242 s. goto: 



final region of cmomilîis, I liave baen able to make out a tiny pora in 2 

 specimens, and the intestine leading to the pore is well developed. It may 

 perliaps seem heretical to classify the present species with Lç.ptychaMer, but 

 anomrihis differs chiefly from L. pacifions in liaving a larger disk, shorter rays, 

 broader actiual interradial areas, and a slightly different ornamentation on 

 paxillœ and marginal plates. The superomarginals are only a trifle, if any, 

 larger in anomcdus although the inferomarginals are a little longer and not 

 quite so broad. The cliief diflerences are therefore in proportion. But 

 pacificus is an undoubted Leptychaster, an evident oifshoot of artlcus, of the 

 circumpolar faima. It therefore follows in due course tliat anomalns is a 

 LeptijcJiaster, although superficially different enough from kenjnelensls, perhaps 

 to warrant another generic designation if we did not liave the intermediate steps. 



" Without having examined specimens of Parastropeden inermis I hesitate 

 to fm'ther question the validity of the genus, although frankly I find no 

 generic characters other than the size of the superomarginals that can 

 separate the form from LeptycJiaster. At any rate, L. anomcikis differs from 

 P. inermis in having fewer fmTow spines, more x^axiUao spinelets, 5 and 6 

 papul88 about the very short-lobed roundish plates (instead of 4), and finally 

 in possessing a minute anal pore. The general facies of the 2 forms is stri- 

 kingly ahke." 



Vereill makes a new genus, Glyphaster, for the present species, but does 

 not give any generic diagnosis [ : 09a, p. 553]. 



Fisher gives a very detailed description of it as follows [ : 11, p. 48,4 figs.] : 



"Diagnosis. — Rays five. R = 27mm. ; 11=1.6 r. Breadth of ray at base, 

 19 mm. Usual form stellato-pentagonal ; disk broad, rays short, broad, and 

 blunt ; interbrachial arcs shallow and wide ; general form depressed ; abactinal 

 sm^face subplane, capable of slight inflation ; actinal surface slightly arched 

 due to rays bending upward ; marginal plates conspicuous, few in number, 

 devoid of any enlarged spines or specialised armature, but covered with short 

 spinelets ; actinal intermediate areas broad ; adambulacral plates with three 

 or fom- furrow spinules, and on actinal sm-faco with tln-ee longitudinal series 

 of smaller spinelets, decreasing in length toward outer edge of plate ; small 

 superambulacral plates present ; a very small anal pore present. 



