178 BOMBTLIID^. 



teeth are present. The development or otherwise of the pulvilli 

 in Argyramceba and Anthrax is likely to be inconstant, as it is 

 hard to believe that species of an intermediate nature do not 

 exist. After a more critical study of the species in this subfamily 

 at my disposal and an examination of additional specimens, it has 

 been possible to offer improved descriptions of some of my own 

 species. 



Genus HYPERALONIA, liond. 



Hyperalonia, Roiidani, Archiv. Zool. Modena, iii, p. 57 (1863) ; 



Osten-Sacken, Biol. Ceiit.-Amer., Dipt, i, p. 89 (1886) ; Brunetti, 



Rec. Ind. Mus. ii, p. 438 (1909). 

 Velocia, Coquillett, Can. Ent. xviii, p. 158 (1886). 



Genotype, according to Coquillett (J910), '■'' Stomoa.'ys morio, F. 

 {Anthrax ej-ythrocejphalus, F.), the 5th species, by present designa- 

 tion." 



This genus differs from the other genera by having four sub- 

 marginal cells ; in some non-Oriental species even five are present. 

 There are also four posterior cells. Further general characters 

 are : the face moderately projecting ; the third antennal joint 

 forming an elongate cone with a distinct suture demarcating it 

 from the style, which latter is nearly as long as the cone, with a 

 minute appendage at its tip. The posterior legs are as strong as 

 in Exoprosopa ; the fore tarsi indistinctly jointed, without stronger 

 bristles, but with delicate erect hairs on both sides ; ungues 

 minute. 



Range, South Europe, Asia, Nortli and South Africa, Australia, 

 and North and South America. 



As regards the Indian species of Hyperalonia, the general plan 

 of chsetotactic bristles is : several on the humeral calli (of different 

 lengths), a few prealar ones and about four very powerful spines 

 on the posterior calli, directed backwards, whilst there is always a 

 row of strong bristles on the hind margin of the scutellum. 



The vestiture of the legs consists generally of closely applied 

 scales on the femora (often less easily discerned on the middle 

 pair) and at least on the posterior tibise, being most conspicuous 

 on the hind pair. The front legs generally bear soft pubescence 

 only, the posterior femoi'a and tibiae with a row or rows of bristles. 



One species, H. Jiaviventris, Dol., is described at additional 

 length for the purpose of emphasising the generic characters. 



Table of Species. 



1. Wings dark blackish brown, without any con- 

 siderable clear or nearly clear part ; the clear 

 part confined to a well-defiued limited space 



in tristis and dives only 2. 



Wings with apical part and a considerable 

 portion of the posterior half, wholly or prac- 

 tically clear, but without any clear line of 

 demarcation 7. 



