224 ASHMEAD [^iS] 



Tyfe. — Cat. No. 5652, U. S. Nat. Museum. From Juneau, July 

 25. One specimen. 



In color and general appearance this species very closely resembles 

 Cosmoconus canadensis Provancher, and one must give the closest atten- 

 tion to its structural characters or it might be easily confounded with it. 



Genus Calliphrurus Forster. 



Prior to the Harriman Expedition only a single species belonging to 

 this genus was known in North America. 



In the Alaskan material ten additional species have been discovered, 

 which may be tabulated as follows : 



TABLE OF SPECIES. 



1 . Head and thorax black. 



Abdomen not entirely black ; dorsal segments more or less rufous. 



8. 



Abdomen black or at most with only the extreme apex of one or 



more of the segments whitish or testaceous 2. 



2. All coxae black 3. 



Not all the coxae black 5. 



3. Smaller species, less than 6 mm. or no longer 4. 



Larger species, more than 6 mm. long. 



Legs rufous with the front and middle trochanters, the second joint 

 of hind trochanter, tibial spurs, palpi, tegulae, and ventral fold 

 yellowish- white ; coxae, hind femora, base and apex of their 

 tibiae and tarsi black. 



Abdomen above black with the apices of the second and third segments 

 nearly yellowish ; cljpeus and mandibles yellow ; no spot in front of 

 each lateral mesothoracic lobe. Female C. clypeatus. 



Abdomen with dorsal segments 2 to 6 or 7, narrowly at apex flavo-testa- 

 ceous, the third and fourth usually also with a large median spot 

 toward apex; clypeus, mandibles and a spot on scape beneath yellow; 

 legs rufous. Male C. clypeatus. 



Legs rufous, with the^trochanters, except first joint above, V^^Vh 

 tegulae and ventral fold yellowish- white ; tibial spurs testa- 

 ceous ; coxae, basal joint of trochanters above, tips of hind 

 tibiae and tarsi black or fuscous. 



Clypeus, mandibles and a triangular mark in front of each lateral 

 mesothoracic lobe that extends slightly on to the angles of the middle 

 lobe, yellow. Female C. alaskensis. 



Clypeus, mandibles and tegulae yellow or yellowish ; mesonotum im- 

 maculate; flagellum, except two or three basal joints, ferruginous. 

 Female C. affinis. 



