Ko.1654. IMPBIPODA FROM WBBT VORTR iMRRICA HOLMES. KQK 



projection which is separated IV the epistome by a narrow fissure. 



Mandibles rather narrow : palp Blender and situated uear the middle 

 of the mandible; cutting edge rather narrow and edentate; molar 

 small and situated nearer the distal end than the palp. First maxilla? 

 with the inner plate devoid of terminal seta;; pulp two jointed, bent 

 around the outer plate, the second joint crenulate to minutelj dentate 

 around the distal end. Plates of second maxilla? narrow, setose dis- 

 tally. Maxillipeds with the inner plate narrow, devoid of spines, 

 and reaching the middle of the outer plate: outer plate devoid of 

 spin.-, crenulate to minutely dentate on the margin; palp slender; 

 dactyl spiniform. Firsl gnathopods simple; second subchelate, to 

 chelate. Perseopods rather slender, the basal joints <d' the lasl three 

 pairs widely expanded. Gills with plates on both sides. (Jropods 

 with styliform rami, the last pair -mailer than the others, with the 

 rami subequal. Telson short, entire. 



Type of genus. — .1. oculata, new species. 



This genus is allied to Lysiaru //<>. In it differs in the absence of seta? 

 on the inner ramus of the first maxilhe and in the simple first 

 gnathopods. 



ARUGA OCULATA, new species. 



Eyes large, oblong. Lateral angles of tie' head produced into an 

 acute triangular lobe. First antenna? with the second joint of the 

 peduncle nearly a- lone- as wide: third very short; first joint of 

 flagellum elongated; secondary fiagellum with about five joint-. 

 Second antenna' about a- long as the first, last two joint- of peduncle 

 of nearly equal Length. Outer plate of maxillipeds devoid of seta? 

 and reaching end of second joint of palp. First gnathopods rather 

 stout: side plate large and expanded below. Second gnathopods 

 with very narrow basal joint: hand -mall, with the lower posterior 

 angle produced so as to make it almost chelate. First and second 

 peneopod- with the merus widened and produced into an acute lobe 

 at the lower anterior angle. Third perreopods short, the basal joint 

 as wide a- deep; merus dilated and produced at the infero posterior 

 angle. Fourth and fifth perseopods more elongate, the broad basal 

 joint- serrated behind; merus slightly dilated in the fourth and not 

 unusually SO in the fifth; dactyl- rather narrow and smooth. Third 



abdominal segment with a sinus above the not very prominent lateral 

 angle. Fourth segment with a dorsal depression near the base. 

 [Jropods reaching hack- to about the same point ; peduncles armed 



above with spines which are well developed in the first and second 

 pairs hut small in the third. Kami of fir-t pair subequal, styliform, 

 shorter than the peduncle, and armed with few -pine-: in the second 

 paii- the rami are subequal and much longer than the peduncle; the 

 outer ramus is styliform and evenly tapering hut the inner 



