402 CRUSTACEA. 



II. Anomoura Cancridica. 

 1. Bellidea. 



III. Anomoura Corystidica. 



1. HlPPIDEA. 



IV. Anomoura Grapsidica. 



1. PORCELLANIDEA. — Superiora. 



2. GALATHEIDEA. — Inferiora or Macrourica. 



V. Anomoura Leucosidica. 



1. Eaninidea. 



The Corystoid Crustacea are properly degraded forms below the 

 Cancroidea, and hence it is that the section A. Cancridica contains 

 but a single group. 



The ^Egleidea are closely related in the sutures of the carapax to 

 the Paguri, as is shown beyond; in their penicillate branchiae, thev 

 look toward the Astacoid Macroura. 



Section I. ANOMOURA SUPERIORA. 

 Subtribe I. DROMIDEA. 

 The known genera of living Dromidea, are as follows : 



1. Antennas internee fossis instructs^ 



G. 1. DYNOMENE, Latr.— Frons parce triangulatus, oculis approximatis. Pedes 



brevibus ; 5ti abbreviati tantum, subdorsales. 

 a. 2. Dromia, Fair.— Carapax suborbiculatus, fronte subtriangulato, angusto 



oculis approximatis. Pedes crassi, breves; 4ti 5tique abbreviati, subdorsales. 



