33 I 



INSECTA. 



Genus DCCLVII. Sericomyia, Latr. 



Antennae with their seta plumose, inserted at the dorsal 

 juncture of the second and third joints; last joint of the 

 antennae suborbicular. 



Sfi. 1 . Lafifionum. Latr. 



Inhabits Europe. 



Genus DCCLVIII. Vollccella, Geoff. Schseff. Latr. 

 Pterocera, Meig. 



Antennae with their last joint elongate; seta plumose, 

 inserted at the dorsal juncture of the second and third joint. 



Sfi. 1. Pelucens. Latr. 



Inhabits Europe. 



Genus DCCLIX. Evistalis, Latr. Fabr. Hemophi- 

 lus, Meig. Illig. 



Antennae contiguous at their base, their last joint broad- 

 er than long; seta (simple or slightly plumose) inserted 

 beyond the dorsal junction of the second and third joints ; 

 head anteriorly distinctly rostriform. 



Sfi. 1. jYarcissi. Fabr. 



Genus DCCLX. Helophilus. Elophilus, Meig. Il- 

 lig. Latr. 



Antennae contiguous at their base ; their third joint long- 

 er than broad; seta (simple or slightly plumed) inserted 

 beyond the dorsal juncture of the second and third joints; 

 head anteriorly distinctly rostriform. 



Sfi. 1. Tcnax. Latr. 



Inhabits Europe. 



Genus DCCLXI. Syrphus, of authors. 



Antennae separate at their base ; their last joint subor- 

 biculate; seta inserted beyond the dorsal junction of the 

 second and third joints; abdomen elongate-subquadratc, 

 gradually somewhat narrower towards its extremity. 



Sfi. 1. Variabilis. Panz. 



Inhabits Europe. 



Genus DCCLXII. Doros, Meig. Illig. 



Antennae separate at their base ; their last joint subor- 

 biculate; seta inserted beyond the dorsal juncture of the 

 second and third joints; abdomen clavate, contracted at 

 each side of its base. 



Sfi. 1. Conofiseus. 



Milesia conofisea. Fabr. 



Syrfihus coarctatus. Panz. 



Inhabits Europe. 



Genus DCCLXIII. So*va, Fabr. 



Antennae separate at their base; their last joint sub- 

 ovate; seta inserted beyond the dorsal juncture of their 

 second and third joints ; abdomen subovate trigonal j the 

 length double the breadth. 



Sfi. 1. Pyrastri. Fabr. 



Inhabits Europe. 



Stirfis 2. Head not anteriorly conic-produced ; antennae 

 about the length of the head, placed in a common eleva- 

 tion ; oval cavity on the nasal prominence ; wings deflexed 

 or slightly divaricating. 



Genus DCCLXIV. Paragus, Latr. 

 Antennae separate at their base; their two first joints 

 subequal ; seta simple, not distinctly articulated. 

 Sfi. 1. Bkolor. Latr. 



Genus DCCLXV. Psarus, Latr. Fabr. 

 Antennae inserted on a common elevation ; the second. 



joint larger than the first ; seta thick, styliform, distinctly 

 biarticulate. 



Sfi. 1. Abdominalis. Fabr. 



Stirfis 3. Head not anteriorly conic-produced ; antennae 

 very much longer than the head ; placed on a common 

 elevation; oval cavity on the nasal prominence ; wines de- 

 flexed. b 



Genus DCCLXVI. Chrysotoxum, Meig. Latr. 



Antennae subcylindric ; their last joint having a seta at 

 its base. 



Sfi. 1. Arcuatum. Latr. 

 Inhabits Europe. 



Genus DCCLXVII. Ceria, Fabr. Latr. Illig. Meig. 

 Antennae with their first and second joints forming an 

 oval mass terminated by a style. 

 Sfi. 1. Vesfiiformis, Latr. 

 Inhabits Italy and Barbary. 



Genus DCCLXVIII. Callioera, Meig. Panz. 



Antennae with their first and second joints forming an 

 elongate mass, terminated by a style. 



Sfi. 1. JEnea. Meig. 



Inhabits Europe. 



Stirfis 4. Head not anteriorly produced; nasal part 

 straight, not prominent ; antennae inserted separately, very 

 much longer than the head ; wings deflexed. 



Genus DCCLXIX. Ai'hritis, Latr. Microdon, Meig. 



Antennae with their third joint conic, elongate, its base 

 bearing a seta. 



Sfi. 1. Auro-fiubescens. Latr. 



Inhabits Europe. 



Stirfis 5. Head not anteriorly produced, nasal parts con- 

 cave or straight ; antennas inserted separately, very much 

 shorter than the head. 



Genus DCCLXX. Merodon, Meig. Fabr. Latr. 



Hinder thighs (of the male at least) large, very thick, 

 arcuated, points produced into a strong tooth; antennae 

 with their joints trigonal. 



Sfi. 1. Clavifics. Meig. 



Inhabits Europe. 



Genus DCCLXXI. Eumenos, Meig. 



Hinder thighs (of the males at least) large, very thick, 

 elongate-ovate, denticulated beneath ; antennae with their 

 last joint much compressed ; abdomen cylindric. 



Sfi. 1. Pifiiena. 



Mislesia fiifiiens. Fabr. 



Inhabits Europe. 



Genus DCCLXXII. Milesia, Latr. Leach. 



Hinder thighs (of the males at least) large, very thick, 

 elongate-ovate, denticulate beneath ; antennae with their 

 last joint much compressed ; abdomen trigonate. 



Sfi. 1. Annulatus. 



Syrfihus annulatus. Fabr. 



Inhabits Europe. 



Genus DCCLXXIII. Spilomyia, Meig. Hemophilus, 

 Meig. 



Hinder thighs (of the males at least) large, thick, elon- 

 gate, subcylindric ; antennae with their last joint short, sub- 

 ovate, much compressed. 



Sfi. 1. Imfiigera. 



Syrfihus Imfiiger. Rossi. 



Inhabits Europe. 



