44 DIPTERA 



in the former, but the spaces between the verticels almost bare as in the latter; differs from each in the 

 much shorter second segment of the antennae which in only slightly longer than wide. Antennae of cT 

 rather robust, submoniliform on the basal half, first six segments only slightly longer than wide, the 

 remaining segments increasing in length and decreasing in diameter towards the apex, the antepenultimate 

 is half the length of the penultinate ; verticels composed of numerous very long bristly hairs except on the 

 last segment; antennae of 9 nearly cylindrical, the segments gradually increasing in length to the apex 

 scarcely thickened at the insertion of the verticels, which consist of a few rather short bristly hairs, 

 proboscis about one and one half times as long as height of head, palpus inserted near three-fourths of its 

 length, of 4 segments; first tarsal segment much longer than the second; venation as in Culex. 



Geographical distribution of species. — A single species only known at present, 

 i. E. underwoodi, Underwood, Canad. Ent. 272 (1903) (North America). 



ADDENDA 



Genus ETORLEPTIOMYIA, Theobald 



Etorleptiomyia. Theobald, Gordon Coll. Lab. Report p. 71 (1904). 



Characters. — Head clothed with a mixture of narrow-curved scales, upright forked ones and 

 small loose flat scales all over; antennae scaly on the basal joints. Thorax with scales of mesonotum 

 narrow and curved, those of the scutellum flat and small. Abdomen clothed with flat scales. Wings with 

 very marked heart-shaped scales, on the basal halves of the second, fourth, fifth and sixth veins; on the 

 first long vein, base of second and fourth also are more or less Mansonia-like scales and along costal 

 border also, scales on the apical halves of the veins pedunculated, clavate, peduncles very short; costa 

 spiny ; fork-cells moderately long. 



This forms a very distinct genus, easily told by the curious heart-shaped scales on the wings. The 

 proboscis seems very weak. 



The Mansonia-like scales are not exactly as in that genus, but approach them very closely. 



Geographical distribution of species. — A single species only has so far been found in'the 

 Sudan. 

 1. E mediopunctata, Theobald, Gordon Coll. Lab. Report p. 71 (1904) (Sudan). 



