280 Mr. F. W. Edwards on the so-called 



the geuus Ceratocheiius to what is found in ToxorrJdna. No 

 further notice was taken of this resemblance at the time, 

 and no comparisons were made with the descriptions of 

 Toxorrhina, Early in the present year, however, the writer 

 had occasion to examine carefully Dr. Speiser's description 

 of Styrinyomyia cornicjera (Berlin, ent. Zeit. lii. 1907, 

 p. 130), and a suspicion at once arose that this species was 

 related to Ceratocheiius. This suspicion was confirmed by a 

 re-reading of Wesche^s paper, whde an examination of the 

 types in the British Museum showed that a considerable 

 amount of confusion of names had arisen, which required 

 clearing up. 



The first thing that was evident from this examination 

 was that the type specimens of Ceratocheiius u-innsamj>soni 

 agreed so closely with the description of St;irinyomyia 

 cornigern as to leave no room for doubting that the two 

 names applied to one and the same species. The name 

 Styringomyia is evidently wrongly applied to cornigera, for 

 Loew in his original description of the geuus (Dipt. Beit. i. 

 p. 6) says " proboscis brevis,'^ while the figures of the wing 

 given by Loew and Osten-Sacken show a considerable 

 divergence from the ncuration of S. cornigera, though it is 

 true there is a certain general resemblance. Fortunately 

 the writer has seen a large number of recent examples of 

 the last-named genus, and there is clearly no close relation 

 between it and Ceratocheiius. 



An examination was next made of the types of Neoccrato- 

 cheihis, and it was found that in ncuration and in the 

 structure of the head, antennie, thorax, legs, and abdomen 

 there was nothing to separate this genus from Toxorrhina. 

 The only noticeable dilference is that in A^. yrahami the 

 great cross-vein is placed before the base of the discal cell. 

 This character cannot be regarded as generic, and is exhibited 

 also by T. cisatlantica, Speiser. Neoceratocheilus graliami is 

 evidently closely allied to T. cisatlantica, but ditt'ers in the 

 (lark halteres, those of the latter species being described as 

 Mhite. Wesche, in his description of Neoceratocheilus, 

 omits to mention that the anttnnee are twelve-jointed in 

 both sexes (as in Toxorrhina), and he incorrectly states 

 that the head has " a fiat [)latc inserted at the dorsal base of 

 the proboscis.^^ This latter feature is peculiar to the genus 

 CeraCuchcilas ; it is not found in the related genera 7 aror- 

 rhina and Elephantomyia, nor in the genus Styringomyia ; 

 it is, in fact, one of the most important diagnostic characters 

 of Ceratocheiius. This very remarkable structure has been 

 well described by Speiser, who speaks of it as a corniculus ; 



