54 



CBABS OF THE FAMILY INACHIDJS—M. J. BATHBVN. vol. xvit. |> 



Measurements. — Length (of male), 6.5; width at branchial regions, 4.5; 

 width at hepatic regions, 3.6 mm. 



Locality.— L'A,t. 29° 30' :K., long. 112o 40' W., 45 fathoms; Lieut. 

 Comdr. H. E. Nichols, U. S. N. ; 2 males, 2 immature females (18104). 



BATRACHONOTUS FRAGOSUS, Stimpson. 



Batrachonotiis fragosus, Stimpsox, Bull. Mns. Comp. Zool., ii, p. 122, 1870. — A. 

 Milxk-Edwards, op. cU., p. 180, 1879. 



Stimpson's description was made from a single si>ecimen. The basal 

 joint proves to have a terminal spine. Tlie four ])rotuberances of the 

 carapace and also the first abdominal segment are each terminated by 

 a spine in the males, and there are two large tubercles just above tlie 

 posterior margin. In the females, of which there are two of smaller 

 size than the males, but bearing eggs, the cardiac prominence is con- 

 spicuously rounded, granulous, without a s^^ine; the first ambulatory 

 leg is but very little longer than the second and about one and a half 

 times the length of tlie carapace, while in the male it is more than twice 

 as long as the carapace. 



Measurements. — Lengtli (of male), 7.8; width, 7. Lengtli (of female), 

 5.3; width, 4.2 mm. 



This species was collected by the Albatross at two stations in the 

 Gulf of Mexico, as follows: 



BATRACHONOTIIS BRA8ILIENSIS, new species. 



This species is unfortunately represented by a single female specimen 

 with only three ambulatory legs present and those detached. The spec- 

 imen resembles much the female of B.fragosus; the depressions of the 

 carapace are more shallow; the raised portions are covered with gran- 

 ules, but are without spines. The i)ostocular spine is very small, as in 

 B.fragosus, and the hei)afic region jirojects well beyond it, aud has an 

 acute marginal tubercle. The rostral teeth are short and rounded, not 

 extending beyond the autennular fossa^, and separated by a rounded 

 sinus as wide as each lobe. The inferior surface of the carapace and 

 the abdomen are set with tubercles. The three ambulatory legs are 

 very nearly the same length, less than one and a half times the length 

 of the carapace; dactyli long and slender, as in the preceding species. 



Measurements. — Length, 7 mm.; width, 6. 



Locality. — Dredged oft' Rio Janeiro by Mr. Eichard Rathbnn during 

 the Hartt explorations in 1875-'77 ; 1 female with eggs. 



