732 BULLETIN 82, UNITED STATES NATIONAL MUSEUM VOLUME 1 



water pores between the division series, the IBr, having convergent hiteral edges. The 

 cirri and pinnules are unknown. 



Descnpiion. — The centrodorsal is conical, with the sides slightly convex, 3.5 mm. 

 broad at the base and 3.0 mm. high. 



The cirri are lacking. 



The distal edges of the radials are even with the rim of the centrodorsal. The 

 IBri are very short and bandlike, not quite in contact basally, with the lateral edges 

 converging rather sharply. The IBr2 (axillaries) are slightly broader than long, with 

 the anterior and lateral angles rather strongly produced and with a rounded posterior 

 process incising the IBri. 



The 10 arms are all broken ofT at the base; the longest stump measures 9 mm. to 

 the tenth brachial. 



The pinnules a e all broken. 



Locality. — Investigator station 232; Laccadive Sea, southwest of Cape Comorin, 

 India (lat. 7°17'30" N., long. 76°54'30" E.); 786 meters; temperature 3.3° C; gray 

 mud; August 19, 1897 [A. H. Clark, 1909, 1912] (1, I.M.). 



Remarks. — The only known specimen of this species is so fragmentary that perhaps 

 it should never have been described. It was dredged by the Investigator in 1S97 and 

 described in 1909, and again, in more detail and with a figure, in 1912. 



FARIOMETRA SEWELLI A. H. Clark 



Figure 46 



Fariometra sewelli A. H. Clark, John Murray Exped. 1933-34, Sci. Reports, vol. 4, No. 4, 1937, 

 p. 87 (listed), pp. 96, 97 (sta. 143; description; remarks), p. 102 (listed), p. 103, pi. 1, fig. 5. 



Diagnostic features. — The centrodorsal is large, conical, twice as broad at the base 

 as it is high; the cirri number about LV, with about 26 segments, of which the longest 

 are nearly three times as long as their proximal breadths and the last four or five 

 about as long as wide or shorter; the division series are modified to leave conspicuous 

 water pores between them ; Pj has about 23 segments, of which the first 5 are not longer 

 than broad; P2 has about 15 segments, is about two-thirds the length of Pi, and is a 

 genital pinnule in the unique type specimen. 



Description. — The centrodorsal is conical with straight sides and a quite sharply 

 rounded papillose apex. It is 3.5 mm. in basal diameter and about 1 .7 mm. high. The 

 cirrus sockets number about 55; they are rather small and well-spaced, and tend to 

 occur in vertical rows. There are about 4 sockets under each radial. 



A single detached cirrus which presumably belongs to this specimen was found 

 wedged between the arms. It has 26 segments and measures 13 mm. in length. The 

 first segment is very short, the second not quite as long as wide, the third is three- 

 quarters again as long as wide. The fifth and sixth are the longest and are just under 

 three times as long as broad at their pro.ximal ends and the following segments become 

 progressively shorter so that the fifth one from the tip is only as long as broad and 

 the penultimate is a little shorter. In shape, all the segments are somewhat expanded 

 at their distal ends, particularly on the dorsal side of the distal segments. The ante- 

 penultimate segment has a small tubercle on the middle of the dorsal side. The 

 opposing spine on the penultimate segment has a double apex; it is very well developed. 

 The terminal claw is strong and curved. 



