206 Mr. L. A. Borradaile — JS^otes on Carides. 



are greatly broadened ; (6) the telson with two pairs of spines 

 at the sides, and at the end an outer short and an inner longer 

 pair of spines, a submedian pair of slender feathered spines, 

 and a median pointed projection ; (7) a gill-formula com- 

 prising pleurobranchs for tlie legs, an arthrobranch for the 

 third niaxilliped, and in Hifmenocera tiie vestige of a pleuro- 

 branch for the latter limb, with epipodites on the maxillipeds 

 only. 



II. The PALiEMONIDJi. 



Tliere must be recognized in this family four subfamilies, 

 separated as follows : — 



I. Xoue of the bristles at the end of the larval telsou 



become in the adult transposed on to the anterior 

 part of that organ, which is therefore unarmed 

 on back and sides. The siuface of the molar 

 process of the mandible is closel}' ridg-ed. [There 

 is a pleurobranch for the third maxilliped.] .... Desmocaridince. 



II. Two pairs of the bristles at the end of the larval 



telson become in the adult transposed on to the 

 back of that organ. The surface of the molar 

 process of the mandible bears some half-dozen large 

 knobs or crests. 



A. The end of the telson bears six spines. [There is 



no pleurobranch to the third maxilliped.] .... Pontoniince. 



B. The end of the telson bears four spines. 



1. The side of the carapace is traversed by a 



suture. The outer flagellum of the anteuuule 

 is but slightly cleft. There is no pleuro- 

 branch to the third maxilliped Typhlocaridinee. 



2. The side of the carapace has no suture. The 



outer flagellum of the antennule is deeply 

 cleft. There is a pleurobranch to the third 

 maxilliped Talcemonince. 



III. Definitions of New Genera. 



1. Lysmatella (Hippoly tidae) . 



Related to Lysmata, but without mastigobranchs on the 

 legs. 



2. Phyllognathia (Gnathophyllidae). 



Ischium of third maxilliped narrow and movably sutured 

 to nierus. Mandible subcylindrical. Lacinise of raaxill?e 

 lost. Outer flagellum of antennule normal. Rostrum of a 

 irood leng-th. 



