2l8 



Thysanometra A. II. l lul.. 

 Kiv in the Species of the Genus Thysanometra. 



a Brachials following the second syzygy wedge-shaped, twice as broad as long, 

 soon becoming oblong, much broader than long; arms no mm. long; cirri 

 1 \ — LXX, 15—17, 35 mm. long; P, 14 mm. long with 35 — 40 short segments ; 

 1' [o mm. long with 20 segments of which all hut the basal three or four are 

 much elongated southern Japan; 126 — 355 Metres) tenelloides 



.1 Brachials beyond the second syzygy triangular, as long as broad, in the outer 

 part of the arm becoming very obliquely wedge-shaped and longer than broad; 

 arms 55 mm. long; cirri XXX +1 15 — 2 5+; 1 J 2 a bout tlie same length as 1\, 

 hut composed of stouter and more elongate segments (Admiralty Islands; 

 270 Metres tenuicirra 



1. Thysanometra tenelloides \.\. II. Clark). 



A. II. Ci. akk. Proc. U.S. National Museum, vol. 33, 1907, p. ji {Ante-Jon tenelloidi 



2. Thysanometra tenuicirra (F. II. Carpenter). 



1'. II. CARPENTER. "Challenger" Reports. Comatulae. iScSS, p. ittd. pi. 30. 1 . pi. 33. 



. 4 — 5 ; (Antedon tenuicirra . 

 A. H. CLARK. Smithsonian Misccllaneous Collections, vol. 61, 191 3. X" 13. p. 64 ('fliYsaiu- 

 tnetra tenuicirra). 



There is an unrecorded specimen of this species in tlie collection of the U. S. National 

 Museum Cat. V which was collected by the "Albatross" at Stat. 5221, between 



Marinduque and Luzon, Philippine Islands, in 347 Metres. 



Coccometra A. II. Clark. 



Key to the Species of the Genus Coccometra. 



a' 24 — 28 cirrus cirri very slender, with the fourth and following 



rments greatl) elongated, four to five or more times as long as broad; 



terminal claw straight, tapering to a sharp point; arms 60 mm. to 70 mm. 



long; then black spot on either side of each syzygial pair; P, 9111111. 



long with 35 — 40 segments; I' 5 mm. long with 12 — 15 segments (south- 



east of Santiago de Cuba; (.5 5 Metres) guttata 



Nol mor»- than 25 cirrus segments of which the distalmost are much shorter 

 than the elongate proximal, the penultimate being about as long as broad 

 and the antepenultimate and at least one of those immediately preceding bein^ 

 much less than twice as long as broad; terminal claw recurved 



segments in th<- distal half of I' very short. lik<- those in the proximal 

 half; no black markings; ossicles of the division series and lower brachials 



