[363] THE TENTHREDINOIDEA IO3 



TENTHREDO ERYTHROMERA. 



Tenthredo erythromera Provancher, Addit. Faun. Canada, Hym6n., p. 13, 

 1885. 



Ten females, Sitka, June 16; Metlakahtla, June 4; Muir Inlet, 

 June 10; Saldovia, July 21 ; Kukak Bay, July 4; Yakutat, June 21 ; 

 Kadiak, July 4. This species was described by Provancher, from 

 Vancouver Island, but it also occurs in Colorado and Washington. 

 The specimens in the collection vary but slightly, except in the colora- 

 tion of the labrum and clypeus, which range from almost pure yellow 

 to black. 



TENTHREDO MELANOSOMA. 

 Tenthredo melanosoma Harrington, Can. Ent., xxvi, p. 194, 1894. 



Six females and one male, Sitka, June 16; Saldovia, July 21; 

 Yakutat, June 21 ; Kadiak, July 20. This species was described by 

 Mr. Harrington, from Fort Wrangell, Alaska. The male resembles 

 the female, except in the narrower form of the body and in the pres- 

 ence of three brown vittae on the dorsulum of the abdomen. 



TENTHREDO HARRIMANI sp. nov. 



Female : Black with the following parts ferruginous : Antennae, 

 spot externally on jaws, tegulae, all of legs beyond trochanters, varia- 

 ble obscure spots on disc of third, fourth, and fifth tergal segment of 

 abdomen; clypeus, labrum, base of mandibles, spot between antennae, 

 narrow line at lower margin of eyes, posterior angles of pronotum, 

 and small circular spot above posterior coxae, yellow ; clypeus squarely 

 and deeply emarginate with the lobes obliquely truncate ; antennae with 

 the third joint one-quarter longer than the fourth ; wings yellowish hy- 

 aline, nervures brown, stigma pale brown. Length 10 mm. 



Four females, Fopof Island, July 15, 1899. 



Type no. 5310, U. S. National Museum. 



Named In honor of Mr. Edward H. Harriman, of New York, in 

 appreciation of his generous aid to scientific investigation. 



TENTHREDO DISSIMULANS sp. nov. 



Female : Light green with the following parts black : Ocelli, an 

 irregular spot surrounding the ©cellar prominence and extending 

 backwards in two bands that almost reach the posterior margin of the 

 head, fine lines in the sutures of the mesonotum, spots at the base of 

 the wings, spot before scutellum, sutures of tergal abdominal seg- 

 ments sometimes expanded into semilunar spots ; legs green, with a 



