224 s. goto: 



lu the centi-e of the disk there is a large, conspicuous, and well-developed 

 conical prominence, upon and in the neighbourhood of which the paxillae are 

 greatly reduced in size. No anal puncture is traceable. 



"The madi'eix)riforra body is small and situated at about one third of 

 the distance from the margin to the centre of the disk. The terminal (ocular) 

 plate, though small, is conspicuous and elongately oblong. 



" Colour in alcohol, umber-brown, becoming lighter in shade towards the 

 extremities of the rays. The spinelets white. Small sx^ecimens yellowish wliite. 



"Station 232. Lat. 35° 11' N., long. 139° 28' E. Depth 345 fms.; 

 bottom temperatm-e 5°.0C.; sandy mud." 



Sladen's final description of this species, which closely follows the 

 preliminar}', was published in the Challenger Report, as follows [ '89, p. 198] : 



" Asfropeden hrevispinus, Sladen (PL XXXIII. figs. 1 and 2 ; PL 

 XXXVn. figs. 1-3). 



" Asfropeden hrevispimis, Sladen, 1883, Journ. Linn. Soc. Loud. (ZooL), 

 Vol. XVn, p. 249. 



" Piays five. 1\ — 32 mm.; r = 10 mm. R>3 r. Breadth of a ray at the 

 base, about 11 mm. 



" Kays tapering regularly from the base to the tip, and terminating in 

 a point. Interbrachial arcs shghtly rounded. 



"The paxiUse of the abactinal area are small and compact, and composed of 

 six to nine spinelets, of which one is central. The spinelets, wliich are short 

 and robust, are directed upward, and their radiation apart is very slight. No 

 definite order is maintained in the arrangement of the paxillae. The papulae 

 are small, and dark brown or almost black in colour ; and a broad space 

 occurs along the median hue of the ray in which none are present. In the 

 centre of the disk there is a large and conspicuous conical prominence, upon 

 and in the neighbourhood of ■v^•hich the paxillas are greatly reduced in size. 



" The stipero-marginal plates, which are twenty-two in number 

 from the median iuteiTadial hne to the exti'emity, are liigher than broad 

 along the inner half of the ray, but broader than high on the outer 

 portion. Each plate, excepting two or thi*ee in the interbracliial 

 arc and a few at the extremity, bears two small, conical, sliarply 



