152 U.S. NATIONAL MUSEUM BULLETIN 2 60 



ing articles distinct from either genus, all short, stubby, poorly pro- 

 duced, subequal in length, except for dactyl; uropods 1 and 2 with 

 rami equaling peduncles in length, uropod 3 with aspect of Andani- 

 opsis, rami equal to peduncle, outer with faint articulation between 

 articles 1 and 2 but without circumferential difference as in An- 

 daniopsis. 



Material. — Station 7229, juvenile, 1.7 mm. 



Remarks. — This stegocephalid is presumably a juvenile; its poorly 

 setose and poorly differentiated pereopodal articles are indicative of 

 its youth. It has generic characters of both Andaniella (maxillipedal 

 inner plates, maxilla 1) and Andaniopsls (maxilliped except inner 

 plates, gnathopods, uropod 3, mandibles) and its coxa 4 resembles that 

 of Andaniella. Both genera are monotypic and may have to be united 

 through the species at hand but a redefinition of the two genera, based 

 on spinose gnathopodal dactyls of Andaniella, would permit their 

 retention. The specimen at hand then would be assignable to 

 Andaniojysis. 



The upper lip and epistome of the specimen at hand were irreparably 

 damaged during dissection and the possible generic importance of 

 these characters prevents me from naming the specimen. 



Stenothoidae 

 Metopa Boeck 



Metopa ?samsiluna J. L. Barnard 



Figures 75, 76 

 fMeopa (Promctopa) samfiiliina J. L. Barnard, 196Ga, pp. 91-02, fig. 42. 



This large Metopa may be the male of M. sainsiluna, of which only 

 the female has been described. Apart from its masculine characters, 

 however, it differs from the female in the nontapering second articles 

 of pereopods 4 and 5 and has faint, bleached eyes composed of scat- 

 tered biblastomeric ommatidia. It resembles the female in antennae, 

 telson, accessory flagellum, coxae, gnathopod 1, and uropods. 



This male differs from the males of the several species discussed as 

 possible close relatives of the female by J. L. Barnard (1966a). It 

 is very close to M. hoecM Sars (1895, pi. 88) but the outer ramus of 

 uropod 2 is shorter than the inner, the palm of gnathopod 2 lacks the 

 deep excavation and gnathopod 1 is stouter and more strongly sub- 

 chelate than in M. hoecki. Antennae and uropods show affinities with 



