''°i89i!'''] PROCEEDINGS OF THE NATIONAL MUSEUM. 3(37 



roiiuded aud long. Anterior edge of second tooth straight, the point 

 hooked forward, posterior edge rounding. Anterior edge of third tooth 

 curved forward to a point. Posterior edge long aud not so much rounded 

 as that of the second tooth. Last tooth small, sharp, point projecting 

 forward. In general appearance the autero-lateral teeth are much like 

 those of depressus, but cut much deeper and more strongly hooked lor- 

 ward. 



External hiatus of orbit a deep-cut triangular notch. Subhepatic 

 and subbranchial regions closely set with flattened depressed granules. 

 As in depressus^ the subhepatic tubercle is wanting. 



Sides of second segment of male abdomen concave. Coxce of fifth 

 pair of feet broadly in contact with third segment of abdomen. Third 

 segment entirely free, its sides nearly straight. Fourth and fifth nor- 

 mal segments anchylosed, their sides concave, the fourth broadest at 

 its proximal end. Penultimate segment short, its sides slightly concave. 

 Terminal segment rounded. 



Chelipeds very unequal. Carpus of the larger cheliped finely gran- 

 ulated on its inner and upper portions, slightly rugose on its outer 

 portion. Carpus of the smaller cheliped more coarsely rugose and 

 granulate than that of the larger. Carpal tooth very sharp, shaped 

 like that of depressus. Larger manus minutely granulate, swollen, 

 deep. Fingers very short, gaping, unarmed. Smaller hand coarsely 

 granulated, with one or two longitudinal lines on the exterior surface, 

 and with a double crest above, the intervening sulcus deeper than 

 usual in the genus. A line of granules extends along the upper margin 

 of the movable finger nearly to the tii). Fingers partially spoon- 

 shaped, as in ^?<?2)ress«s; impressed lines deep. Ambulatory feet like 

 those of de^rr ess us, except that they are set with thinly scattered hairs. 



Notwithstanding the fact that, in the twenty males examined, the 

 abdomen has six segments, we place this species in the genus Panopeus, 

 as it has the character of the external hiatus of the orbit, the teeth of. 

 the an tero- lateral margin are those of Panopeus, the appendages of the 

 male abdomen are characteristic of many species of the genus and not 

 very unlike those of depressus. The whole make-up is so closely like 

 that of deprtssus that it takes a second look to distinguish it. 



Length of carapace in large specimen, 12 millimetres j width, 17 mil- 

 limetres. 



RECORD OF SPECIMENS EXAMINED. 



Trinidad ; U. S. Fish Commissiou, 1884 (15640). 



Vigia, Brazil ; Derby and Powers, Hartt Explorations, 1870 (Yale Univ. Mus.) 



10. Panopeus transversus Stimpsou, 



(Plate XXII, fig. 2; plate xxiv, fig. 9.) 



Panopeus travsveraus. W. Stinipson, Ann. Lye. Nat. Hist., vii, p. "210, 1860. S. I. 



Smith, Proc. Boston Soc. Nat. Hist., xii, p, 282, 1869; Trans. Conn. Acad., il, p. 



4, 1869 ; Ann. Kept. Peabody Acad. Sci., 3, p. 89, 1870. 

 Eurypanopeus transversus. A. Milne Edwards, Miss. Sci. au Mexique, pt. 5, i, p. 



319, pi. Lix, fig. 1, 1880. 



