176 ASHMEAD 



Tribe PHTGADEUONINL 

 Genus Stibeutes Fdrster. 



STIBEUTES NIGRITA Ashmead. 



Stibeutes nigrita ASHMEAD, Fur Seals and Fur Seal Isl., Pt. iv, p. 338, ?, 

 1899. 



Type. Cat. No. 3650, U. S. Nat. Museum. From St. Paul Island 

 (Fur Seal Commission) ; Copper Island, Asia (Dr. L. Stejneger). 



Genus Stiboscopus Forster. 



In this genus should be placed Stilpnus hudsonicus Cresson, described 

 from Hudson Bay Territory. It is well represented in our fauna and 

 six species have been recognized in the Alaskan material, distinguish- 

 able by the aid of the following table. 



TABLE OF SPECIES. 



i . Species ferruginous ........................................................ 6 



Species black or at least with the head and thorax black. 



Abdomen entirely black or at most with only a slight piceous 

 tinge on the second segment ........................................ 2 



Abdomen not entirely black ............................................ 4 



2. Hind coxae alone black, the front and middle coxa? ferruginous 

 or only black basally ........................................ . ......... 3 



All coxae black. 



Legs mostly black, with the sutures of trochanters, tibiae and the extreme 

 apices of tarsal joints, dark rufous ; antennae 2O-jointed, incrassate 

 toward apex. Female ............................................ S. sanctipauli. 



3. Legs, except hind coxa 1 , ferruginous ; antenna; 2i-jointed, not incrassate 

 toward apex. Female ................................................. 6 1 . alaskensis. 



4. Abdomen black, with the sutures i and 2 testaceous, the color 

 sometimes extending more or less distinctly on the surrounding 

 surface .................................................................... 5 



Abdomen black, with a narrow testaceous band at base of third 

 segment. 



Antennas 24-jointed ; legs mostly black with sutures of trochanters, 

 knees, tibite, except at apex, and the front and middle tarsi, flavo-tes- 

 taceous. Male .......................................................... S. solitarius. 



