THE CANCROID CRABS OF AMERICA 



477 







— au 





\ Cm 





■o Pq !Zp d-c«« 



1S.2-H 



mco "3 — < c-i cs 



50m n 5 — iM r- 



a jf « 



.^ Eh 



XlK ' 



I-^IS 





burrows extend obliquely for a dis- 

 tance of 12 to 20 inches and are about 

 6 inches in diameter. (Hay.) 



Economic value. — Used extensively 

 for food. 



Range. — North Carolina to Mexico. 



Material examined. — See table, pages 

 475-476. 



MENIPPE FRONTAUS A. Milne Edwards 



Plates 194-196 



Menippe frontalis A. Milne Edwards, Crust. 

 R6g. Mex., 1879, p. 264, pi. 48, fig. 2 

 (type-localities, Panama (figured spec- 

 imen) and Ecuador; types in British 

 Museum). — Nobili, Boll. Mus. Torino, 

 vol. 16, no. 415, 1902, p. 33 (Bay of 

 Santa Elena, Ecuador). 



Diagnosis. — Carapace uneven but 

 not lumpy. Second lateral lobe bilo- 

 bate. Three lobes on inferior orbital 

 margin. A stridulating organ on 

 inner surface of palm. 



Description. — Punctae of surface 

 very numerous and both large and 

 small. Gastric, cardiac, and intestinal 

 regions and anterior part of mesogastric 

 subregion deeply outHned; epigastric 

 subregion elevated. Anterior portion 

 of carapace unevenly pitted. Frontal 

 lobes deeply and widely separated, the 

 emargination succeeded by a deep fur- 

 row; each submedian lobe is followed 

 by two small lobules, forming an ob- 

 Hque line with the small, retreating, 

 thickened, obtusangled, inner tooth of 

 tlie orbit. A tubercle on either side of 

 the dorsal surface of the front, opposite 

 the last or posterior of the two marginal 

 lobules. Outer and lower teeth or 

 lobes of orbit sloping well away from 

 the cavity containing the eye, the 

 outer tooth low, with tubercuHform tip, 

 the tooth beneath it broader and a 

 little more advanced; median sub- 

 orbital tooth low, inner tooth somewhat 



