PART 5 A MONOGRAPH OF THE EXISTING CRINOIDS 57 



place. Dr. Clark commented that obviously this fine species cannot be considered at 

 all common in the Broome region. 



Localities. Between Cape Villaret and Broome, Western Australia; 9-15 meters; 

 H. L. Clark, June 1932 [H. L. Clark, 1938] (2, M.C.Z. 956). Type locality. 



Broome; at extreme low water, far south of the jetty; H. L. Clark, September 5, 

 1929 [H. L. Clark, 1938]. 



Geographical range. From Broome to Cape Villaret, Western Australia. 



Bathymetrical range. From the low tide mark to 15 meters. 



History. Monilimetra poecila was described by Dr. H. L. Clark from a specimen 

 dredged between Cape Villaret and Broome in 5-8 fathoms In June 1932. At the same 

 time he mentioned another from the same locality, and two more from Broome taken 

 on September 5, 1929. 



TOXOMETRA LEPTA (H. L. Clark) 



Monilimetra lepta H. L. CLARK, Mem. Mus. Comp. Zool., vol. 55, 1938, p. 51 (description; Broome, 

 5-8 fathoms); figs. 7, 8, p. 52; Echinoderm fauna of Australia, 1946, p. 63 (in key; very light 

 colored). 



Diagnostic features. The cirri have 15 to 17 segments, of which the fifth and 

 sixth are the longest but not quite twice as long as wide; P 3 is conspicuously larger than 

 P 4 , with at least 23 segments as opposed to about 15; the brachials are not conspicuously 

 flared. 



Description. The centrodorsal is low hemispherical, about 2 mm. in diameter, 

 with the bare dorsal pole rough with minute cirrus sockets. 



The cirri are XXXV, 15-17, crowded and more or less strongly recurved. The 

 fourth to sixth segments are the longest and least compressed, but the length is scarcely 

 equal to twice the diameter at the middle; distally the segments become shorter and 

 broader and moderately compressed. The opposing spine is low and inconspicuous. 

 The terminal claw is small but sharp and curved. 



The radials are concealed. The IBr! are short, at least four times as broad as 

 long. The IBr 2 (axillaries) are more or less triangular or low pentagonal; the lateral 

 margins may be considered as blunt points on a triangle or as very short sides of a 

 pentagon; the width of the axillaries is considerably greater than the length. The 

 synarthrial articulations are not very close, and synarthrial tubercles are insignificant 

 or wanting. 



The 10 approximately equal arras are about 35 to 40 mm. long. The number of 

 brachials probably exceeds 80. The characters of the brachials and position of the 

 syzygies are essentially as in T. nomima. 



P, is about 6 mm. long with some 20 segments of which only the basal 6 or 7 are 

 broader than long, so that the moniliform character of the pinnule is not conspicuous. 

 P 2 is similar but is longer and stouter, with about the same number of segments, but 

 only about three of the basal are broader than long. P 3 is conspicuously longer, at 

 least 15 mm. long, and stouter, with 23 or more segments, of which all but the two or 

 three basal ones are much longer than broad. P 4 is distinctly smaller with about 15 

 segments and P 5 is similar but smaller still. The pinnules following are not peculiar. 

 The spininess of the distal margins of the pinnule segments is more or less evident 

 under a lens, but is not at all conspicuous. 



The disk is plump and relatively large. 



