BOMBYLIDAE. 25 



PsilocepJiala Zett,, which does not appear to be well founded, should 

 be admitted, some species with naked faces would be located in it. 



FAM. XXI. BOMBYLIDAE. 



Charact. Three basal cells much prolonged ; anterior intercalary vein 

 present almost without exception, the posterior always wanting ; 

 third joint of the antennae simple; empodium quite rudimentary. 



This, again, is a family exceedingly rich in the most varied 

 forms. A distribution into several tribes would therefore be very 

 useful ; the two sections hitherto adopted, one of which comprises 

 the genera grouped round the genus Bombylius, having a long 

 proboscis, while the second consists of genera more allied to the 

 genus Anthrax, having a short proboscis, do not appear sufficient 

 to embrace all the forms which have hitherto been discovered. I 

 am unable to give a better distribution, and I think it will not be 

 possible to do so until the number of sections is increased to at 

 least five or six. The genera of Bombylidce are as follows: BOM- 

 BYLIUS Linn., EURYCARENUS Loew, TRIPLASIUS Loew, SYSTOZCHUS 

 Loew, SPARNOPOLIUS Loew, DISCHISTUS Loew (= Bombylisoma 

 Rond.), PARISUS Walk., CHORISTUS Walk., HETEROSTYLUM Macg., 

 LASIOPROSOPA Macq., ADELIDEA Macq., ACREOTRICHUS Macq., 

 APATOMYZA Wied., THLIPSOMYZA Meig., AMICTUS Wied., MEGA- 

 PALPUS Macq., PHTHIRIA Meig., CYCLORHYNCHUS Macq., DASYPAL- 

 pus Macq., CROCIDIUM Loew, GERON Meig., APOLYSIS Loew, OLI- 

 GODRANES Loew, MuLio Latr. (= Glossista Rond.), CHALCOCHITON 

 Loew, CALLOSTOMA Macq., SERICOSOMA Macq., TOXOPIIORA Meig., 

 ENICONEURA Macq., LEPIDOPHORA Macq., CORSOMYZA Wied., ECLI- 

 MUS Loew, SYSTROPUS Wied., DOLICHOMYIA Wied., Usio Latr., 

 PLATYPYGUS Loew, CYRTOSIA Perr. , PLEAS Latr., CYLLENiAZortr., 

 LAGOCHILUS Loew, ANISOTAMIA Macq., LOMATIA Meig., ONCODO- 

 CERA Macq., PLESIOCERA Macq., LIGYRA Neivm. , ANTHRAX Scop., 

 ARGYROMCEBA Schin., NEURIA Newm., COMPTOSIA Macq., LITO- 

 RHYNCHUS Macq., SPOGOSTYLUM Macq., ENICA Macq., TOMOMYZA 

 Wied., ARGYROSPILA Rond., EXOPROSOPA Macq., AUTONIA Loew. 



The N. A. Bombylidce which I have seen may be distributed 

 amongst the following genera: 1. BOMBYLIUS Linn. , 2. SYSTCECHUS 

 Loew, 3. SPARNOPOLIUS Loew, 4. LEPIDOPHORA Westw., 5. TOXO- 

 PIIORA Meig., 6. GERON Meig., 7. SYSTROPUS Wied., 8. PLOAS 



