190 ECHINODERMA OF THE INDIAN MuSEUM, PART VII. 



PTEROMETRA SPLENDIDA. 



PtUometra splcmlkla 1909. A. H. Clark, Proc. U.S., Nat. Mus., vol. 37, p. :«. 

 Habitat. — Philippine Islands. 

 Depth. — 37 fathoms. 



PTEROMETRA TRICHOPODA. 

 PtiloiiieiKi trirhnpoda 1908. A. H. Clark, Smiths. Miscell. Coll. (Quarterly 



Issue), vol. 52, part 2, p. 224. 

 Pterometra trichopoda 1911. A. H. Clark, Proc. U.S. Nat. Mus., vol. 39, 



p. 545. 



Habitat — Philippine Islands. 



Depth. — 37 to 58 fathoms. 



Genus ASTEROMETRA. 



Asterometru 1907. .A. H. Clark, Smiths. Miscell. Coll. (Quarterly Issue), vol. 50, 

 part 3, p. 35S.— 1908. Bull. Mus. Coinp. Zool., vol. 51, No. 8, p. 245 

 (Antedou macropoda A. H. Clark, 1907). 



ASTEROMETRA M I R 1 FICA . 

 Atitedon longicirra (part) 1893. Bell, Journ. Linn. Soc. (Zool.), vol. 24, p. 339. 

 Asterometra miriftca 1909. A. H. Clark, Proc. Biol. Soc. Washinjjton, vol. 22, 



p. 146. 



Description. — This is a ten-armed species, in general similar to A. cristata 

 and to A. lomjicirra, but it may be readily distinguished from these species by 

 the very high sharp median keel on the IBr series and on the first two brachials; 

 this keel is conve.v in a profile view so that tiie outline of the lower part of the 

 animal is indicated by a series of couve.x scallops instead of by a straight line as 

 in A. cristata, or well-spaced angular tubercles as in A. longicirra. 



The colour in spirits is white, the perisome brown. 



Locality. —S aim I Bank (10° 30' S. lat., 125° E. long.).— One specimen. 



Remarks. — I have examined some additional specimens of this species which 

 are preserved in the British Museum : there appears to be but little individual 

 variation. 



ASTEROMETRA CRISTATA. 



Asterometra cristata 1911. A. H. Clark, Proc. U. S. Nat. Mus., vol. 39, p. 547. 

 Habitat. — Philippine Islands. 

 Depth. — 74 fathoms. 



ASTEROMETRA LONGICIRRA. 

 Antedon longicirra 1888. P. H. Carpenter, "Challenger" Reports, vol. 26, 

 Zoology, p. 103, pi. xvii. 

 Habitat. — Ki Islands. 

 Depth. — 140 fathoms. 



