262 



MR. R. M'LACHLAN ON A SYSTEMATIC 



2. H. i m mot us, 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, 2 •) 



5. H. profanus, Walker. (Ascal. profanus, Walk. Cat. Brit. Mus. 

 Neurop. p. 428, 2 •) 



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. 



Genus Encyoposis, 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. 



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

 late hairs at the base. 



Eyes very large ; the upper division more than twice the size of 

 the lower. 



Thorax slightly villose. 



Abdomen ( <S ) 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 2 •) 



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

 the first tarsal joint. 



Hob. Africa. 



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

 domen of the 6 , 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. 19/.) Antennae nigrae, ad basin flavae. Frons 



