NO. 8 HAIG: THE ATLANTIC GALATHEIDEA 11 



groups, as in P. serratus, but are more or less evenly distributed ; the 

 granules in the middle of the carpus are not depressed ; the outer side of 

 the manus of both chelipeds is rounded, without any trace of a crest ; the 

 movable dactyl of the major cheliped has a large projecting tooth at the 

 proximal end of the cutting edge, which is lacking in F. serratus; the 

 merus of the outer maxillipeds is smooth or faintly punctate, whereas it 

 is lightly rugose in P. serratus ; and the walking legs are much less hairy 

 than in P. serratus. 



The species is named for Dr. Fenner A. Chace, Jr. 



Pachycheles pilosus (Milne Edwards) 



Porcellana pilosa Milne Edwards, 1837, p. 255 (type locality, vicinity 



of Charleston, South Carolina). White, 1847, p. 64. Stimpson, 



1858, p. 228. Kingsley, 1880, p. 406. Benedict, 1901, p. 137, pi. 



3, fig. 11. A. Milne Edwards and Bouvier, 1923, p. 294. 



Wachycheles panamensis Ortmann, 1897, p. 293. Rankin, 1898, p. 237. 



Not P. panamensis Faxon. 

 Pachycheles pilosus Schmitt, 1924a, p. 76; 1924b, p. 90; 1935, pp. 183, 

 184 ; 1936, p. 375. Monod, 1939, p. 559. 

 Previous records. — 

 South Carolina, vicinity of Charleston: (Milne Edwards). Florida, 

 Sarasota Bay and Key West: H. E. Webster (Kingsley). West Indies: 

 Scrivener (White). ? Bahamas: (Ortmann); Salt Cay: Northrop 

 (Rankin). Puerto Rico: Fish Hawk (Benedict); Punta Ballena and 

 Guayanilla Harbor: Sci. Surv. Porto Rico and Virgin Ids. (Schmitt, 

 1935). St. Thomas: (A. Milne Edwards and Bouvier). Guadaloupe: 

 R. Lami (Monod). Barbados: Univ. Iowa Barbados-Antigua Exped. 

 (Schmitt, 1924b). Aruba: P. Hummelinck (Schmitt, 1936). Curagao: 

 C. J. van der Horst (Schmitt, 1942a). Bonaire: P. Hummelinck 

 (Schmitt, 1936). 



Material examined. — 

 A16-39. Punt Basora, Aruba ; Apr 10, 1939 ; shore. l?ov. 

 A41-39. Buccoo Reef, Tobago Island ; Apr 20, 1939 ; shore. 7 d , 6?ov. 

 Measurements. — Males, 4.8 to 7.1 mm; ovigerous females, 4.9 to 



7.2 mm. 



Remarks. — Pachycheles pilosus has been taken in corals. It is known 

 to a depth of 4 fathoms (Schmitt, 1935). 



Specimens from the Bahamas identified by Ortmann (1897) as 

 Pachycheles panamensis Faxon should probably be referred to P. pilosus, 

 the only western north Atlantic form that resembles Faxon's species. 

 Aside from Ortmann's record (based on the same specimens as Rankin, 

 1898), P. panamensis has been reported only from the Pacific coast. 



