AMERICAN HYMENOPTERA. 443 



Front aciculated, furrowed down the middle. Pro- and mesothorax 

 finely closely punctured, the pleurae slightly more strongly than the 

 top ; the metanotum is more strongly punctured than the mesonotum ; 

 the posterior median area transversely striated. There is a distinct 

 petiolar area, longer than wide; the basal lateral areae are large, four- 

 angled, gradually, obliquely narrowed from the base to the apex, which 

 is transverse and one-fourth of the width of the base ; outside this is a 

 triangular area, the narrowed part being at the spiracles; there are 

 thus two lateral areas on either side of the areola ; there are two large 

 outer lateral areae extending from the base to the apex ; the outer 

 reaches to the coxae; the inner is bounded by a curved keel. There 

 is a wide curved striated belt down the middle of the mesopleurae. 



Mendoza, February. 

 27./- i *Hiiiori>hota tricolorata sp. n. 



Black, opaque, alutaceous, the abdomen, especially at the base and 

 apex, shining; the under side of antennal scape and the mandibles, 

 except their apex, pale yellow ; the fourth and following segments of 

 the abdomen ferruginous ; the genital armature black ; legs rufous, 

 the apex of the coxae narrowly and the four anterior trochanters yellow ; 

 the rest of the coxae, the tarsi, the greater part of the hind trochanters 

 and the hind tibiae, black ; wings hyaline, the stigma and nervures 

 black; the areolet small and with a pedicle longer than it. d n . Length 

 7 mm. 



Face and temples densely covered with dull silvery pubescence. 

 Thorax closely minutely punctured. The metanotum regularly areo- 

 lated ; the areola three times longer than wide, the widened base 

 (behind the transverse keels) roundly narrowed ; there is a petiolar 

 area ; from the keels it becomes narrowed towards the apex, which is 

 transverse ; the posterior median area is transversely roughened ; the 

 spiracles are small, broadly oval. First abdominal segment longly 

 nodose at the apex; it is as long as the second. The apical nervures 

 in the hind wings are obliterated. 

 Mendoza, March. 



This species agrees fairly well with the description of 

 Amorphota Foer., it certainly cannot be referred to any of the 

 other genera with the clypeus and face forming one piece. 



braconid^f:. 



Braconin^e. 

 IPHIAULAX Fcer. 

 The species of this genus in the collection have the bodies 

 of a bright red color, with black legs and dark fuscous wings 

 with pale ochraceous stigma. They are very smooth and 

 shining. The following table shows the main differences of 

 the species : 



TRANS. AM. ENT. SOC, XXXV. DECEMBER, 1909 



