1510 THE VOYAGE OF H.M.S. CHALLENGER. 



same as Eupronoe, see Note on de Natale, 1850 (pp. 240, 241). Dana's Pronoe 

 brunnea is considered by Claus and Bovallius to belong to this genus. 

 Claus' fuller definition of the genus is to the following effect : — 



" Body Pronoe-like, still only little compressed, with short arched head. The front 

 antennae of the male seven-jointed, with three-jointed flagellum, those of the female six- 

 jointed. The hinder antennae of the male packed in with zigzag folds, the basal joint 

 very long, the terminal joint short, almost finger-like ; the hinder antennas of the female 

 weak, four-jointed. Mandibles compact, with deep cutting edge, bounded by two teeth. 

 The maxillary plates well developed. Maxillipeds with weak short inner plate, the outer 

 plates with deeply convex inner margin fringed with hairs. The first gnathopods com- 

 plexly subchelate, the second complexly chelate. Third perseopods long and strong, with 

 the laminar first joint forming a large elongate oval. The laminar first joint of the fourth 

 peraeopods broad and extensive, distally triangularly narrowed, with the distal margin 

 sinuous (mit ausgeschweiftem Vorderrand). Fifth perseopods reduced to a three-sided 

 pointed laminar first joint and a pimple-like appendage. Peduncles of the uropods 

 moderately shortened, those of the last pair very short. The rami of the last two pairs 

 are long fin-like leaves of great tenuity, reaching much beyond the medium-sized 

 telson." 



In this Beport four of the seven joints of the upper antennae are regarded as belonging 

 to the flagellum. 



Eupronoe inscripta, n. sp. (PI. CLXXX VII.). 



This species has many points of resemblance with Eupronoe maculata, Claus, but 

 instead of being very strongly flecked like that species, it has but few flecks, and on the 

 other hand the first three pleon-segments are very strongly printed with numerous 

 transverse lines ; they have their postero-lateral angles not rounded but more or less acute ; 

 the first joint of the mandibular palp is broader, straighter, and less elongate, than that 

 represented in Claus' figure; the third joint in the fourth perseopods has a more produced 

 front apex, and the first joint of the fifth peraeopods has a breadth more than half the 

 length instead of considerably less than half. 



Head longer than deep, narrowed in front ; first two segments of the pleon together 

 as long as the whole of the pereeon ; the after part of the pleon broad and flat. 



Eyes. — The upper and lower groups of ocelli closely combined. 



Upper Aitfennae. — The first joint of the peduncle much broader than long, the two 

 following joints incompletely developed, the third overlapped by the second ; first joint 

 of the flagellum very large, but not broader at the base than the first joint of the 

 peduncle, the lower margin very long and convex with a great brush of long filaments, 

 the rounded apex produced as far as the end of the second joint, the upper margin 



