AGASSIZ AND CLARK: REPORT ON ECHINI. 



119 



these groups is wholly like the Hawaiian Island form, collected by tlie "Albatross " 

 in 1902, nevertheless it does not seem to be practicable to distinguish more than 

 a single species. A large proportion of the present collection is made up of 

 young specimens, under 30 mm. in diameter, but the individuals range from 20 

 to 110 in in. 



Southwest of Koshika Islands, Japan, 369-406 fathoms 



Southwest of Koshika Islands, Japan, 406 fathoms. 



Southwest of Koshika Islands, Japan, 391 fathoms. 



Southwest of Koshika Islands, Japan, 391 fathoms. 



Southwest of Koshika Islands, Japan, 391 fathoms. 



Southwest of Koshika Islands, Japan, 427 fathoms. 



Southwest of Koshika Islands, Japan, 427 fathoms. 



Between Kagoshima and Kobe, Japan, 437 fathoms. 



Between Kobe and Yokohama, Japan, 253 fathoms. 



Between Kobe and Yokohama, Japan, 587 fathoms. 



OiTOmai Saki Light, Japan, 475-514 fathoms. 



0:f Omai Saki Light, Japan, 662 fathoms. 



Off Omai Saki Light, Japan, 918 fathoms. 



Sagami Bay, Hondo, Japan, 292 fathoms. 



Sagami Bay, Hondo, Japan, 369-405 fathoms. 

 Thirty specimens. 



Phormosoma hoplacantha Wtv. Thoms. 



Phormosoma hoplacantha Wy ville Thomson, 1877. Voy. Chall. Atlantie, 1, p. 148, 



fig. 35. 



A fairly good series of a Phormosoma, which seems to be identical with the 

 " Challenger " specimens of hoplacantha, was taken at the following stations. 

 Station 4923. In Colnett Strait, Japan, 1008 fathoms. 



" 4956. Between Kagoshima and Kobe, Japan, 720 fathoms. 



" 4958. Between Kagoshima and Kobe, Japan, 405 fathoms. 



" 49/3. Between Kobe and Yokohama, Japan, 600 fathoms. 



" 4980. Between Kobe and Yokohama, Japan, 507 fathoms. 



" 5078. Off Omai Saki Light, Japan, 475-514 fathoms. 



" 50 x 0. OlF Omai Saki Light, Japan, 505 fathoms. 



" 5082. Of Omai Saki Light, Japan, 662 fathoms. 



" 50S4. OX Omai Saki Light, Japan, 918 fathoms. 



" 50S6. Sagami Bay, Hondo, Japan, 292 fathoms. 

 Thirteen specimens. 



Phormosoma tenue A. Ag. 

 Phormosoma tenuis A. Agassiz, 1879. Proc. Amer. Acad., 14, p. 202. 

 The specimens referred to this species are of interest from having ophicephalous 

 pedieellariae in addition to the characteristic tridentate ones. As Doderlein (1906, 



