142 'l\ (USI.KN, 



referred the species to a new genus of feminine gendei'. lie still |ire- 

 served the second name rtiber with a masculine inflection. To ii(la])t 

 the adjectival second name to (he genus-name, 1 June therefore called 

 the s])ecies E. rubra. 



Clarkometra n. gi'ii. 



In all morphological chararactei-istics this new genus proves to 

 be a Macro2)hreat form and is to be included in the subfamily Perome- 

 trinœ. (Nevertheless I will call attention to the fact that the dorsal 

 prominence on 5"'— 8"' eirral is a transversely curved, even crista. 

 This reminds one of the condition in the family folohometridœ, where 

 the crista is, however, always forked or serrate.) 



Clarkometra agrees with the Central-American genus Hypalo- 

 meira in the absence of Pj and P.^. but differs from this one by a low, 

 flattened Cd, by short cirri, which are composed of a rather small 

 number of about cubical segments, and by the occurrence of 2 pairs 

 of oral pinnules. Of the other distinguishing marks I ought, perhaps, 

 to mention the appearance of the cirrus-sockets on Cd. (The per- 

 foration for the central canal is situated in the middle of a I'elatively 

 large calcareous wart located in the central part of the cavity in which 

 the cirrus is fixed) — A. H. Claek in a letter to me has supposed 

 that the species described below might possibly be identical with, or 

 nearly related to, »Antedon imjymiata» mentioned by P. H. Carpenter 

 from Mauritius (Chall. Exp. p. 200). It is possible, though not very 

 likely, that the new species might be nearly related to Carpenter's 

 species — from his very incomplete description one only learns that 

 Pa, Pi5 and P2 are absent — that it is identical with my species I con- 

 sider to be out of the question, partly because of the statements about 

 the number of cirri and eirrals, partly on account of the geographical 

 distribution. Besides, the statements about the pinnulation rather point 

 to a young animal than to a full-grown individual. For in connection 

 with the notice of absence of P2, Pa f^nd Pb nothing is said about Pj, 

 and one must therefore suppose that this pinnula is present. 



This new, very interesting genus, I have called after A. H. Clark, 

 who has done such very meritorious work on the systemisation of 

 the Comatulids. 



