NO. 15 RECENT CRINOIDS IN BRITISH MUSEUM CLARK 37 



long; P 4 is 4.5 mm. long; P 5 is similar, but shorter; the following 

 pinnules are small and weak ; the slender distal pinnules are 9.5 mm. 

 long. 



1. Locality. — Muscat, Arabia. 



Remarks. — The material consists of sixteen specimens, of which 

 that described is the largest. 



The color is yellow, narrowly but frequently banded with purple, 

 the cirri purplish ; or, purple and yellow in large blotches. 



Genus COLOBOMETRA A. H. Clark 



COLOBOMETRA PERSPINOSA (P. H. Carpenter) 



Antedon insignis 1882. Bell, Proc. Zool. Soc. London, 1882, p. 534 (1). 

 Antedon loveni 1884. Bell, "Alert" Report, p. 158 (1). 



1. Port Denison, Queensland ; 3-4 fathoms; "Alert." — One 

 specimen. 



Genus OLIGOMETRIDES A. H. Clark 



OLIGOMETRIDES ADEONJE (Lamarck) 



Antedon adeonce 1884. Bell, "Alert" Report, p. 156 (1). 

 Antedon pinniformis 1884. Bell, T. c., p. 156 (2). 

 Antedon bidens 1884. Bell, T. c., p. 158 (3). 



1. "Alert" Station No. 8f. — One specimen; the cirri are (about) 

 XX, 21 ; the transverse ridge has moved so far back that it is near 

 the proximal end of the cirrus segments, and the distal dorsal border 

 of the segments has become prominent so that the bidentate appear- 

 ance (in lateral view) is produced; the ten arms are 65 mm. long; 

 P x is the longest pinnule, and is stiffened ; P 2 is similar, but slightly 

 shorter; P 3 is similar, but slightly shorter than P 2 ; the ends of the 

 segments of these proximal pinnules tend to be slightly prominent. 

 The general appearance of the animal is strikingly like that of 

 Tropiometra carinata. 



2. Dundas Strait; northwestern Australia. — One specimen. 



3. Torres Strait; 10 fathoms; sand; "Alert." — One specimen, 

 similar to that from Station No. 87. 



4. Baudin Island: 8-15 fathoms. — One specimen. 



Genus OLIGOMETRA A. H. Clark 



OLIGOMETRA CARPENTERI (Bell) 



Antedon milberti 188,4. Bell, "Alert" Report, p. 156 (1).— 1894. Bell, 



Proc. Zool. Soc. London, 1894. p. 394 (4). 

 Antedon carpenteri 1884. Bell, " Alert " Report, p. 157 (2, 3). 

 Antedon serripinna 1894. Bell, Proc. Zool. Soc. London, 1894, p. 394 (5, 6). 



