466 ARKIV FÖR ZOOLOGI. BAND 1. 



a quadrate depression between the base of the antennae and 

 the ocelli, bnt this depression is not distinct by my speci- 

 mens, there is only a quadrate plain that upwards is limited 

 by a low transverse carina. The female bas a little trans- 

 verse depression below the ocelli. In otber parts tlie speci- 

 mens are agreeing with the description of the species in 

 Sauss. & Sichel, Cat. spec. gen. Scolia 1864, p. 106. 



5. Scolia (Triscolia) trianguiifer Tullgr. n. sp. 



This species is nearly related to Se. opalina Smith but 

 differs in some important points. 



Female. — Brilliant black, the abdomen iridescent in cer- 

 tain lights, sparsely covered with short black hairs, on the 

 sides of the thorax with an adpressed 

 sparse grayish pubescence. 



Clypeus broad triangulär with the 

 anterior margin in the middle arcuate 

 and on each side a little sinuated; in the 

 middle a large elevation that upwards 

 projects as a ridge towards the base of 

 the antennse. The clypeus only with 

 punctuations at the sides. The front 

 Fig. 1. Head of Scolia sparsely and coarsely punctured with a 

 trianguiifer. (Jeep triangulär depression between the 



base of the antennse and the ocelli. The 

 vertex a little more densely punctured. The interval be- 

 tween the posterior ocelli not as long as the haif of the dis- 

 tance from the eyes. 



The thorax is densely punctured except the teguhe and 

 the disc of the mesonotum that are nearly smooth. The me- 

 dian segment is strongly excavated. 



Between the first and second abdominal segment is a 

 little contraction. The four first abdominal segments in the 

 middle-line sparsely at the sides closely punctured; the last 

 segments closely punctured above the whole dorsal surface. 

 The venter sparsely punctured in the middle-line, very clo- 

 sely at the sides. 



The wings dark fuscous with an intense bluish effulgence. 

 Three cubital cells of which the third one reaches a little be- 

 hind the radial cell. 



