' Travailleur ' Zoological Exploration. 39 



At the same depth, off Planiev, we obtained a new species 

 of the genus Galathodes, so abundantly represented in the 

 great depths of West- Indian sea, and the existence of which 

 in the Bay of Biscay we ascertained in 1880. This Gala- 

 thodes {G. Marionis), like its congeners, is blind; its eyes 

 exist, but have no pigment. 



Among the Mollusca some remarkable species dredged at 

 550 metres Avithin sight of Marseilles deserve to be cited, 

 such as Pholadomya Loveni of the coast of Portugual, Limop- 

 sis aurita, Terehratella septata of the Pliocene of Sicily, and 

 a new species of Nassa. We give also a list of the species 

 found at this depth *. 



Between 500 and 2600 metres there are formed at certain 

 points enormous accumulations of empty shells, Pteropods, 

 and pelagic Heteropods, over a bed of very fine mud, in which 

 live species of Nucida, iSyndesmya, Leda, A^assa, Siphonentalis, 

 and Dentaliiim ; specimens of Xylophaga dorsalis, a species 

 which often attacks the gutta percha of the telegraphic cables, 

 are lodged in the fragments of drift-wood. On the shore of 

 Morocco Ave collected Modiola lutea^ a species discovered in 

 1880 in the Bay of Biscay. Lastly, the sand and mud of 

 the Barbary coast are full of small MarginelUe, such as 

 characterize the shelly bottoms of Spain and Portugal. 



The investigation of the Bryozoa of the great depths has 

 been hitherto almost entirely neglected ; and hence Dr. JuUicn 

 has found in the collections made by us many remarkable 

 species whicli establish a passage between the fauna of tiie 

 Mediterranean and that of the Atlantic. Some of them were 

 previously represented only by forms regarded as peculiar to 

 the Cretaceous deposits. 



The Coelenterata include some interesting types ; and their 

 study has revealed facts which deserve mention. The Zoan- 

 tharia Malacoderma only furnished a large llyantlms Avith 

 long non-retractile tentacles. The Coralliaria are not nume- 

 rous. GaryopliylUa clavus was taken down to a depth of 

 300 metres. Dendrop)hyllia cornigera appeared off Ajaccio, 

 forming banks at 540 metres ; to its branches Avere attached 



* Pteropoda: HyalcBa tridentata, II. vaginellirm, Cleodora lanceolata. 

 Heteropoda : Carinaria mediterranea. Gasteropoda : Trophon 

 vaginatiis, Chenopiis Serrcsianus, JX'ciasa linuita, iV. Edwardsil, sp. n., 

 Emarginula fissure, liingicula leptochila. Scaphopoda : Dentaliwm 

 agile, Siphonentalis quinquangularis. Lamkllibuanchiata : Limopsis 

 aurita, L. minuta, Area pectunctdoidi'S, Mallctia cnneata, Xucida sulcata, 

 Pecten iti/luens, P. Hoskgmii, Astarte sulcata, Isocardia cor, Venus multi- 

 laniella, Necera cuspidata, N. abbreriata, Sgmlcsinga longicallus, Pholado- 

 mya Loveni. Bracuiopoda : Terehratella septata, Terebratula vitrea, 

 Terebratulina caput-serpentis. 



