NO. 15 RECENT CRINOIDS IN BRITISH MUSEUM CLARK 55 



the third is about as long as broad, and the sixth and following are 

 greatly elongated and very slender, with expanded and spinous distal 

 ends ; P 3 is similar, very slightly when at all longer, but slightly 

 stouter, with fifteen segments, of which the outer are exceedingly 

 elongated ; P 4 is similar to P 3 and of the same length, very slightly 

 larger basally ; P 3 is 1 1 mm. long, resembling P 4 , but bearing a fusi- 

 form gonad ; P 6 is similar to P 5 and of the same length ; the follow- 

 ing pinnules increase gradually in length, P 14 being 14 mm. long 

 with twenty-two segments, most of which are greatly elongated with 

 very spinous distal ends ; the distal pinnules are 1 5 mm. long. All 

 the pinnules are slender and all are stiff, especially the lower, which 

 are thorn-like ; this stiffness, together with the exceptional develop- 

 ment of spines on the distal borders of their component ossicles, gives 

 the pinnules a great similarity to the pinnules of the species of 

 Colobometra. 



1. Thirty-three miles east of Pernambuco, Brazil; 23 fathoms. — 

 One specimen. 



Subfamily Zenometrin^: A. H. Clark 



Genus LEPTOMETRA A. H. Clark 

 LEPTOMETRA PHALANGIUM (J. Miiller) 



Antedon mediterraneus 1872. Wyville Thomson, Proc. Roy. Soc. Edin- 

 burgh, vol. 7, p. 765. 



Antedon phalangium 1881, P. H. Carpenter, Zool. Anzeiger, JG. 4, p. 521 

 (4, 5, 6, 7, 8). — 1884. P. H. Carpenter, Proc. Roy. Soc. Edinburgh, 

 vol. 12, p. 361 (4, 5, 6, 7, 8) . — 1886. P. H. Carpenter, Trans. Linn. Soc. 

 (Zool.), (2), vol. 2, p. 475 (1, 3, 4, 5, 6, 7, 8).— 1894. Kcehler, Mem. 

 Soc. Zool. France, vol. 7, p. 425 (2). — 1888. P. H. Carpenter, "Chal- 

 lenger" Report, Comatulse, p. 158 (1, 3, 4, 5, 6, 7, 8).— Brit. Mus., MS. 

 (2). 



i. Carthagena; "Porcupine," 1870 — Three large specimens; the 

 cirri are from 50 mm. to 55 mm. long ; the distal intersyzygial inter- 

 val is two oblique muscular articulations eight times, three oblique 

 muscular articulations fourteen times, and four oblique muscular 

 articulations twice. 



2. La dot at. — Two specimens. 



3. Naples. — Two specimens. 



4. Skerki Bank; 30-120 fathoms; " Porcupine" 18/0. — Four 

 specimens. 



5. Skerki Bank; "Porcupine" — Six specimens; the cirri are 

 from 43 mm. to 55 mm. long and are composed of 43-44 segments, 

 the last five tapering rapidly to a sharp point. 



