PisoN. 219 



2 <S • Head and thorax thinly pubescent ; abdomen smooth and 

 shining, with the base of the 1st and the apical margins of the 

 basal four segments thinly pubescent ; head in front rather closely 

 and coarsely punctured, a transverse obscure furrow on the vertex 

 behind the ocelli ; inesonotum in front, scutellum and postscutellum 

 more sparsely punctured, shining; median segment at base coarsely 

 and obliquely striate, the apex concavo-truncate, a medial longi- 

 tudinal furrow from base to verge of truncation, the furrow and 

 the truncation transversely striate ; abdomen with the basal 

 segment strongly, the others sparingly punctured. Black ; the 

 pubescence silvery, dense on the clypeus, front, sides and apex of 

 the median segment ; wings hyaline, nervures and tegulse testa- 

 ceous, the 2nd recurrent nervure received in the middle of the 2nd 

 cubital cell. 



Hah. Mainpuri, N.W.P.; Calcutta; Poona; Burma; Tenasserim. 

 2 . Length 9-l0 ; ex2^. 16 mm. J* Length 8; exj). 16 mm. 



410. Pison SUSpiciosum, Smith, Jour. Linn. Soc. 1858, p. 104, $ ; 



id. Trans. Ent. Soc. 1869, p. 291 : Xohl, Verh. zool.-hot. Ges. 

 Wien, 1884, p. 188 ; Cam. Mem. Manch. L. Ph. Soc. (4) ii, 1889, 

 p. 118. 



$ S . Very closely allied to P. rugosum, Smith, and resembling it; 

 but differing from that species in the shape of the median segment, 

 which is roundly truncate with a medial longitudinal furrow, the 

 furrow smooth and shining, not transversely striate ; in the abdo- 

 men having only a few scattered delicate punctures, with the base 

 of the 2nd segment always transversely striate ; and in the neuration 

 of the wings, the 2nd recurrent nervure being received at the apex 

 and not in the middle of the 2nd cubital cell. These differences 

 seem constant. 



Bab. Burma ; Tenasserim ; Singapore. $ J • Length 8-9 ; exj). 

 16-17 mm. 



411. Pison punctifrons, Shuck. Trans. Ent. Soc. ii, 1837, p. 77, $ ; 



Smith, Cat. iv, p. 313; Kohl, Verh. zool.-bot. Ges. Wien, 1884, 

 p. 188 ; Cam. Mem. Manch. L. Ph. Soc. (4) ii, 1889, p. 118. 



5 (^ . Head and thorax coarsely and closely punctured, the 

 latter especially more so than in the closely allied species P. rugo- 

 sum ; a deep transverse furrow on the vertex behind the ocelli ; 

 median segment coarsely obliquely striate, the apex truncate, the 

 truncation transversely striate ; a medial longitudinally impressed 

 thin line from base to apex of segment, widening on the verge of the 

 truncated portion into a shining fovea ; the clypeus, the front, sides 

 and apex of the median segment with thin long soft pubescence ; 

 abdomen smooth and shining, the sides of the segments posteriorly 

 broadly pilose. Black, the pubescence silvery ; the wings hyaline, 

 their apical margins narrowly fuscescent, the recurrent nervures 

 interstitial with 1st and 2nd transverse cubital nervures. 



Hah. North-West Provinces ; Sikhim ; Burma ; Tenasserim. 

 2 d . Length 10-12 ; ea-p. 18-23 mm. 



