320 TENTHREDINID^. 



179. Tenthredo (?) aperta. 

 (Plate XII. fig. 16.) 

 Exp. al. 9| lin., long. corp. 4 lin. 



Head pale yellow ; a large black spot, trifid in front, covers the 

 middle of the vertex from the occiput to the antennae, but does not 

 extend to the eyes ; antennas black, joints 5-8 yellow, joints 3 and 

 4 of equal length. Thorax black above ; V-spot, scutellum, and post- 

 scutellum yellow ; tegulae and cenchri more reddish ; pectus reddish in 

 the middle, the sides yellow, bordered with black before and behind. 

 Abdomen testaceous, black at the base, and with a broad blackish 

 band on the middle of each segment above, except towards the ex- 

 tremity. Legs rufo-testaceous or yellowish : intermediate tibiae black 

 at the base, and three last joints of intermediate tarsi black ; base 

 of hind femora above, and hind tibiae except at the tips, black. 

 Wings hyaline, with brown nervures ; base of wings and of stigma 

 yellowish. 



This species does not agree very well with Tenthredo : the antennae 

 are long and slender, quite as long as the body, and the third and 

 fourth joints are of equal length ; the wings are long, and the lan- 

 ceolate cell is open ; the abdomen is flattened and comparatively 

 short, and the hind coxae extend as far as the third segment. 



Hah. Mexico. 



a. 2 • (Type.) Orizaba. M. Salle. 



C. Indian Species. 

 180. Tenthredo smithii. 

 (Plate XI. fig. 9.) 

 Exp. al. 14 lin., long. corp. 7 lin. 



Closely allied to T. fortunii, Kirby (ante, no. 105. p. 307) ; but the 

 collar, V-spot, two marks on the thorax behind, scutellum, the sides 

 of the pectus, the sides of the coxae, and the four basal joints of the 

 abdomen are yellowish. Pour hinder femora with a short black line 

 above at the base ; no distinct lines on the other parts of the legs. 



Hob. India. 



a. 2 • (Type.) India. From the late F. Smith's 



Collection. 



181. Tenthredo fallax. 

 Tenthredo fallax. Smith, 2nd Yarkand Miss. p. 20 (1878). 

 Hah. Kashmir; Punjab. 



