BRACHYURA AND MACRURA 279 



Not before taken at the Galapagos. Known from Oregon to Gulf 

 of California; Japan; Hawaiian Islands (Randall), doubtfully correct. 



Pachygrapsus transversus Gibbes. 



Tagus Cove, Albemarle Island, on reef north of Tagus Hill, March 

 16, 3 males. 



Taken previously at the Galapagos; found also throughout the 



tropics. 



Family PILUMNIDiE. 



PLATYPODIA GEMMATA sp. nov. 



(PI. XII, figs. 5 and 6.) 



Anterior two thirds of the carapace divided into about twenty lobules, 

 for the most part circular, except the mesogastric lobule ; covered with 

 crowded depressed granules and separated from each other by depres- 

 sions, filled with a dense furry coating. The front has a thin bilobed 

 edge, the lobes slightly sinuous. The antero-lateral margin is thin and 

 covered above by a short fringe of fur ; below, there are three fissures 

 visible, dividing the margin obscurely into four lobes. The postero- 

 lateral borders are short and deeply cut. 



The upper border of the merus, carpus and propodus of the cheli- 

 peds and ambulatory legs is sharply cristate. The chelipeds are gran- 

 ulated on the outer surface, the granules larger than on the carapace 

 and arranged on the lower half of the hand in four longitudinal rows. 

 The ambulatory legs are partially granulate. 



Dimensions.— Ovi^erons female, length 6.8 mm, width 9.6, fronto- 

 orbital width 4.9, width of front .2.8. 



Type Locality. — On reef north of Tagus Cove, Albemarle Island, 

 March 16; i male, i ovigerous female, 2 immature females (U. S. 

 Nat. Museum Cat. No. 24850) . 



LEPTODIUS SNODGRASSI sp. nov. 

 (PI. XII, figs. 7 and S.) 

 Carapace moderately convex and deeply areolated in its anterior 

 two thirds, flat and smooth in its posterior third. Behind each lobe 

 of the frontal margin a small lobule ; behind each of these a larger 

 and very prominent rectangular lobule ; still further back a transverse 

 line of four high gastric lobules, the outer pair about one and a half 

 times as wide as the inner ; and behind these a granulated line extend- 

 ing nearly across each protogastric lobe. A transverse line of gran- 

 ules, interrupted at the middle, across the widest part of the meso- 

 gastric region. The lateral portions of the carapace have each four 



