322 ECHINODERMA OF THE INDIAN MUSBUM . FART VH. 



this interrupted transv^erse ridge has resolved itself into two very small and very- 

 sharp tubercles situated side by side, which on the fifth segment preceding the 

 penultimate themselves give place to single median dorsal spines ; at all points 

 these dorsal processes are practically median; they are exceedingly minute, 

 and very sharp. 



The radials project very slightly beyond the edge of the centrodorsal : 

 their distal angles are slightly separated so that the bases of adjacent IBr , are 

 not in contact; the IBr^ are short, oblong, nearly four times as broad as long, 

 with a low, though distinct, broad rounded median carination ; the IBr.^ are 

 broadly pentagonal, half again as broad as long, the lateral edges as long as 

 tliose of the IBr , and making with them a broadly obtuse angle ; in their 

 proximal two-thirds they bear a broad rounded median carination similar to 

 that on the iBr j. 



The ten arms are about S'l inm. long, their structure resembling that of the 

 arms of G. (P.) chaclwicki ; the proximal oblong brachials have a slight trace of a 

 rounded median carination. 



P^ 4'5 mm. long with thirteen segments, evenly tapering to a delicate tip, 

 somewhat stiffened, rounded prismatic; the first two segments are short, the 

 third is slightly longer than broad, the fourth half again as long as broad, 

 the following slowly increasing in length so that the distal are about twice 

 as long as broad ; beginning on the third very small but very sharp spines are 

 developed on the distal ventral angles and in the middorsal part of the distal 

 edge of each segment; P.^ is 6 mm. long with twelve or thirteen segments, 

 resembling P, but larger, stouter and stiffer with slightly longer spines at the 

 distal edges of the segments; P^ is 3 mm. long, more slender than P^ though 

 essentially similar to it but without the spines on the distal edges of the 

 segments ; it is slightly stiffened ; P^ and the following pinnules are slightly 

 shorter than P^, and apparently are not stiffened, at least distally ; the distal 

 ]Mnnules are slender, 5 mm. long, with fifteen much elongated segments. 

 Locality. — (?) India. — One specimen. 



Remarks. — This new species is most nearly related to G. (P.) chadwicki, 

 with which it agrees in the relative proportions of its lower pinnules, though 

 these are as a whole much shorter. It is a smaller form than chadwicki 

 with proportionately shorter cirri which are composed of much shorter segments. 

 P.^ is much less elongate than the same pinnule in chadwicki, and is more 

 slender with fewer segments, which do not become so elongate distally. 

 In G. (P.) hrevicirra the cirri, though short, are one-third again as long as P.^, 

 while in C. {P.) chadwicki P,^ and the cirri are about of the same length. 



The only -other sj)ecies witli which this needs comparison is G. (P.) uwstoni of 

 Japan {Oligometra japonica A. H. Clark, Proc. U. S. Nat. Mus., vol. 34, p. 308; 

 not Anteion japonica Hartlaub, 1890), which also has short cirri resembling 

 those of Oligometra serripinna. In owstoni, however, the first three pinnules 

 are all approximately equal in length and simUarj though P, is a trifle more 



