240 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.43. 



short malar space and absence of the transverse radius will readily 

 separate Caulocampus from Hoplocampa. 

 Type. — PriopJiorus acericaulis MacGillivray. 



CAULOCAMPUS ACERICAULIS (MacGillivray.) 



Priophorus acericaulis MacGillivray, (Jan. Eiit., vol. 38, 190(3, p. 306. 

 Priophorus acericaulis Briton, Ent, News, vol. 17, 190G, pp. 313-321, pi. 15, 

 figs. 1, 23. 



Paratype.—Csit. No, 14594 U.vS.N.M. 



Tribe NEMATINI. 



DINEURIDEA, new genus. 



Belongs to the Nematini and is related to Dineura Dahlbom, from 

 which it may easily be separated by the simple tarsal claws. 



Clypeus emarginate; malar space present; lateral ocelli well beliind 

 the supraorbital line; pentagonal area poorly defined; venation like 

 Dineura; hind basitarsis much shorter than the following joints; 

 claws simple; last ventral segment of female emarginate in the mid- 

 dle; cerci long; sheath stout, of the normal type. 



Type. — Marlattia erythrothorax Roliwer. 



Genus EUURA Newman. 



EUURA SERISSIM.^, new species. 



Runs to Euura hrachycarpae Rohwer in the latest table to these 

 insects, but may easily be separated by the smaller size, more sharply 

 pointed sheath, and different conformation of the head. 



Female. — Length, 3 mm. Clypeus broadly arcuately emarginate, 

 lobes low and broadly rounded; supraclypeal foveas not sharply 

 differentiated from the large antennal fovese; supraclypeal area 

 rectangular in outline, strongly carinated; middle fovea elongate, 

 well defined, breaking through the crest; antennal furrows obsolete; 

 ocellar basin sharply defined, pentagonal in outline; postocellar 

 area not defined; postocellar furrow present; postocellar line sub- 

 equal with the ocellocular line; flagellum wanting; stigma tapering 

 from near base to apex; lower discal cell of hind wings longer than 

 the upper; inner tooth of claw shorter than the outer; cerci long, 

 hardly tapering; sheath rather broad at base, tapering (above and 

 below) to an acute apex. Black; clypeus, labrum, mandibles 

 (apices piceous), supraclypeal area, narrow inner orbits, angles of 

 pronotum, tegulse, legs (except piceous hind tibiae and tarsi), and 

 ventral segments testaceous or paler; wings hyaline, iridescent; 

 venation pale brown, costa and base of stigma pallid. 



Toronto, Ontario, Canada. One female bred from galls made on the 

 leaf petiole of Salix serissima, by A. C. Cosens. 



Type.— C&i. No. 14573, U.S.N.M. 



