262 MR. R. m'lachlan on a systematic 



2. H. IMMOTUS, Walker. (Ascal. immotus^ Cat. Brit. Mus. Neurop. 

 p. 425. — A. odiosus, Walk. op. cit. 426.) 



3. H. dicax. Walker. (Ascal. dicax, Walk, Cat. Brit. Mus. Neurop. 

 p. 423, 2 • — A., sinister. Walk. op. cit. p. 424, $ . — A. procax. Walk, 

 op. cit. p. 425, $.) 



Walker's so-called species seem to depend upon differences 

 in degrees of maturity. 



4. H. VERBOSUS, Walker. (Ascal. verbosus. Walk. Cat. Brit. Mus. 

 Neurop. p. 426, $ .) 



6. H. profanus. Walker. (Ascal. profanus. Walk. Cat. Brit. Mus. 



Neurop. p. 428, $ .) 

 This is only a preliminary view of the species of this genus. 

 It is possible that the first three may be only conditions of one. 



-.1. Genus Enoyoposts, n. g. 



Wings elongate, obtuse, little dilated, moderately broad; the 

 inferior pair nearly similar in shape, but shorter and narrower ; 

 anterior pair with a semicircular excision at the extreme base 

 of the inner margin, not appendiculate : network open ; trans- 

 verse branch of lower cubitus confluent with the postcosta in 

 all the wings. 



Antennce shorter than the wings ; club broad ; without verticil- 

 late hairs at the base, 



M/es very large ; the upper division more than twice the size of 

 the lower. 



Thorax slightly villose. 



Abdomen ( c? ) constricted at the base, afterwards very obese, 

 gradually diminishing to the apex ; furnished with a pair of 

 long, stout, cylindrical appendices directed downwards, ap- 

 proximated at the base and apex, the latter knobbed and ob- 

 tuse, directed upwards. (Short and obese in the $ .) 



Legs with the spurs of the posterior tibiao scarcely so long as 

 the first tarsal joint. 



Hah. Africa. 



Allied to Bubo, but remarkable for the strongly inflated ab- 

 domen of the (S , and differing in the form of the appendices. 



Species. 



1, E. FLAviLiNEA, Walker. (Acal. flavilinea. Walk. Trans. Ent. Soc. 

 Lond. ser. 2. vol. v. p. 197-) Antennae nigrse, ad basin flavaj. Frons 



