680 



LIST OF DIPTERA. 



setis nullis. Metatarsus non abbreviatus. Alae fulvae, apice mar- 

 gineque postico nigro-fuscae. Mas. — Sexualia parva, simplicia. 

 Fcem. — Oviductus obconicus, acuminatus. 



Asilus, Loeiv, Linn. Ent. iv. 132. 



Bright and deep coloured, large or very large species. Mystax 

 with rough hairs, tawny or ferruginous, of one colour. Proboscis 

 especially long and pointed. First and second joints of the antenna? 

 with short hairs. Thorax ratber flat, with short hairs; the bristles 

 short, and not extending beyond tbe middle. Abdomen bare ; in- 

 cisures without bristles. Metatarsus not shortened. Wings tawny, 

 with blackish brown tips and hind borders. Male. — Sexualia 

 small, simple. Fern. — Oviduct obconical, acuminated. 



66. Asilus barbarus. 



Ferrugineus ; abdomen atrum, punclis laleralibus albis ; femora 

 nigra ; alee flavce, margine postico fusco maculato ; halleres 

 fusci. 



Asilus barbarus, Linn. Sgst. Nat. 1007,3. Meig. Klass. 245,2; 

 Zweifi. ii. 308, 3. Macq. Hist. Nat. Dipt. i. 303, 1. Expl. 

 Sci. Alg. iii. Ins. 439, 70. Loeio, Linn. Ent. iv. 132, 65. 



South Europe. North Africa. 



67. Asilus crabroniformis. 



Abdomen antice atrum postice Jlavum. 



Asilus crabonifoimis, Linn. ; Oken, Lehrb. Naturgesch. iii. 488. 

 Dum. Cons. Gen. Ins. pi. 46, f. 10. Maeq. Hist. Nat. Dipt. 

 i. 303 ; Expl. Sci. Alg. iii. Ins. 439, 71, pi. 2, f. 8. Dahlb. 

 Skand. Ins. 308, 208. Zeller, Isis, 1840, 48, 1. Zelt. Dipt. 

 Scand. i. 165, 1. 



Europe and a great part of Asia. Australia. 



a. — c. England. From Mr. Stephens' collection. 



Group 12. Rhadiurgus. 



Corpus mediocre, ciuereo-nijrrum. Facies nigra, nilida, apud 

 oculos alba. Abdomen nudum ; iucisura? setis nullis. Mas. — 

 Sexualia mediocria ; forceps margine postico valde inciso ; penis 

 acumedio pra? tseteris elongato. Fcem. — Abdomen praesertim planum. 

 Oviductus brevis, obtuse obconicum, subtus compressum. 



Rhadiurgus, Loew, Linn. Ent. iv. 133. 



Body grayish black, of moderate size. Face black, shining 



