FAMILY SIMULIIDAE . 165 



sexes, or hairy in one and spinulose in the other ; the claws are either 

 equal or unequal in length, and are always simple in structure ; the 

 empodium is rudimentary. 



The habits of the mature insects of this genus are similar to those 

 of the other blood-sucking Ceratopogoninae ; their early stages are 

 unknown, but will most probably be found in the same localities as 

 those of the other genera. 



One species J. strictonota, Kieffer, is described from Calcutta, but 

 it is not known whether it is a blood-sucker or not. Neave records 

 /. fulvithorax, Austen, from British East Africa ; it is believed to be 

 a blood-sucker. 



GENUS HAEMATOMYIDIUM, GOELDI 



Antenna with fourteen segments, the last ones elongate; palpi with 

 four segments, the second and third long. Wings with microscopical 

 pilosity intermixed with long hairs ; venation similar to that of Culi- 

 coides. Legs long, femora not thickened, and without spines; hind 

 metatarsi about twice as long as the succeeding segment. 



This genus was formed by Goeldi for a midge, commonly found in 

 the houses of the natives of Para, South America, by whom it is 

 called ' murium '. According to Goeldi the female is a blood-sucker. 

 A single species H. paraense, Goeldi, is known, but according to Austen 

 it is a true Ceratopogon (sensu restricto), and is probably identical with 

 C. phlebotomus, Williston. 



FAMILY SIMULIIDAE 



Small thick-set, hunch-backed flies, usually of a dark colour, with 

 short stout legs. The head is semicircular. Eyes round or kidney- 

 shaped, holoptic and with moderately large facets on the upper sur- 

 face in the male, dichoptic and with smaller facets in the female ; 

 ocelli wanting. Antennae short, cylindrical, and somewhat flattened, 

 as long as or a little longer than the head, and consisting of ten joints. 

 The two basal segments are distinct, but the remainder are more or less 

 closely united. Palpi short, cylindrical, recumbent and incurved, consisting 

 of four joints; the first short, the second and third equal in length, and 

 the fourth longer and thinner; the palpi are as a rule longer in the 

 female than the male. Proboscis short and stumpy, with well developed 



