﻿634 Prof. Mario Bezzi's Rfport on a Collection of 



The stumps of veius described by Loew are often wanting. 

 Two specimens from West Nyasa, Mulowe {Dr. H. S. 

 Stannus). 



47. Litorrhynchus dilatatus, sp. nov. 



Ç . Length of the body (of 2 specimens) 10-11 mm., of the wiiig.s 

 11-12 mm. 



Very closely allied to the preceding species, but distinguished by 

 the middle cross-band of the wing being dilated at the lower end. 



Head as in L. rostratns ; the antennae also, but the third joint 

 reddish. Thorax in front with a collar of reddish hairs ; pleurae 

 with the black tuft of the preceding, and a white tuft beneath the 

 posterior calli. Haltères and squamulae blackish, scutellum reddish, 

 with black marginal bristles. Abdomen black, narrowly reddish 

 on the sides of the second and third segments ; its hairs are black, 

 those on the sides also, with the exception of the first segment, 

 which is clothed with the usual white hairs. The silvery spots on 

 the third, fifth and sixth segments are normally developed. Under- 

 side black, reddish at the base ; terminal spines of the female geni- 

 talia red. Legs reddish, including the coxae ; femora and taris more 

 darkened ; bristles black. Wings as in L. rostratns, but the basal 

 band reaching always the end of the anal cell ; small cross-vein 

 without; pellucid spot. 



Type $ from North Nyasa, Karonga, May 26, 1909 (Dr. 

 J. B. Davcy) ; an additional specimen from West Nyasa, 

 Mulowe {Dr. II. S. Stannus). 



48. Litorrhynclms tollini, Loew (1863). (Plate L, 

 fig. 13.) 



Distinguished by the very elongate third antennal joint, 

 and the reddish tufts on the sides of thorax. The pattern 

 of the wings is very like that of Z. rostratns, but the small 

 cross-vein is usually enclosed in a pellucid spot, and the 

 basal band is very distant from the end of the anal cell. 



I am very doubtful if this species can be separated from 

 Z. scncgalensis, Macquart (1840); and my L. crythracus 

 (1906) seems to be also the same widely spread species. 



Two specimens from North Nyasa, Karonga to Fort 

 Hill, near Lufira River, May 80, 1909, and Mt. Waller, 

 September 1,1909 {Dr. J. B. Davey); another specimen 

 from West Nyasa, Chôma, May 1909 (Dr. H. S. Stannus). 



49. Litorrhynchus pcrplexus, sp, nov. 



Ç . Length of the body 11mm. ; of wing 13 mm. Distinguished 

 from the preceding by its smaller size and short third antennal joint. 



