﻿622 Prof. Mario Bezzi's Report on a Collection of 



very conspicuous. Tlie plumula has a white fringe, as in 

 the following species. 



A single specimen i'roni North Nyasa, Kaporo, October 

 22, 1909 {Dr. J. B. Domj). 



27. Anthrax komogeneus, sp. nov. (Plate L, fig. 3.) 

 Ç . Length 7 mm. 



A black species with a wing pattern very like that of Hemijienthcs 

 morio, with tlie addition of a small dark cloud at the base of the 

 cubital fork. Head black and clothed with black hairs, only on the 

 anterior portion of the frons are some white scaly hairs. Thorax 

 with black hairs and sparse whitish pubescence, towards the sides 

 the hairs are whitish grey ; pleurae grey, with short dark hairs. 

 Haltères wliite, with a dark stalk. Squamulae of a quite white 

 colour and fringed with white hairs. Scutellum shining black, with 

 four pairs of black bristles, those of the middle crossed. Abdomen 

 black and with black hairs, the first segment with white hairs on 

 the sides ; hind margins of the segments with a thin border of silvery 

 scales, the apical segments being almost wholly silvery. Legs black, 

 the anterior tibiae dark yellowish. Wings black and hyaline ; the 

 black begins at the end of the first vein, and runs obliquely to the 

 apex of the anal cell, which is hyaline, going over the small cross- 

 vein and the base of the third posterior cell. The cloud at the base 

 of the cubital fork is very small. The prediscoidal spot is dark, not 

 hyaline. There are two recurrent stumps ; the upper branch of the 

 cubital fork is gently curved at the base ; anal cell open. 



Type Ç, from North Nyasa, Remero stream, November 

 24, 1909 (Dr. J. B. Davey) ; a single specimen. 



28. Anthrax spec, indet. 



A single damaged specimen of this interesting species, 

 from West Nyasa, Momberas District, November 1909 

 {Dr. H. S. Sfanvus). 



In size and appearance very like A. dijfnsus, and with a 

 similar wing-pattern, but the lower veins of the discal cell 

 are all infuscated. The stumps of the recurrent veinlets 

 are wholly wanting ; the upper branch of the cubital fork 

 is simply S-shaped ; the anal cell is closed. 



29. Anthrax eamptocladius, sp. nov. (Plate L, fig. 4.) 

 $ . Length (of 5 specimens), 7-9 mm. 



Closely allied to A. homogenevs, but easily distinguished by the 

 very different shape of the upper branch of the cubital fork. 



Head with black hairs, and very sparse pale pubescence on the 

 fore portion of the frons. Thora,x; ;m4 abdomen as A. homogeneua. 



