74 



U.S. NATIONAL MUSEUM BULLETIN 260 



Figure 32. — Schisturella abyssi (Chevreux), female, 5.9 mm, 7230: a, pleonites 2-6; b, 

 telson; c, coxa 4; d, head and antenna 2; e,f, gnathopods 1,2; g, apices of lower lip; h~k, 

 pereopods 1,3,4,5. 



Schisturella grahenis, new species 



Figures 33, 34 



Diagnosis. — Lateral cephalic lobes moderately broad, narrowly 

 rounded but not acute ; eyes absent ; epistome of medium depth, flat, 

 process of upper lip long, slender, projecting strongly in front of 

 epistome; mandibular molar small, scarcely ridged; lower lip with 

 blunt apices; coxa 1 about 67 percent as long as coxa 2, thus coxa 1 

 long for the genus, anterodistal bevelment strongly curved, posterior 

 edge becoming oblique ventrally, thus coxa generally tapering distally, 

 article 2 of gnathopod 1 very slightly longer than coxa 1, article 6 

 shorter than 5, slender, palm very oblique and scarcely distinct in slope 

 from posterior margin but strongly defined by large spines, dactyl with 



