ZENOMETRINAE 



159 



(Fig. 8 e). The genital pinnules gradually increase in length and number of segments; 

 P4 is of 10 segments, 3-5 mm. ; Pjo of 13 segments, 4-5 mm. ; Pjg of 14 segments, 5 mm. 

 On the adoral side of each testis, opposite the third segment of the genital pinnule, there 

 is a small papilla through which presumably the spermatozoa pass to the outside. 



The distal pinnules are of 17 segments, all but the first two of which are two to three 

 times as long as broad; they have everted and spinous distal edges. 



Sacculi are very numerous and conspicuous, regularly arranged along the pinnule 

 ambulacra. 



There are reduced rod-like side-plates along the pinnule ambulacra; they may be 

 simple smooth rods, or they may be knobbed, or have branched or reticulated ends. 

 There are no spicules in the tentacles. 



b 



Fig. 8. Eumorphometra marri. a, cirrus, b, proximal part of ray. c, lower brachials and portions of Pj 



and Pg from side, d, P3. e, P^. All x 13. 



E. marri is distinguished from the other species of the genus by having its cirrus 

 sockets arranged in two or three alternating rows, not in columns ; by the fact that Pj 

 is not only longer but much more massive than Pg ; and by having the segments of the 

 lower genital pinnules which carry the gonads slightly expanded. 



Eumorphometra hirsuta (P. H. Carpenter) 

 AntedoH hirsuta P. H. Carpenter, 1888, p. 188, pi. xxxi, fig. 5. 



This species is known only from the single Challenger specimen from 140 fathoms near 

 Marion Island. It may be useful to add here a few notes based upon a re-examination 

 of the specimen. 



