372 THE GENUS PAXOPECS BENEDICT AND RATHBUN. 



Carpus and liaud coarsely aud densely granulate, rugose above. Car- 

 pal spine sharp, pointing forward. Fingers not gaping. Large tooth 

 at the base of the dactyl on the large hand, and a tooth on the hand at 

 the base of the dactyl. 



Length of carapace, 7 millimetres; width, 8 millimetres. 



16. Panopeiis harttii Smith. 

 (Plate XX, fig. 1; plate xxiv, fig. 5.) 



Fanopeus Harttii. S. I. Smith, Proc. Boston Soc. Nat. Hist., xii, p. 280, 1869: Trans. 

 Conn. Acad., ii, pp. 5, 34, pi. i, fig. 5, 1869 ; Amer. Jour. Sci. (2), 48, p. 339, 1869. 

 A. Milne Edwards, Miss. Sci. au Mexique, pt. 5, i, p. 314, 1880. 



Second segment of male abdomen broadest at its proximal end ; sides 

 deeply concave. Seventh segment of sternum well exposed. Coxa? of 

 fifth pair of feet in contact with third segment of abdomen. For a large 

 portion of its length the outline of the abdomen is nearly straight. 



Length of carapace in large specimen, 15 millimetres; width, 22 milli- 

 metres. 

 . A young female from St. Thomas is doubtfully referred to this species. 



RECORD OF SPECIMEX.S KX.\MINED. 



Florida: Indian Key; H. Hemphill (15647). 

 St. Thomas; Hartt Explorations, IttTO (Yale Univ. Mus.). 



Brazil; Hartt Explorations, 187.5-1876: Peruambuco; Rio Formosa, Pernambuco; 

 Plataforma, Bahia ; Abrolhos Islands. 



17. Paiiopeus V7urdemanmi Gibbes. 

 (Plate XXIV, figs. 6 and 7.) 



Fanopeus Wurdemannii. Lewis R. Gibbes, Proc. Amer. Assoc. Adv. Sci., 3, p. 176, 1850. 

 Joseph Leidy, Jour. Acad. Nat. Sci. Phila. (2), iii, p. 17, 1855. 



There is in the National Museum a specimen labeled •' Fanopeus Wur- 

 demannii." It agrees with Gibbes's description, the principal characters 

 of which are as follows : 



It most nearly resembles P. Rerbsiii. The anterior edge of the front is marked by 

 a groove whose borders are formed by finely granulated ridges. Tlie surface of sliell 

 also is marked by a few distinct transverse ridges; the finger aud thumb are white. 



We have found several other specimens which agree with the first, 

 aud still others which agree in everything but the white fingers. 



General appearance much like herbstii, but the coalesced tooth has 

 the sinus more shallow and the rounded posterior portion longer; no 

 conspicuous pubescence. 



A character common to all the specimens is a short second segment 

 of the male abdomen, exposing broadly the seventh segment of the 

 sternum. Froximal end of third abdominal segment but little produced 

 laterally; outline rounded. 



lu some specimens the condyle of the coxfe of the fifth pair of feet 



