1895. ntocEEDixas of the national museum. 3')5 



granulate. Last two teetli very long, adding to the effect of width, and 

 making the anterolateral margin less arcuate. Lateral spine very 

 long, much longer than in C. saphluH of equal size, more than three 

 times the length of the preceding tooth. Abdomen as in the species. 

 Costiie of cheliped very prominent and strongly granulate. The gran- 

 ules of the inner margin of the merus extend upon the upper surface of 

 the distal half. There are two carpal spines, one at the outer angle and 

 a shorter one close to the propodal spine. 



Size. — Length to sinus, 49 mm. ; total length, 50.S; width, 121; length 

 of lateral spine, 10; of preceding tooth, 5. 



Type locality. — Santa Cruz, Brazil: Thayer expedition (Mus. Comp. 

 Zool.); 1 male. 



Two smaller males from Eio de Janeiro, Thayer expedition (Mus. 

 Comp. Zool., and No. 19083, ILS.N.M.), resemble the type. The frontal 

 and anterolateral teeth are less acuminate, but the areolations are as 

 strong and the lateral spine equally long. 



In Nicaragua Mr. Charles W. Richmond collected a series of speci- 

 mens which are intermediate between C.sapidus and typical C.sapidus 

 acutidens. In the largest specimen, a male (Plate XIY) from Escondido 

 Eiver, September 0, 1892 (No. 18G30, IT. S.N. M.), the proportion of the 

 carapace is as in typical C. siqridtis. The areolation and granulation of 

 the front are as in C. fnqmlus acutidens. The antero-lateral teeth are 

 \ery acuminate, but not so slender as in G. sapidus acutidens, and the 

 last two teeth are not so long. The lateral spine is less than three 

 times the length of the preceding tooth, and slopes backward. The 

 carpus has a spine close to that on the manus. The upper surface of 

 the manus has not the conspicuous granulation of typical C. sa2)idiis 

 ((cutidens, although granules can be seen with the lens. A lot of four 

 medium-sized specimens (1 male and 3 females, No. 18246, U. S.N. ^L) 

 were obtained at Greytown. In these the areolation and granulation 

 are as in No. 18630, the frontal and lateral teeth are less sharj), the 

 spine is much shorter, as in the young of typical C. 6'0^;ic/«s', and is 

 directed forward. In the Museum of Comparative Zoology there are 

 three males of medium size, without locality, which resemble those from 

 Greytown. 



Size of male (No. 18630, U.S.N.M.). — Length to sinus, 53.5 mm.; total 

 length, 56; width, 126; length of lateral spine, 14.3; of preceding 

 tooth, 5. 



Were the differences between the Brazilian and the Central American 

 forms to prove constant in a large series of specimens, it might be l)est 

 to call the latter by a different name. 



Besides the subspecies, the only specimen of C. sapidus from Brazil 

 that I have seen is a large and old male in the Museum of Comparative 

 Zoology, labeled "Eio Grande, Brazil; Capt. Harrington, June, 1861." 

 This specimen is very near the typical G. saj)idus, although the lateral 

 spine is directed backward and tlie frontal teeth are somewhat concave 

 on their outer side. 



