78 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
pubescent. Chelipeds of full-grown male from 1.5 to nearly 2 times as long as carapace; palms 
longer and narrower (3 times as long as wide); arm more cylindrical, less angled and nearly smooth; 
wrist nearly smooth. Carpal joints of ambulatory legs longer and slenderer with a shallow groove 
on outer surface. Appendages of abdomen of male with the distal third of a light brown color, gradually 
tapering and arranged in form of a lyre, widely spreading at tips. 
Dimensions of male: Length, 30.5 mm.; width, 29 mm. ; width 'across orbits, 16.2 mm. 
From Florida to United States of Colombia and Guadeloupe. Culebra. 
Pitho lherminieri (Schramm). 
Othonia lherminieri Schramm, Crust. Guadeloupe, 20, 1S67; A. Milne Edwards, Crust. Reg. Mex., 116, pi. xxiv, f. 5, 1875. 
(Not 0. lherminieri Rathbun, 1892, ) 
Othonia carolinensis Rathbun, Proc. U. S. Nat. Mus., xv, 256, pi. xxxv, .igs. 1 and ' 2 , 1892. 
Pitho lherminieri Rathbun, Ann. Inst. Jamaica, I, 8, 1897. 
Carapace rough with tubercles of different sizes, as broad as long in the adult male, longer than 
broad in other forms, very narrow behind in males, much wider in females. Fronto-orbital width 
about half the entire width in adults, wider in the young. Frontal teeth slightly more advanced than 
orbital angles. Second and third lateral teeth subequal; fourth and fifth much reduced. Second joint 
of antenna similar to that of P. anisodon, but wider. 
Chelipeds similar to those of P. ac.ule.ata. Appendages of abdomen of male in contact at about 
three-fifths the distance from distal end, then separating slightly in faint curves concave to each other, 
and again converging before they finally spread out at tips; distal three-fifths yellow, very slender, 
tapering gradually to a fine point. 
Dimensions of male: Length, 25 mm.; width, 25 mm.; fronto-orbital width, 13 mm. 
Mayaguez Harbor, 97 to 120 fathoms, station 6067; off Vieques, 14 fathoms, station 6085. It is 
extremely doubtful if the specimen labeled “Station 6067” came from the depth indicated. 
The species ranges from Charleston, South Carolina, to Cape St. Roque, Brazil, in from 1 to 20 
fathoms. 
Pitho mirabilis (Herbst). 
Cancer mirabilis Herbst, Natur. Krabben u. ICrebse, ii, 152, pi. xxxvii, f. 3, 1791. 
Othonia rotunda Rathbun, Proc. U. S. Nat. Mus., xv, 258, pi. xxxvi, f. 1, 1892. 
Pitho mirabilis Rathbun, Bull. Lab. Nat. Hist. State Univ. Iowa, iv, 258, 1898. 
Carapace as broad as long, widest at fourth antero-lateral tooth, much swollen in both directions, 
transversely rising abruptly from bases of lateral teeth, longitudinally rising in almost an equal curve 
from behind the front and from posterior margin. Regions faintly indicated. Carapace covered with 
granules more thickly set on posterior half; long, fine hairs proceed front top of granules. Along the 
outer margins of the gastric lobes, bunches of granules beset with coarse hairs form a broad line which 
is continued to rostrum. Rostral teeth sharp, produced beyond orbital angles. Preorbital tooth obtuse, 
less produced than postorbital, which is subacute. Antero-lateral teeth usually five, acute, separated 
to their bases, the first the largest, the others as a rule decreasing in size to the last, the tips making a 
single curve. Anterior margins of teeth thickened. Antero-lateral margin marked by inconspicuous 
granules irregularly placed, giving the teeth the appearance of being themselves minutely dentate. 
Basal article of the antenna with a sharp, longitudinal groove through the middle; tooth at distal 
extremity slightly more produced than upper inner angle of orbit and visible in a dorsal view; outer 
lobe of second article directed forward; third article as broad as long. Abdomen and sternum minutely 
pubescent; abdominal appendages in male diverging slightly at distal ends, hooked at tips. 
Chelipeds in both sexes slender, longer than ambulatory legs, finely punctate, upper margin with 
thinly scattered hairs; arm angular, a few small tubercles on the upper margin; hand slightly tapering 
distally; fingers in male gaping for the proximal third, a tooth on dactyl; in the female, fingers evenly 
dentate and in contact for nearly their whole length, a slight gape at proximal end. Ambulatory 
legs very hairy above, first pair reaching to about middle of inarms. 
Length and width of female, 17.5 mm.; width of front, 9.8 mm. 
Key West; Bahama Banks. Puerto Real, Porto Rico. 
