362 KINCAID 



TENTHREDO MELLINA. 

 Tenthredo mellina Norton, Bost. Jour. Nat. Hist., vii, 2, p. 254, i860. 



Three females, Popof Island. Taken on the flowers of Heracleu7n 

 lanatum. 



TENTHREDO EVANSII. 

 Tenthredo evansii Harrington, Can. Ent.,xxi, p. 78, 1889. (Tenthredopsis.) 



Five females and four males, Sitka, June 16; Yakutat, June 21 ; 

 Saldovia, July 21 ; Kadiak, July 20; Virgin Bay, June 26. This is 

 a very variable species, the amount of black pigment on the dorsulum 

 of the abdomen varying considerably. The female in some of its va- 

 riations resembles Te?tthredo californica Norton, but the males are 

 extremely different ; in californica the latter sex has the dorsal surface 

 of the abdomen almost entirely black, while in evansii the correspond- 

 ing region is yellowish green with a variable narrow band across each 

 segment. 



TENTHREDO LINEATA. 

 Tenthredo lineata Provancher, Natural. Canad., x, p. 198, 1878. 



Three females, Sitka, June 16; Virgin Bay, June, 26; Gustavus 

 Point. Previously known from Canada, Colorado, and New Hamp- 

 shire. 



TENTHREDO FLAVOMARGINIS. 

 Tenthredo flavomargi7iis Norton, Bost. Jour. Nat. Hist., vii, 2, p. 254, i860. 



Five females and one male. Berg Bay, June 10; Yakutat, June 21 ; 

 Saldovia, July 21. The male resembles the female except in the nar- 

 rower form of the body and in the presence of three reddish-brown 

 spots on the dorsum of the abdomen. This species was originally 

 described by Norton from Connecticut, but is also known from Col- 

 orado. 



TENTHREDO NIGRICOLLIS. 

 Tenthredo nigricoHisKi-R^Y, List, Hym. Br. Mus., I, p. 308, 1882. 



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

 Kukak Bay, July 4. This species was originally described by Kirby 

 from Newfoundland, and is also recorded from New Hampshire. 

 The male differs from the female in the narrower form of the body 

 and in the presence of several pale-brown spots on the upper surface 

 of the abdomen; it agrees very closely with the male described by 

 Mr. Harrington as Tenthredo semicornis (Can. Ent, , xxi, p. 98, 

 1889), and may prove to be identical with it. 



