62 REPORT OF COMMISSIONERS OF INLAND FISHERIES. 



maxillipeds do not usually overlap the epistome. It includes the 

 genus Pan opens, the mud crabs, all of which are comparatively small. 

 These will be discussed under the generic divisions as given by 

 Rathbun (1900). Four genera are found in Narragansett Bay. 

 These are Eurypanopeus, Neapanope, Eupano- 

 pens, and Hexapanopeus, with one species under each. 

 The two first mentioned are the most common. (As these species 

 are quite similar one should use "The Genus Panopeus," hy J as. E. 

 Benedict and Mary J. Rathbun, Proc. U. S. Nat. Mus., Vol. XIV, pp. 

 355 to 385, in a critical study.) 



(Genus) EURYPANOPEUS A. Milne Edwards. 



Eurypanopeus depressus Smith. " Mud Crab. '^ 



Plate I. Figure 3. 



Panopeus depressus Smith. Verrill and Smith, 1874. 



Panopeus depressus Smith. Benedict and Rathbun, 1891. 



E . depressus is distinguished from all the others by the 

 flattened carapace which has transverse granulate ridges, the promi- 

 nent, semispooned fingers of the small hand, and the black or dark 

 brown color of the fingers running back on the hand far behind the 

 gape of the claw. The terminal segment of the abdomen is rounded. 



Habitat: under stones on muddy and sandy shores. 



Distribution: Cape Cod to the Gulf of Mexico. 



Economic value: food for fishes. 



Season in Rhode Island. 



When are the eggs laid, and how long after copulation? 



How long does the female carry the eggs? 



Extent of hatching season: 



LARVAL FORMS. 



EurjT)anopeus depresus Smith, 



From Birge, 1883. 



