84 DISCOVERY REPORTS 



" kerguelenensis'' from Victoria Land are either L. accrescens or magnificus, or both. 

 Whether his records from the Cape of Good Hope really refer to this species can only 

 be determined by an examination of his specimens. Mortensen (1933) omits the 

 species from his revised list of sea stars of South African seas. 



Type locality. Kerguelen Island. 



Distribution. Kerguelen Island and Marion Island regions, shore to 384 m. 



Leptychaster kerguelenensis mendosus Koehler 



Leptotychaster mendosus Koehler, 1923, p. 98, pi. 12, figs. 3-5. 



St. WS 86, Falkland Islands, 53° 53' S, 60° 34' 30" W, 151-147 m., sand, shells, stones, i specimen. 



Koehler's only specimen measured R 40 mm., r 11 mm. The details of plates and 

 spines are closely similar to those of kerguelenensis. In mendosus the ray has a slightly 

 different contour, being broader and tapering from a less arcuate interbrachium. There 

 is less disparity in size between the mesial and lateral abactinal paxillae. 



It seems obvious that this form is very close to kerguelenensis, at best a race of that 

 species, for which reason I have employed a trinomial designation. 



Type locality. East of Tierra del Fuego, 54'^ 43' S, 64° 8' W, 86 m. 



Leptychaster flexuosus Koehler 



Leptotychaster flexuosus Koehler, 1920, p. 252, pi. 51, figs. 1-4; pi. 75, fig. 3. 

 St. 1660. Ross Sea, 74° 46-4' S, 178° 23-4' E, 351 m., 2 specimens. 



This remarkable species has been fully described and figured by Koehler, whose 

 only specimen measured R 130-135 mm., r 26 mm. The larger Discovery specimen 

 measures R 340-345 mm., r 36 mm., br 36 mm., breadth of ray half way to tip 13 mm. 

 At this point the inferomarginal plates are 2 mm. broad by i mm. long ; the supero- 

 marginal paxillae are 0-5-0-75 mm. broad. There are 358 inferomarginals in one series 

 from interbrachial angle to tip of the ray. 



There is a conspicuous band along the middle of the abactinal area of ray free from 

 papulae. The abactinal plates are roundish, except a narrow band adjacent to supero- 

 marginals. Here 4 or 5 plates of each oblique transverse row have short lobes. 



The functional gonads (male) are in tufts hanging from the genital stolon which is 

 well spaced from the superomarginals. They extend along ray from interbrachial angle 

 a distance equal to the minor radius. The genital stolon with very small undeveloped 

 gonads can be traced about the same distance beyond the functional gonads. But, with 

 such long rays, the point is only at about the end of basal fifth of ray. 



In this species, the angular series of marginal mouth spinelets which extends downward 

 to the peristome is well developed and rather more accentuated than in accrescens and 

 magnificus. It is also more sharply angular than in the small specimens of kerguelenensis 

 available for study. 



On the inner side of the base of the tube feet are numerous papiUiform outgrowths 

 which, when podia are contracted, touch the radial nerve and those of opposite podia. 



