212 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL.21 



1894); San Felix Island, C. E. Porter (Rathbun, 1925); Tumbes 

 (Lenz) ; Talcahuano (Poeppig; Lenz; Porter, 1903), Strassenberg 

 (Doflein and Balss), Hassler (Rathbun, 1925) ; Lota, Bay of Arauco 

 (Cunningham) ; Corral (Porter, 1903) ; Ancud, Chiloe (Cunning- 

 ham) ; Chonos, Chiloe, Vettor Pisani (Cano) ; Port Otway [Puerto 

 Barroso], Albatross (Rathbun, 1898) ; Halt Bay, Magenta (Targioni- 

 Tozzetti, 1872a) ; Trinidad Channel, Alert (Miers) ; Puerto Bueno, 

 Magenta (Targioni-Tozzetti, 1872a) ; west coast of South America, 

 H. E. Ames (Rathbun, 1925). 



Atlantic analogue: None. A Pacific austral species. 



Diagnosis: A preorbital tooth ; postorbital tooth reduced to a tubercle. 

 A supplementary tooth on anterior margin between orbit and antero- 

 lateral angle. Inferior distal tooth of propodites of ambulatory legs weak. 

 Four lateral teeth; margin of carapace not strongly rimmed. Apex of 

 male first pleopod not flaring widely, tip pointed ; a stout median projec- 

 tion supporting a tonguelike projection arising from within orifice. 



Description: Carapace suborbicular, save for the rostrum, very con- 

 vex in both directions, densely punctate and with four lateral teeth, the 

 first three acute, the last one blunt, tuberculiform ; two small, obscure 

 tubercles on anterior part of gastric region. Rostrum with strongly con- 

 vergent margins, bifid at extremity, notch narrow. Postocular lobule 

 minute, formed by a thickening of the orbital rim, and separated by a 

 sinus from an infraorbital lobule. Antennae not exceeding rostrum. 



Chelipeds of old male not longer than first leg; tubercles or stout 

 spines on the upper surface near the proximal end and one or two smaller 

 ones on the lower surface ; carpus with a short, stout spine or tooth at the 

 anterointernal angle ; manus compressed, little dilated ; fingers stout, 

 dentate, narrowly gaping to near the extremity; prehensile teeth strong. 



Ambulatory legs shorter than in allied species [see Remarks below] , 

 especially the dactyli ; dactyli with two rows of strong, graduated, horny 

 spinules beneath; propodites with an obscure tubercle or tooth below 

 near distal end. 



Fifth segment of male abdomen longer than sixth. (Rathbun, 1925) 



Material examined: 70 specimens from 11 Lund University Chile 

 Expedition localities. (See Table 40) From Montemar, north of Val- 

 paraiso, to Bahia de Ancud, Chiloe. One ovigerous female and a male 

 first pleopod from a lot of three males and three females (U.S.N.M. 

 No. 21903) collected at Port Otway [Puerto Barroso], Magallanes 

 Territory, Chile, February 9-10, 1888, by the U. S. Fish Commission 



