324 A. E. Verrill — Decapod Crustacea of Bermuda. 



toms of vessels far from its usual habitats. In this way its range 

 may have been greatly extended by commerce in modern times. 

 Adult living specimens were taken at Provincetown, Mass., in 1879. 

 They occurred among barnacles, etc., on the bottom of a whaling 

 vessel returned from a cruise in the Gulf Stream region and were 

 associated with other southern species. (See S. I. Smith, 1884.) 



It ranges from Florida and Bermuda to southern Brazil ; from 

 Peru to the Gulf of California ; West Africa at Loanda, etc. Cape 

 Verde Islands and Madeira ; East Indies ; Australia ; New Zealand ; 

 Tahiti ; Galapagos Is.; Pernambuco, etc. ; Brazil, on stone reefs, and 

 Maceio on coral reefs (M. J. Rathbun); Rio (Heller); Australia 

 (Miers). 



Pachygrapsus gracilis (Satissure) Stimp. 



Metopograpsus gracilis Saussiire, Mem. Soc. Phys. Hist. Nat. Geneva, xiv, p. 



443, pi. II, f. 15, 15a, 1858. 



Pachygrapsus gracilis Stimpson, Ann. Lye. Nat. Hist. N. York, x, p. 113, 1871. 



Kingsley, Proc. Boston Soc. Nat. Hist., xx, p. 159, 1870 (descr.). Synop. 



Grapsidae, Proc. Acad. Nat. Sci., Philad. for 1880, p. 200 (syn. and descr.) 



M. J. Rathbun, Brauner-Agassiz Exp., p. 137, 1900 ; Bracli. and Macr. of 



Porto Rico, p. 17, 1901. 



Figures 6, 6a. Plate XII, Figure 2. 

 This is usually smaller than the preceding, and is much less com- 

 mon. Its colors are similar, but the reticulations and mottlings are 

 darker brown. It can best be distinguished by the more prominent, 

 thin, and nearly straight, front ; the straighter sides of the carapace. 



Figure 6. — Pachygrajjsus gracilis, carapace enlarged; 6a, one of the chelae. 

 After Saussure. 



which is not plicated over the cardiac region ; and by the chelae, 

 which have small denticles on the upper side of the carinate manus, 

 and on the dactylus. The manus has fine oblique ridges above, and 

 the carpus is covered with fine oblique and irregular ridges. 



It appears to be rare at Bermuda, or at least is seldom taken there. 

 A few good specimens were found at Bermuda by us in 1898 and 

 April, 1901 ; one of the latter carried eggs. A specimen was also 

 obtained by Mr. Goode, 1876. It has been found at the Florida 



