54 Mr. P. Cameron on new 



an entirely different group. The name Tonalia (Gray, 1827) 

 Mas riglitly applied by Mr. T. S. Palmer * in 1898 to tiie 

 genus called Lopliostoma (d'Orb., 1847) in Dobson's Cata- 

 logue, of which the type is Spix's species. 



Toyiatia ambli/otis, Wagn. 



Examples of this rare bat have been received by the 

 Museum from Bogava, Chiriqui, Panama (//. /. Watson), 

 and Bogota {G. D. Child). It may be noticed that by a 

 mistranslation of a sentence in Peters's description (" durch 

 cin kurzes Band mit der Stirn verbundeu ") the species is 

 erroneously stated by Dobsou to have a connecting-baiid 

 across the forehead between the ears. The structure described 

 by Peters is the usual small basal band behind each ear 

 present in all members of the group. The point is of im- 

 portance, as Dobson has placed the character in a prominent 

 position in his synopsis of species. 



X. — Descriptions of new Species of FossoriaJ Hymenojjtera 

 from the Khasia Hills, Assam. By P. Cameron. 



This paper is in continuation of previous papers published 

 in this Magazine on the Hymeuoptera of the Khasia Hills. 

 The types of the species are iu the Collection of Mr. G. A. 

 J. llothney. 



Ampulex Rothneyi, sp. n. 



Black, with some violet patches on the head and thorax, 

 the basal half of the hinder femora red ; the wings smoky, 

 the stigma and nervures black ; the front wings with two 

 cubital cellules. ? . 



Long. 16-17 ram. 



Antennse black, bare ; the thiid joint nearly as long as the 

 fourth and fifth united. Head well developed behind the 

 eyes and not much narrowed there; the vertex is strongly 

 punctured, more closely and stron<ily in front than behind ; 

 the front is coarsely and irregularly punctured ; there is a 

 longitudinal keel down the centre with some less distinct 

 oblique keels running into it. Prothorax stout, twice longer 

 than wide ; the base is narrowed and is separated from the 

 main body by a curved furrow. Mesonotum with two irre- 

 gular transverse rows of furrows on the basal half. The 

 * Pr. Biol. Soc. Wash. xii. p. Ill (1896). 



