282 RATHBUN 



lobes slightly convex except for a squarish tooth at the outer angle. 

 Antero-lateral border distinctly marked, almost limbed, and furnished 

 with four tuberculiform teeth besides the orbital which is small and 

 little prominent. First, second and third teeth subequal, fourth tooth 

 much smaller ; from it a crest extends obliquely inward and backward 

 on the carapace. 



Chelipeds nearly equal. Outer and upper surface of carpus, and 

 upper surface of manus nodulous. A granulated longitudinal ridge on 

 the outer surface of the manus. Pollex with two carinse, the lower of 

 which extends back on the palm. Dactylus with a deep superior fur- 

 row. The fingers of the larger cheliped when closed leave a small 

 hiatus at base ; those of the smaller cheliped either have a smaller 

 hiatus or fit tight together. Ambulatory legs sparsely hairy. 



Dimensions. — Male, length 2.4 mm., width 3. 



J^ocality. — Tagus Cove, Albemarle Island, on reef north of Tagus 

 Hill, March 16, 2 males (U. S. Nat. Museum Cat. No. 24832). 

 Eriphia granulosa A. Milne Edwards. 



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

 16, I male, 2 females, 3 young. 



Distribution. — Chile (type locality) ; Chatham Island, Galapagos 

 (Dr. W. H. Jones, U. S. N., collector). 

 Eriphides hispida (Stimpson). 



Tagus Cove, Albemarle Island, Feb. 8, i male. 



Previously taken at Albemarle Island by the Albatross ; also occurs 

 at Panama and west coast of Central America. 



Family PORTUNID.^. 

 Portunus (Achelous) angustus Rathbun. 



Tagus Cove, on reef north of Tagus Hill, March 16, 4 young. 

 Tagus Cove, 12 fathoms, i young. 



Type Locality. — Off Hood Island, Galapagos, 20 fathoms. 



PORTUNUS (ACHELOUS) STANFORDI sp. nov. 



(PI. XII, fig. n.) 



Carapace pubescent ; ridges very prominent ; those on the cardiac 

 region especially high ; two large tubercles at the inner angle of the 

 branchial region. Fronto-orbital width about three fifths of the width 

 of the carapace (exclusive of spines). Front prominent; eight teeth 

 between the orbits, two small, above each antenna ; the four middle 

 teeth are subequal, subacute, the outer pair a little wider at base than 



