Mr. R. E. Turner on Fossorial Uymenoptera. 357 



XLII, — Notes on Fossorid ITymenoptera. — XX XT. On 

 Pr^ainmocharidEe in the British Museum. By ROWLAND 

 E. Turner, F.Z.S., F.E.S. 



Genus Irenangelus, Scliulz. 



Irenangelus, Schulz, Spolia Hymenopterologica, p. 175 (190G). 

 Type of the genus, Irenangelus reversus, Sm. 



1. Irenangelus reversus, Sm. 



Af/em'a reversa, Sm. Ann. & Mag-. Not. Hist. (4) xi. p. 448 (1873). $ , 

 Psendagenia reversa, Kohl, Verh. zool.-bot. Ges. Wien, xxxiv. p. 42 



(1884). 

 Irenangelus humus, Schulz, Spolia Hymenopterologica, p. 180 (1906). 



$. 



Hah. Para ; Oyapok. 



2. Irenangelus ichneumonoides, Diicke. 



Irenangelus ichneumonoides, Diicke, Revue d'Entomol. xxvii. p. 51 

 (1908). $ S . 



Hah. Amazon. 



A specimen of this species in the Britisli Museum bears 

 the M!S. name Ceropahs exilisy Bingliam, and corresponds 

 well to the description, but is without a black band on the 

 pronotum, and the wings are hyaline, not yellowish, with the 

 costa and radial cell infuscate, as in the type. The median 

 segment is smooth throughout, not finely rugulose at the 

 apex as in the description of the type. I have not seen a 

 typical specimen, but am inclined to regard exilis merely as 

 a variety. The front below the antennge and the clypeus are 

 very much more elongate than in reversus ; also the sculpture 

 of the front and the shape of the third cubital cell are very 

 different, as noticed by Diicke. 



3. Irenangelus mexicanus, sp. n. 



5 . Flavo-testacea, nitida ; mandibulis apiee, flagelloque, articulis 

 duobus basalibus exceptis, uigris ; alis flavo-hyalinis, iridescenti- 

 bus, apice late infumatis, venis brunueis. 

 Long. 9 mm. 



? . Labrum broadly rounded at the apex, not emarginate. 

 Clypeus finely and closely punctured, slightly convex, much 



