5 th somewhat smaller than the 3 rd , while the 6 th and following teeth were much smaller and 

 oradually decreased in size. The single-jointed palp (Fig. J i) appears somewhat shorter with 

 regard to its width than that of Lept. serratorbita (C. Spence Bate, Report Challenger Macrura, 

 PI. CXXXIX, fig. ld), being just one and a half as long as wide-, the anterior margin is 

 truncate and tipped with 12 or 13 feathered setae, while 3 are implanted on the middle of 

 the slightly convex outer margin. 



The inner branch of the i st maxilla (Fig. 7/) has a conical shape with rounded tip, which 

 is beset with 6 or 7 spiniform setae, while 2 or 3 occur on the margins; its form in Lept. 

 serratorbita is somewhat different (Challenger Macrura, Fig. ie of Plate CXXXIX); the middle 

 lobe is armed, on its antero-internal margin, with 7 or 8 spines and a much larger number of 

 setae; the outer branch or palp, finally, has the same form as in Lept. serratorbita, but is 

 single-jointed, the "bud-like" terminal joint of Bate being not separated from the rest. 



The 2 nd maxilla (Fig. 7 k) much resembles that of Lept. serratorbita. Of the 3 inner lobes 

 the anterior is quadrangular, but one-fourth longer than wide, with rounded angles; the middle 

 lobe is not yet half as broad as the anterior, the proportion being as 7:3, its outer margin is 

 also rounded or truncate, the posterior lobe, finally, is triangular with acute tip; the outer margin 

 of the 3 lobes is closely fringed with feathered setae and there is a transverse row of 6 setae 

 on the 2" d lobe near the base. Scaphognathite well developed, the anterior lobe wider than 

 the posterior. 



The i st maxilliped (Fig. 7/, 7 m) much differs from that of Pasipluca Sav. In the first 

 place the coxopodite and the basipodite are produced inward together as a prominent broad lobe, 

 fringed with feathered setae on the outer margin, that bears a triangular notch or incision, 

 so that it is divided into an anterior lobe, the basipodite, and a much smaller posterior, the 

 coxopodite. The endopodite is also much more developed, its proximal half is much broader 

 than the narrow distal half and covered with feathered setae on the convex outer margin. 

 Beyond the rounded lobe of Boas the exopodite terminates in a broadly-foliaceous lobe, which 

 is hardly one and a half as long as broad and fringed with long feathered setae. Epipodite 

 very large, nearly as long as the exopodite. 



The 2 nd maxillipeds (Fig. 7 n), that resemble those of Lept. serratorbita, differ also from 

 those of Pasip/uza, because they are not pediform, the ischium and merus, as also the propodus, 

 being much shorter and broader. The terminal or f h joint (Fig. 70) appears, however, as a proper 

 dactylus, articulating, like in Pasip/ura, with the distal end of the propodus and not applied 

 to it as a strip; the dactylus, a little broader than long and half as long as the propodus, 

 terminates in a strong spine, one and a half as long as the joint itself, while both the outer 

 and the inner margin of the latter are armed with 3 somewhat smaller spines and with a few 

 setae ; all these spines are fringed, along their margins, with microscopical setulae. The propodus 

 has an oval form, is one-third longer than broad and the convex outer margin is armed with 

 5 or 6 spines and a few setae, while the inner is nearly straight. The merus is about one and 

 a half as long as wide and narrows a little towards the carpal articulation, the ischium, finally, 

 measures two-thirds the length of the merus and is nearly as long as broad. There is no exopodite. 



Like in the male, also in the adult female the terminal joint (Fig. 7 g) of the external 



