, young* medusae ; last of September. 

 Dipurnea conira, medusa'; July; evening. 

 Gemmaria gemmosa, medusae; evening. 

 Pennaria tiarella, medusae ; August, September. 

 Ectopleura ockracea, medusae ; September. 

 Nanomia cara, August, September; evening. 

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

 Velella rnutica, August ; day. 



Polyps. 



Edwardsia, sp., larvae in the " Arachnactis " 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. 



Mysis Americana. 



Anonyx, (?,) sp. 



Calliopius heviusculus, (439.) 



Pontogeneia iuermis. 



Gammarus natator. 



Mouoculodes, sp. 



Several species and genera of Copepods, very abundant. 



Larvae of Balanus, December 21, January 7 and 8. 



Annelids, &c. 



Nereis virens, adult males. 

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

 Pontonema marinurn, adult. 

 Other Neinatodes, undetermined. 



Acaleplis. 



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

 Mnemiopsis Leidyi, adult, abundant, (450.) 

 Cyanea arctica, young ; March. 

 Tima formosa, adult, (449.) 



II. 10. ANIMALS PARASITIC ON FISHES, ETC. 



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

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



