242 THK CANAHIAN ENToMnUKJIHT. 



absence of the pair of brown vittae on the mesonotum. I have not been 

 able to detect the sh'ghtest trace of this in any of my specimens. I 

 describe this form as new with some hesitation, on account of the rather 

 variable nature of the specific characters in our specimens of this genus. 

 However, it is probable that this variation is due in part, at least, to the 

 immaturity of bred specimens. Those from which the above description 

 was taken are apparently cpiite well devclo[)ed and the abdominal 

 characters are well marked. They differ from the other species, moreover, 

 in their slightly larger size. 



NOTES ON TKNTHRKDINOIDK.V. \VH H DESCRIPTIONS OK 



NEW SPELT E.S. 



BY .S. A. ROHWER, WASHINGTON, D. C 



Papkr XII. — (Genus Hoi'LOCampa I.) 

 The genus Jloplocampa Hartig was described in :S37 (Fam. d. Hlatt. 

 und Holzwesp., p. 276), as a subgenus o{ SeUndria Leach. It originally 

 included eight species, but has since been restricted to species which are 

 congeneric with Tenthredo (.\llantus) brn'is Klug. Hy different writers of 

 Tenthredinoidea Hoplocampa has been treated differently, some placing it 

 with Hemichroa Stephens, while others have considered it more closely allied 

 to Phyllotoma I'allen and Eriocampoides Konow. It is in many ways 

 related to BUnnocampa (and allies) on the one hand and Nemattis (and 

 allies) on the other. Perhaps it should form a distinct tribe, separated 

 from the Nematidi by the presence of a radial cross-vein, different shaped 

 head and antennte in the adult, and in having the larva 22 footed, as in 

 BUnnocampids. From the Blennocampidi the adult differs in the position 

 of the basal vein and the non parallel first recurrent vein and other 

 characters. 



Characten of Jloplocampa llariig. 

 Small species ; clypeus emarginale or subtruncate ; malar space 

 wanting or present ; antennap 9 jointed, the pedccellum lt)iiger than wide ; 

 ocelli in a low triangle ; orbits rather narrow, the vertex rounded ; last 

 ventral segment of the female produced in the apical middle ; sheath of 

 the normal type ; hypopygidiuni large ; postbasitarsis much shorter than 

 the following joints ; claws with a small inner tooth ; mesothorax without 

 sutures which separate pr?e-plites; basal plates well separated; venation 

 similar to the figure of Ifoplocampa ftt ru^inea (Fabricius), as figured on 

 plate XXXIII, fig. 61, Proc. U. S. Nat. Mus., Vol. XXIX, No 1438, 1906. 



Jul). 1910 



