156 



inctly punctured; the scutellum is more strongly punctured tlian the 

 me«onotum; the positseutellum and the median segment are impunctate. 

 The postscutellum has a steep slope, longish and transverse below. 

 Except the apical, the abdominal segments are closely strongly punc- 

 tured. The recurrent nervures are close together and are received 

 behind the middle of the cellule. 



Belongs to Dueke's group of Chartarius 1. c. p. 324. It is not, I 

 consider, the male of either chartarius Ol., or glohiventris Sauss. The 

 ma.leiS of the species of Chartergus seem to be comparatively rare. The 

 present species appears to be more nearly related to chartarius than 

 to glohiventris, e. g. the latter has not a yellow line on the pronotum, 

 and according to Saussure (Vespides, 222), the postscutellum has "3. 

 rudiment of a tubercle"; the postscutellum of chartarius he des- 

 cribes, 1. c, as bearing in the middle a "spiiiiform tubercle". 



.S944 Polybia albopicta Sm. 



Prof. Baker sends, taken at Obidos Brazil, a Polvbia which, except 

 that the markings are of a more yellowish hue, agrees with a speci- 

 men named for me by W. Frederick Smith, P. albopicta Sm. (Cat. 

 Hym. Ins. Brit. Mus. V. 131) and taken by the Rev. W. Harper in 

 Demorara. It belongs to Saussure 's Division "M. Y. (IVe Div.) ". It 

 is smooth, impunctate ;there is a malar space as long as the pedicel of 

 the antennae. Ocelli in a triangle; the hinder sepajated from the 

 eyes by twice the distance they are from each other. The third anten- 

 nal joint is aearly as long 'as the following. 



NEW SPECIES OF TIPHIA COLLECTED BY PROF. C. F. BAKER 



IN NEVADA AND NICARAGUA 



By P. CAMERON 



3431 Tiphia truncata sp. nov. 



Length 8 mm. Male. Ornisby county, Nevada. July. 



This species may readily be known from nevadana and puncticeps "by 

 the central keeJ on the metanotum being obsolete, by the apex of the 

 radius being straight, not rounded, and by the metapleuirae being clo- 

 sely striated throughout, strongly above, more weakly below. 



Front and vertex strongly, closely punctured except for a space 

 behind the hinder ocelli; the front more closely punctured than the 

 vertex, below almost reticulated. Face and clypeus strongly closely 

 punctured except for a narrow curved band on the apex. Mesonotum 

 atrongly, but not cloeely punctured, a smooth spajce along the eidee. 

 Scutellum not so strongly punctured and with a smootk space before 



