THE BRACHYURA AND MACRURA OF PORTO RICO. 
11 
Speocarcinus carolinensis Stimpson. 
Speocarcinus carolinensis Stimpson, Ann. Lyc. Nat. Hist. N. Y., vii, 59, pi. I, figs. 1, 2, and 3, 1859; Rathbun, Bull. Lab. Nat. 
Hist. State Univ. Iowa, iv, 281, 1898. 
Carapace punctate, obsoletely granulated toward margins. Gastric region well defined. Antero- 
lateral region 5-toothed, including angle of orbit; second tooth shallow, rounded, and not distinctly 
separated from first. Third, fourth, and fifth teeth well marked, sharp, separated by clearly marked 
U-shaped sinuses. Front about one-third width of carapace, with a median notch; the two lobes 
slightly oblique and sinuous. Merus of chelipeds with a strong tooth above near distal end; carpus 
with a blunt tooth at inner angle; hand 
smooth, punctate. Dactylus of last pair 
of ambulatory legs curved upward. Sur- 
face pubescent except that of the fingers. 
Lines of hairs on the hands and fingers 
and the margins of the ambulatory legs. 
Male, station 6074; Length, 6.5 mm. ; 
width, 8.5; width between outer angles, 6; 
width of front, 3. Female, station 6074; 
Length, 7.5; width, 9.8; width between 
outer orbital angles, 6.5; width of front, 
3.2 mm. 
Charleston Harbor, S. C. (type lo- 
cality), in subterranean galleries excavated in mud at low-water mark by other crustaceans or by large 
worms. Tortugas, dredged. Mayaguez Harbor, Porto Rico, 12 to 18 fathoms, station 6061, and in 75 
to 76 fathoms, station 6063; off Puerto Real, 8| fathoms, station 6074. 
The Porto Rican specimens are wider than the type, which was measured by Stimpson and is 
not extant, their lateral teeth are more distinctly separated, and the second tooth more prominent 
than in Stimpson’s figure. The specimen from Tortugas which I referred to S. carolinensis in 1898, 
though smaller than the type, has the same proportions and similar teeth. There is, however, in 
the Museum of Comparative Zoology, a male from Charleston, X. C., the type locality, which is about 
the same size as the type specimen, but its proportionate width is intermediate between the type 
and the Porto Rican specimens, while the teeth are prominent and well separated, as in the latter. 
Genus EUCRATOPSIS Smith. 
Eucratopsis Smith, Trans. Conn. Acad. Sci., u, 35, 18C9. 
Carapace convex in an antero-posterio’r and a transverse direction, narrowing considerably 
posteriorly, antero-lateral margins with large teeth. Front less than half the width of carapace. 
Orbits and maxillipeds similar to those of Speocarcinus. Third abdominal segment not in contact with 
coxae of fifth pair of feet in typical species; third, fourth, and fifth segments coalesced. Chelipeds 
short, thick; palm angular, with a distinct superior marginal line; fingers elongate. 
Eucratopsis spinidentata (Benedict). 
Eucratoplax spinidentata Benedict, Johns Hopkins Univ. Cir., xi, No. 97, p. 77, 1892; Iiathbun, Ann. Inst. Jamaica, I, 26, 1897. 
Eucratopsis spinidentata Rathbun, Bull. Lab. Nat. Hist. State Univ. Iowa, iv, 281, 1898. 
Carapace finely granulate and pubescent. Regions distinctly marked. Front less than one-third 
the width of carapace, bilobed, lobes slightly rounded. Orbit slightly wider than frontal lobe. 
Lateral teeth five, including orbital; the second shallow and separated from the first by only a slight 
sinus; third rounded, obtuse, and little projecting; fourth and fifth prominent, spiniform. Merus of 
chelipeds with a superior tooth near distal end; carpus with two spiniform teeth, one at inner angle, 
the other below. Palm smooth on outer face, granulate above; fingers slightly bent down in the 
larger cheliped, more so in the smaller cheliped. Teeth of fingers irregular; when closed the fingers 
leave a slight gape proximallv. Ambulatory legs pubescent and with hairy margins. Dactyli of last 
pair slightly recurved and bent upward. 
Length of male from Boqueron Bay, 11 mm.; width between penultimate marginal teeth, 15.5 
mm.; width between outer orbital angles, 9.8 mm.; width of front, 4.8 mm. 
Jamaica (Benedict, Rathbun); Trinidad; Monos Island, off Trinidad; Puerto Real and Boqueron 
Bay, Porto Rico. 
