INSECT A 335 



divaricate in by far the most, in some parallel, deflected. Eyes 

 very large, contiguous in males. Tarsi with three pulvilli. 



a) Proboscis of the length of the head or shorter than the head, bila- 

 biate at apex. 



*) Antenna longer than head. 



Sub-genera : Hexatoma MEIG., Hcematopata MEIG. Wings de- 

 flected, parallel. Ocelli none. 



Sp. Hcematopota pluvialis, Tabanus pluvialis L., PANZER, Deutschl. Ins. 

 Heft 13, no. 23 ; four lines long, blackish, thorax with white stripes, 

 wings clouded grey ; the female pricks sharply, especially in warm rainy 

 weather ; very common all over Europe. 



Sub-genera : Chrysops MEIG., Silvius MEIG. Wings divaricate. 

 Ocelli three. 



Sp. Chrysops ccecutiens, Tdban. ccecutiens L., DUM^B. Cons. gn. s. L Ins. PI. 

 47, fig. 8. 



** Antennae of length of head, (ocelli none, wings divaricate). 



Sub-genus : Tabanus MEIG. 



Sp. Tabanus bovinus L., PANZER, Deutschl. Ins. Heft 2, no. 20 ; Cuv. R. 

 Ani. ed. ill., Ins. PL 171, fig. 2, &c. This species has naked eyes; in 

 other species the eyes are haired. Comp. ZELLER in OKEN'S Isis, 1842, s. 

 812 823. The larvae live under ground : the pupa state lasts in Tabanus 

 bovinus about four weeks. DE GEES Ins. VI. pp. 214 219, PI. 12, 

 figs. 6, 7. 



5) Proboscis elongate (of length of head and thorax), acuminate. (Ocelli 

 mostly three, in some none.) 



Sub-genera : Pangonia LATR., MEIG. (previously Tanyglossa 

 MEIG.), Rhinomyza WIEDEM. 



Family XII. Notacantha s. Odontomyiidce. Antennae with 

 several joints, four or more being terminal, very often joined to 

 brm an annulate body cylindrical or conical. Setse of haustellum 

 bur. Palps small, clavate. Tarsi with three pulvilli. Scutellum 

 m many armed with spines or teeth, whence the family name. 



Thorn-lacks, armed files. REAUMUR gave to some species of this 

 family the name of mouches armes, which GEOFFROY (Hist, des In- 

 sectes qui se trouvent aux environs de Paris, n. 1762, p. 476) ren- 

 dered by Stratiomys, to which name well-founded objections may be 

 made (ZELLER, OKEN'S Isis, 1842, p. 828), but since it was adopted 

 by FABRICIUS, it is now in too general use to permit its rejection 



