12 "ALBATROSS" EASTERN TROl'ICAL rACIFIC EXl'EDITION. 



Another liaul made under the equator near tlie northern edge of the cold 

 current in 2320 fathoms gave us the same results. The pelagic fauna was 

 very abundant, the surface teemed with radiolarians, diatoms, and globi- 

 gerinse, and swarmed with invertebrates. The trawl contained a superb 

 collection of bottom species of Holothurians, Brisinga, Hyalonema, and 

 Neusina; Professor F. E. Schulze has shown these to be a new type of 

 Rhizopod which he has called the Xenophyophora,' and on this occasion we 

 brought up the only stalked crinoid collected during this expedition — parts 

 of the stem of two specimens of Rhizocrinus, of which, unfortunately, the 

 arms were wanting. 



PELAGIC AND INTERMEDIATE DEPTHS FAUNA. 

 Plate 3^. 



In tlie Panamic Basin to tlie northward of tlie Galapagos we occupied 

 ten stations with the tow-nets, hauling both at the surface and at 300 

 fathoms, and vertically from that depth; we also continued this pelagic 

 work at nearly all the stations from the Galapagos to Callao. 



When off Chatham Island we began to trawl, and used the tow-nets 

 regularly, occupying twenty stations as far as Callao. The nets were in 

 charge of j\Ir. F. M. Chamberlain. The pelagic collections, as a whole, are 

 remarkably rich. They are especially noteworthy for the great variety and 

 number of pelagic fishes obtained inside the 300-fatliom line at a consider- 

 able distance from shore — from 300 to 650 miles. Many of these fishes 

 had been considered as true deep-sea fishes, to be obtained only in the trawl 

 when dredging between 1000 and 1500 fathoms or more. On one occasion 

 the tow-net brought up from 300 fathoms, the depth being 1752 fathoms, no 

 less than 12 .species of fishes ; of some species of Myctophum we obtained 

 18 specimens; of another, 37; of a third, 45; in all, nearly 150 specimens. 

 On other occasions it was not uncommon to obtain 8 or 10 species, and from 

 50 to 100 specimens. Among the most interesting types of fishes obtained 

 in the tow-net I may mention Plagusias, Leptocephalus, and, as coming from 

 less than 300 fathoms, Stylophthalmus and Dissoma, both of which Chun 

 considers as deep-sea fishes, found in depths of 600 to 4000 meters ; also a 

 species of Eurypharynx obtained for the first time in the Pacific. Stylopli- 

 thalmus I had caught in the tow-net in 1900, during the Tropical Pacific 



» VaMivia Ex., Vol. XI, 1005. 



