BORRADAILE— ON THE PONTONIIN^ 379 



2. Periclimenceus fimhriatus Borradaile, 1915 (Plate 55, fig. 19). 

 Ann. Mag. Nat. Hist. (8), xv. p. 213. 



Definition : Body rather stout, compressed ; rostrum outreached by antennulat 

 stalk, and rather more by antennal scale, straight, with convex upper and almost straight 

 lower edge, bearing above 4 — 7 subequal teeth, of which the first lies in front of the 

 eyes, and without teeth below ; strong antennal spine ; first joint of antennular stalk 

 moderately expanded, second shorter than third, outer flagellum fringed with long hairs ; 

 antennal scale of moderate length, with straight outer and convex inner sides, the latter 

 fringed with very long hairs, distal spine small ; third maxilliped with penultimate joint 

 considerably longer than last joint, last two joints together equal in length to rest of 

 limb, exopodite rather short, endopodite bearing a fringe of unusually long hairs ; first 

 leg outreaching antennal scale by hand and wrist, its wrist equal to arm, fingers equal 

 to palm, hand stout and hairy ; legs of second pair unequal, the larger, which may be 

 on either side, about as long as body, no spine on any joint, hand very large, granulated, 

 thick on the outer side and sharp edged on the inner, its fingers short, with a knob 

 on the fixed one fitting into a socket in the moveable one, the smaller hand much like 

 the larger but with simple fingers ; last three legs moderately stout, with a group of 

 long spines at the end of the propodites, and dactylopodites very short and stout and 

 bearing two long, hooked claws ; telson shorter than uropods, narrow, tapering, with 

 rounded end ; uropods fringed with very long hairs. 



Length of the longest specimen, 9 mm. 



Mulaku Atoll, Maldive Is. Providence I., to 50 fms. 



Genus Harpiliopsis n. gen. 



Definition : Body stout, depressed ; sixth abdominal segment not elongate ; rostrum 

 of moderate length, lanceolate, toothed above and below ; outer flagellum of antennule 

 not deeply cleft ; antennal scale broad ; mandible without palp ; second maxilliped 

 without podobranch, with last joint mediad of preceding ; third maxilliped with arthro- 

 branch, and with last two joints narrow, antepenultimate joint broad or narrow ; legs 

 stout, directed outwards, the last three with hooked dactylopodites. 



Key to the species of Harpiliopsis : 



I. Antepenultimate joint of third maxilliped narrow. 



H. depressus (Stimpson), 1860. 



II. Antepenultimate joint of third maxilliped broad. 



H. beaupresi (Audouin), 1825. 



1. (Type.) Harpiliopsis beaupresi (Audouin), 1825 (Plate 55, fig. 21). 



PalcBmon Beaupresii, Audouin, Descr. Egypte, Crust, p. 91 (1825). Savigny, Atlas, 

 Crust. PL 10, fig. 4. 



48—2 



