38 SMITHSONIAN MISCEI^LANUOUS COLLECTIONS 



the carpus, and one at each joint of the ambulatory feet. The dimen- 

 sions of two specimens are as follows : Male, length of carapax, 2.3 ; 

 breadth, 3.1 ; female, length, 2.4; breadth, 3.2 inches. 



Found on coral reefs about low-water mark. Taken by us at Loo 

 Choo and at Tahiti. It has also been found at most of the coral 

 islands of the Pacific, among the East Indies, and in the Red Sea. 



Genus LIOMERA Dana 



This genus is here taken in a more extended sense than originally 

 intended by Dana, so as to include his genus Carpilodes and the 

 Xaiitho obtusus of De Haan. In our specimens of L. lata the fingers 

 show more tendency to excavation at the tip than in that described 

 by Dana, and are nearly the same as in Carpilodes tristis. In neither 

 of these species, however, is the spoon-shaped cavity as well defined 

 as in Chlorodius. This seems to point out the propriety of uniting 

 the two genera of Dana, which, according to the statement of the 

 author, differ only in the character of the fingers. In Liomera ob- 

 tusa, which is intermediate in character between the two above men- 

 tioned, the fingers are more excavate than in either, and in a new 

 species described below they are entirely acuminate. 



As in allied genera, the third, fourth, and fifth joints of the male 

 abdomen are united. 



48. LIOMERA LATA' Dana 



Lionicra lata Dana, U. S. Exploring Expedition. Crust., i, 161, pi. vii, 

 fig. 6. 



This species is remarkable for its great breadth, which exceeds 

 that of any other known crab. In our specimen the body is of a 

 light blue color, the feet light red, the fingers black. 



It was found at the Amakirrima Group, near Loo Choo, by Mr. 

 L. M. Squires, of the steamer "Hancock." 



49. LIOMERA OBTUSA " (De Haan) Stimpson 



Xantho obtusus De Haan, Fauna Japonica, Crust., p. 47, pi. xiii, fig. 5. 

 Liomera obtusa Stimpson, Proc. Acad. Nat. Sci. Phila., x, p. 32 [29], 1858. 



Carapax rather less broad than in other species of the genus ; pro- 

 portion of length to breadth, 1:1.63. Anterior margin arcuate; 

 posterior and postero-lateral sides straight, the former but little 



^Liomera cinctiniana (White). 



' Carpilodes venosus (Milne Edwards). 



