552 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.39. 



Station 5367. — Five specimens; one has twenty arms 85 mm. long 

 and cirri 40 mm. to 47 mm. long; all the IIBr series are 4 (3 + 4); 

 another has nineteen arms 115 mm. long and cirri 40 mm. to 45 mm. 

 long; seven of the IIBr series are 4 (3+4), two are 2; another has 

 twenty-three arms 110 mm. long, the cirri being 40 mm. to 45 mm. 

 long; the ten IIBr series and the three IIIBr series are 4 (3 + 4); 

 another has nineteen arms; three of the IIBr series are 2, six are 

 4 (3+4); the fifth specimen has twenty arms, the ten IIBr series 

 being all 4 (3 + 4). 



Station 5503. — ^Three specimens with twenty arms 120 mm. long; 

 twenty arms 115 mm. long; and nineteen arms 130 mm. long, 

 respectively. 



Station 550 Jj.. — Two specimens. 



Station 5506. — Two specimens, one with nineteen arms 90 mm. 

 long, the other small, with fifteen arms. 



Station 5536. — One specimen with twenty- two arms 160 mm. long 

 and cirri 40 mm. to 50 mm. long; one of the IIBr series is 2, the 

 remaining eight 4 (3 + 4) ; the axillary of one of the IIBr 2 series 

 bears on its inner face another axillary and on its outer the first ele- 

 ment of a IIIBr 2 series which is supported equally by the IIBr 

 axillary and by the outer side of the IIIBr axillary. 



All these specimens are somewhat smaller and more slender than 

 the type in the Indian Museum, with which they were directly com- 

 pared. The division series and lowest brachials are usually also 

 slightly more spinous, and thus more nearly like the brachials just 

 succeeding; there is, however, considerable variation in this character. 



THALASSOMETRA HIRSUTA, new species. 



Centrodorsal low conical, the dorsal pole finely papillose; cirrus 

 sockets arranged in ten columns of two or three each, the two col- 

 umns of each radial area being slightly separated proximally by a 

 narrowly linear or wedge-shaped papillose area. 



Cirri slender, XV-XXV, 48-66 (usually 54-66), 30 mm. to 50 mm. 

 long; first segment short, the following increasing in length and 

 becoming squarish or slightly longer than broad on the fourth ; fifth or 

 sixth a transition segment, about three times as long as broad ; fol- 

 lowing segment nearly as long, the succeeding gradually decreasing 

 in length, those in the distal part of the cirrus being somewhat 

 broader than long; after the transition segment the distal dorsal 

 edge slowly becomes produced, the short outer segments bearing 

 rather low blunt spines. 



Eadials concealed; IBr^ very narrow, crescentic, the edges all 

 around strongly everted and coarsely spinous, with a coarsely spinous 

 median carination and a few coarse spines scattered over the dorsal 



I 



