634 Prof. Mario ee” Feport on a Collection of 
The stumps of veins described by Loew are often wanting. 
Two specimens from West Nyasa, Mulowe (Dr. H. S. 
Stannus). 
47. Litorrhynchus dilatatus, sp. nov. 
Q. Length of the body (of 2 specimens) 10-11 mm., of the wings 
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, rostratus; 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. Halteres 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 ZL. rostratus, but the basal 
band reaching always the end of the anal cell ; small cross-vein 
without pellucid spot. 
Type 2 from North Nyasa, Karonga, May 26, 1909 (Dr. 
J. B. Davey); an additional specimen from West Nyasa, 
Mulowe (Dr. H. S. Stannus). 
48. Litorrhynchus 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. rostratus, 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 
L. senegalensis, Macquart (1840); and my LZ. erythraeus 
(1906) seems to be also the same widely spread species. 
Two specimens from North Nyasa, Karonga to Fort 
Hill, near Lufira River, May 30, 1909, and Mt. Waller, 
September 1, 1909 (Dr. J. B. Davey); another specimen 
from West Nyasa, Choma, May 1909 (Dr. H. S. Stannus). 
49. Lntorrhynchus perplexus, sp. nov. 
9. Length of the body 11mm. ; of wing13mm. _ Distinguished 
from the preceding by its smaller size and short third antennal joint. 
