CHAP, iv.] THE CRUISES OF THE l PORCUPINE: 181 



Geryon tridens, is a fine Norwegian species. With 



these are associated two forms of a more southern 



character, Inachus dorsettensis and Ebalia cranchii, 



which I should not have expected at so great a 



idepth." The echinoderms were a very northern 



group. They included Cidaris papillata, Echinus nor- 



vegicus and E. microstoma, the young of Urissopsis 



lyrifera, Astropecten arcticus, Archaster andromeda, 



,nd A. parellii, with a small specimen of Ophio- 



wsium lymani, several examples of Ophiacantha 



inulosa, and as usual one or two of the universally 



istributed Echinocucumis typica. Dr. Mclntosh, to 



rhom the annelids were referred, notices as a species 



upposed to be specially northern, Tkelepus coro- 



,atus, EAB.; and Iloltenia carpenter i, our familiar 



Honoring sponge, of all sizes and ages and in consider- 



ble numbers, was entangled in the hempen ' swabs.' 



July 9th. The wind still too light for effective 



ork. Dredged in 717 and 358 fathoms, the assem- 



lage of mollusca having the usual character of being 



o a great extent common to the recent fauna of the 



eas of Norway and to the pliocene fauna of Sicily 



nd the Mediterranean. It included on this occasion 



Terebratella spitzbergensis, an arctic and Japanese 



orm, Pecten vitreus, and P. aratm, Leda pernula, 



Trochus suturalisy Odostomia nitens, and Pleurotoma 



upidulum. Among the echinoderms was a fine 



pecimen of Brisinga endecacnemos, ABSJORNSEN, 



ery markedly different from B. coronata, which was 



he form commonly met with in the north. The 



orals were represented by AmphikeUa oculata and 



Desniophyllum crista-galU. Among the annelids were 



Pista cristata, O. P. MULLER, and Trophonia glaucv. 



