38 Miss G. Uicarclo on 



The species are very ditVicult to distinguish from eacli 

 other, all having very nearly allied characteristics ; the 

 specific characters seem to lie chiefly in the colouring ot" the 

 hristlos on tht* logs and on the colour of the femora and tibiai 

 and of their |)ul)escence. 



Table of Species. 



1. Legs l.liu-kisli L'. 



Lejrs reddish 8. 



2. Moustache black and yellow. Legs black, tibiiu 



paler at tiie base alttmanus, Wlk. 



'•). Femora black, reddisli or yellowisli below 4. 



Femora black below, red above fj. 



F'emora black on the inner side and sometimes on 



the outer side 0. 



Femora chietly blacli 7. 



4. Bristles on legs chiefly white tristrigatus, Loew. 



liristles on lej^s chietly black rubiginosiis, Gerst. 



Very large species ; male with four bristles on 



soutellum ; bristles on legs chiefly wliite. 



Wings short brevipennis, sp. n. 



Fore femora only, yellowish below. Legs with 



dense short wliite pubescence dmurus, Loew. 



"). Bristles on legs and on sides of abdomen all black ; 



only the femora with a black stripe below .... porrectus, "Wlk. 



6. Fore legs with long white pubescence cinernscens, liic. 



Foi*e femora with short black bristles below .... tceniopus, Bondani. 



7. Femora only red at base and apex ; bristles on 



legs chiefly black, some white ones on fore legs. ni<p-escens, sp. n. 



Asilus fraternus, placed in Kertesz's Cat. under this genus, 

 is a species of Philodiciis. 



The following species are unknown to me: — 



Alcimus CBthiopicvs, Bigot, from Abyssinia, and Alcimus 

 tiifris, Karsch, from E. Africa, Ijoth with blackish legs. 



Alcimus angiisdpennis, Loew, from the Cape, a ])aler var. 

 of Alcimus longurio, which is the same as A, a^amanus, Wlk. 



Alcimus sericans, Wied, from uidtnown locality. 



Alcimus mimus and ludens, Wied, from CJape and Nubia. 



Alcimus limhatus, Alacq., from Senegal. 



Alcimus alamanus, Walker. 



.0 List Dipt. ii. p. 428 (1849), et vii., Suppl. 3, p. 696 ITrnpanea] (1855) ; 

 * Loew, Dipt. SUd-Afrik. i. p. 134 (18G0). 



A/cimiis perlonr/us, AVlk. Ins. Saund. Dipt. i. p. 125 [Trupanea] (1851). 



Ak-intus longiirio, Loew, Ofvers. Kongl. Vet.-Akad. Fcirhandl. xiv. 

 1857, p. 300 (1858), &c. 



Walkei-'s type is a female from S. Africa {Dr. Smith)^ and 



