410 DR MURRAY ON THE DEEP AND SHALLOW-WATER MARINE FAUNA 



*Pteraster^ affinis, Smith. 



* ,, rugatus, Sladen. 



* ,, semireticulatus, Sladen. 

 * Retader 2^p^'e()nnator, Sladen. 

 *~Solaster suharcuatus^^ Sladen. 



Ophiuroidea : 



*Amphiiira angularis, Lyman. 



,, antarctica (Ljungman). 



,, stiideri, Lyman. 



* ,, tomentosa, Lyman. 

 Astrotoma agassizii, Lyman. 

 Gorgonocephcdus 2Murtalesii, Lyman. 



*0p1iiacantha imago, ^ Lyman. 



,, vivipara, Ljungman. 



*Ophioconis antarctica, Lyman. 

 Ophiocten amitinum, Lyman. 

 ,, sericeum, Ljungman. 

 *Op]bioglyp>ha ambigua, Lymau. 



* ,, hi-evispina,* Smith. 



* ,, deshayesi, Lyman. * 



* ,, hexactis;' Smith. 



* ,, intorta, Lyman. 



ECHIXOIDEA : 



Echinus magdlanicus, Phil. 



„ margaritaceus, Lamarck. 

 Goniocidaris canaliculata, Agassiz. 

 Hemiaster cavernosiis" (Phil.). 

 Schizaster moseleyi, Agassiz. 



' With the exception of two Atlantic species, I'temster carihhmus [from the West Indian area] and I'tcmster sordirluf 

 [from the "Talisman" or " Travailleur " dredgings], all the members of this genus are confined to tlie colder temperate 

 and frigid zones. Notwithstanding its wide range of distribution the genus appears to show only a comparatively small 

 amount of morphological plasticity. — (Sladen, Zool. Chall. Exp., part 51, p. 470.) 



2 l^'ilaster subarcvAtt as is nearly allied to Solaster endeca [from the Arctic and North Atlantic], of which it is perhaps 

 the southern representative. — (Sladex, Zool. Chall. Exp., part 51, p. 457.) 



^ (Jpliiacantha maijo represents in the Antarctic zone the Arctic Ophiacantlm anomula, from which it differs in 

 having a minute slender tentacle scale and only five arms.— (Lyman, Zool. Chall. Exp., part 14, p. 187.) 



^ Several species inhabiting the seas of the North bear a superficial resemblance to this form [Ophioglijpha 

 hrevispi'iuf^ : — such are 0. albicki, Forbes, 0. rohusta, Ayres, and 0. nodosa, Liitken. And besides these 0. Lymani, 

 Ljungman, from Patagonia, is very like it. — (E. A. Smith, Phil. Trans., vol. 168, p. 28L) 



^ Li colour and general appearance it [Ophioijhjpha liexactis] approaches 0. sarsii, Lutken, of the Greenland coast, 

 which seems to be its nearest ally ; but these sjiocies are so dift'erent from one another iu detail, that it is needless to 

 specify their distinctions. — (E. A. Smith, Phil. Trans., vol. 108, p. 280.) 



* The Challenger series [of Hemiaster cavenwsus] is so extensive, and shows such a range of variation both in form 

 and in the structure of the petals according to age' and sex, that I am quite convinced it is impossible to define the 



