112 THE CANADIAN ENTOMOLOGIST. 



trochanters, femora, tibi:v and tarsi, except a black line above (the inter- 

 mediate tibiae and tarsi are slightly rufous), posterior cox:t? and trochanters, 

 except a black line above, yellow; posterior femora, except a black line 

 above, all of the tibia- and tarsi, rufous; abdomen, except a narrow line 

 on the margin of the posterior segment, rufous ; venter at the base a little 

 whitish. Wings subhyaline ; nervures dark brown, costa and base of the 

 stigma rufous. 



Ifiibitat. — Rist Canyon. Larimer Co., Colorado, July 3, 1897. 

 "Taken sweeping rose bushes." Collected by E. (i. Titus, for whom it is 

 named. Type in the collection of the Colorado Agricultural College. A 

 male from Ute Creek, Costilla Co., Colorado, alt., 9.000 ft., July 1, 1907 

 (R. W. Dawson), is a little smaller, and there is no black line on the 

 anterior tibiae. 



This species comes near messica, MacG., but differs in not having the 

 yellow of the mesopleunc and the pectus continent, and the entirely rufous 

 posterior tibiae. 



Tenthredo divergens, n. sp. 



This species is very close to Titusi, but the clypeus is deeply, cir- 

 cularly emarginate. and the following differences were noted : 



T. Titusi. T. divergens. 



1. Very robust. 1. Not so robust. 



2. Third antennal joint a third 2. Third antenna] joint but a fourth 



longer than the fourth. longer than the fourth. 



3. Mesocoxre almost all yellow. 3. Mesocoxae almost all black. 



4. Posterior tibue without a black 4. Posterior tibiae with a black line 



line above. above. 



5. Claws deeply cleft. 5. Claws not so deeply cleft. 



6. Postscutellum with a carina. 6. Postscutellum without a carina. 



7. Tran. med. not so near the basal. 7. Tran. med. about a fifth of the 



length of the cell from the v 

 basal nervure. 



Habitat. — Florissant, Colorado, July 7 and 13, 1907, on foliage of 

 Salix brachycarpa (S. A. Rohwer). 



The Fyles Collection of Province of Quebec Lepidoptera has been 

 purchased by the Quebec Government, for the Provincial .Museum in the 

 Parliament Building at Quebec. The Provencher Collection of Hymen- 

 optera is in the same museum. 



