374 THE GENUS PANOPEUS — BENEDICT AND RATHBUN. 



In the male abdomeu tbe third, fourth, aud fifth normal segments are 

 anchylosed, but between these segments on each side there is a short 

 deep groove, making a superficial division (PI. xxiv, fig. 18). Third 

 normal segment nearly as wide as the first, its sides very much rounded, 

 while the sides of the fourth and fifth normal segments are concave. 

 Seventh segment of the sternum much exposed, cutting off the coxa^ of 

 the fiftli pair of feet from contact with the third abdominal segment, 

 and the male verges pass through a closed, or in some specimens a 

 nearly closed, canal. 



Meros of the chelipeds short and deep. On its ujjper margin is a 

 short tooth pointing forwards; behind this tooth the margin is ordi- 

 narily straight for some distance, this straight part ending sometimes 

 in an obtuse angle, sometimes in a small tooth. Carpal groove deep. 

 Tooth at the inner angle of the carpus subcylindrical aud obtuse. In 

 most specimens there is also a tiattened tubercle on the carpus in aline 

 with the superior margin of the hand. Large hand smooth, deep and 

 swollen; fingers conspicuously gaping, with a prominent cylindrical 

 tooth near the base of the dactyl; also a tooth on the hand at the base 

 of the dactyl. Fingers of each hand strongly hooked at the tips. The 

 color of the fingers varies from black to dark brown, does not extend 

 up on the hand, and is lighter at the tips. Ambulatory feet slender, 

 dactyls long and hairy. 



Length of carapace in large specimen, 19.5 millimetres; width, 28 

 millimetres. 



RECORD OF SPECIMENS EXAMINED. 



Viueyard Souud, Massachusetts (15639). 



Buzzard's Bay, 8 fathoms (15638). 



Narragansett Bay, Rhode Island, 12^ fathoms (5769). 



Long Ishnid Souud on oyster grounds; U. S. Fish Commission, 1890: Off- Milford, 

 Stratford, liridgeport, aud Norwalk, Counecticut. 



Hampton Roads, Virginia. 11 to 12 fathoms (15641). 



Fort Macon, North Caroliua (Yale Uuiv. Mus.). 



Soutli Carolina; U. S. Fisli Commission, 1890-1891: Near Port Royal (15728) ; one 

 mile inside of May River (15732); west end of Skull Creek (1.5739); mouth of Bull 

 Creek (15723); Calibogue Sound (15774). 



Florida: Marco (15642) ; Puuta Rassa (15643) ; Chadotte Harbor (15644); Sarasota 

 Bay (15645). 



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



From the last-named locality there is but a single small specimen 

 with claws detached, whiih api)arentl3' belongs to this species. 



19. Panopeus hemphillii, sp. nov. 

 (Plate XXIV, figs. 12 and 13.) 



Carapace somewhat hexagonal, widest at its third antero-lateral 

 teeth. Areolations fairly well marked. On each of the frontal lobes 

 there is a patch of granules. From the base of the depression between 

 the second and third antero-lateral teeth there is a broken line of 



