and becomes flagellate distally. P is 10 mm. long with 23 segments, resembling 1',. I' is 

 g min. long with :i segments, similar to, bul slightly more slender than, the pinnules preceding; 

 it is very slightly less si. mi 1 ..i^.ill\-, bul tapers less and lacks the flagellate tip. I', is s mm. 

 long with 18 segments and resembles I'. 



1' lias the basal segments more 1 il away than I' . and I', than I' ; I', has a longer 

 flagellate tip than I' , and is in general more flexible; 1', difters from I' in the same way. 



rhe individual from Stat. 17'' is slightly larger with a shorter centrodorsal, the sides 

 ui which make a slightly greater angle with each other; the centrodorsal measures 5.6 mm. in 

 diameter at the has.- and 5.0 mm. from the apex to the interradial border; the dorsal pole 

 is worn and rounded <>tï: only one of the columns of cirrus sockets consists of four, but this 

 appears to be due to the wear on the dorsal pole which extends basalward tor a greater 

 mo- than usual, apparently due to the age of the specimen. 



The distance from the radials to the first syzygy is 7.8 mm.: tin- diameter at the level 

 of the first syzygy, beyond which point the arms are lost. is 15.5 mm. 



S. Psathyr ometra parva \. 11. Clark. 



.\. II. Cl.ARK. Proc. U.S. National Museum, vol. 39, [Qii, p. 562 [Psathyr ometra parva). 



Psathyr ometra minima A. II. Clark. 

 .\. II. CLARK. Notes from the Leyden Museum, vol. 34, 1912, p. 141 [Psathyrometra minima). 

 Stat. 4S. S ;, 4'.; S., ii8°44'.3l.. Flores Sea. 2060 Metres. 1 Ex. 

 The centrodorsal is sharply conical, i.S mm. in diameter at the base and 1.0 mm. from 

 the . 1 tin- interradial border; somewhat irregular shallow grooves averaging about half 



as v. the cirrus sockets separate the sides of the centrodorsal into live radial areas each 



of which contains two closely crowded columns of cirrus sockets usually of two each. 



The radials project very slightly bevond the edge of the centrodorsal and are strongly 

 produced in the- interradial angles so that tliey entirely separate the bases of the IBr,; the 

 [Br are about twice as broad as Ion-, and are deeply incised by a rounded posterior projection 

 from the axillary; the IBr (axillaries) are rhombic with strongl) concave sides, about as long 

 as broad, the anterior angle strongly produced, and the centre of the proximal border produced 

 into a rounded process incising the distal border oi the ibr. 



The three brachials preserved resemble those of such species as Ps. congesta but the 

 synarthrial tubercles are scarcely developed. 



I,. distanci from the apex of the centrodorsal to the firsl syzygy is 5.5 mm. 



ro. Psathyrometra gracillima \. II. Clark. 



A. 11. CLARK, i . Wa hington, vol. 22, 1 109, p. [49 [Psathyrometra gracillima). 

 Cru: the [ndian Ocean, [912, p. ';'•, fig. 44, p. 237 [Psathyrometra gr acilh 



11. Psathyrometra congesta \. II. Clark. 



A. II. CLARK. Proc. U.S. National Museum, vol. 54, 1908, p. 2:1 [Psathyrometra 



