356 BULLETIN 152, UNITED STATES NATIONAL MUSEUM 



Eupanopeus harltii Rathbun, Bull. Lab. Nat. Hist. State Univ. Iowa, vol. 4, 



1898, p. 273. 

 Hexapanopeus hirsutus Boone, Bull. Bingham Ocean. Coll., vol. 1, art. 2, 1927,, 



p. 27, fig. 7. 



Diagnosis. — Carapace deeply areolated, granulation prominent. 

 Front deflexed, hairy; outer lobes well developed. Antero-lateral 

 teeth very thick, sinuses wide. Carpus uncommonly rough, with 

 reticulating ridges. 



Description. — Carapace more deeply areolated than in any other 

 species of Panopeus; the cervical suture is especially deep and next, 

 the division of the branchial region into anterior, middle and posterior 

 subdivisions and the division of the gastric region into three. Bead 

 granules of different sizes form a pattern on the anterior two-thirds 

 but diminish in size and prominence posteriorly. Front bent down, 

 hairy, edge thin, four-lobed, median notch open, narrow, middle lobes 

 separately arched, outer teeth bluntly dentiform. Inner orbital teeth 

 triangular, directed forward or slightly outward ; middle lobe between 

 fissures arched slightly forward. First and second lateral teeth small, 

 tuberculiform, subequal, separated by a triangular sinus; third, fourth 

 and fifth teeth diminishing in the order named, vertically thick, 

 widely separated, tips tuberculiform. Under side of carapace covered 

 with coarse granules, subhepatic tubercle subcorneal, acute. 



Dorsal aspect of chelipeds roughly granulate; carpus rugate, the 

 rugae tending to form a more or less reticulated pattern, distal groove 

 very deep, inner tooth short, stout, blunt; manus with well marked 

 superior furrow, outside which the granules form in short, parallel, 

 vertical rugae on the upper, but not on the true outer surface, this 

 last being smooth to the naked eye, but granulate toward proximal 

 end; fingers long and narrow, normally with a large basal prehensile 

 tooth on the major dactyl, though in two large males it is undeveloped 

 and the palm and fingers resemble in shape those of the minor chela; 

 immovable finger bent down, its color not continued on palm. Legs 

 long and slender. Sixth segment of male abdomen shorter than 

 broad, especially at middle. 



Color. — Alcoholic specimens are light olive brown above and on 

 the chelipeds; fingers black, lighter at tips (Smith). 



Measurements. — Male type, length of carapace 15, width of same 

 22.5 mm. (Smith). Male (16259), length of carapace 10.7, width of 

 same 15.7, fronto-orbital width 10.2, width of front 4.4 mm. 



Relation. — In shape of carapace, P. harttii resembles P. herbstii 

 forma simpsoni and P. occidentalis forma serrata; it differs from both 

 in a more areolated carapace, which suggests a Leptodius, bent down 

 front, more distinct outer lobe of front, narrower fourth and fifth 

 lateral teeth, rougher carpus of cheliped; it differs from P. herbstii 

 forma simpsoni in the color of immovable finger not continued on 

 palm, the absence of coarse tubular hairs and groove on the carpus. 



