MYDAS CLAVATUS. 



Plate XLIV. fig. 1. 



Order: Diptcra. Section; Notacantha, ia/r. Family: Mydasidae, ieacft. 



Genus. Mydas, Fabr. Latr, Midas, Weidemann. Musca, Vrury, Be Geer. 



Mydas Clavatus. Niger, abdominis segmento secundo aurantiaco, alis nigris. (Long. Corp. 1 unc. 3 lin.) 



Syn. Musca clavata, Drurj/,Ap]).vol. 2. (1773.) 



Bibio filata, Fabr. Maid. Ins. 2. 3-28. 1. (1787.) Syst. Antl. 60. 1. (Mydas f.) Weidemann Aussereur. 



Zweifl. Ins. 1. 240. 3. tab. ll.Jig. 3. Ditto in Nova Acta Nat. Curios, vol. 6. p. 'Z-pl. iJS.Jig.B. 

 Nemotelus asiloides, De Geer Mem. vol. 6. t. 29. f, C. 



Habitat : New York, and other parts of North America. 



Head black. AiitemiEe nearly the length of the thorax, black, slender, and knobbed at their 

 extremities. Thorax black and smooth. Wings coppery brown, very membranaceous, and not trans- 

 parent. Abdomen black, and composed of eight segments, the second being of a deep yellow ; which 

 colour extends only to its sides, the under part being black. Legs entirely black ; the hinder ones 

 being furnished with a strong spine at the tips of the tibiae, the middle ones having four small ones, and 

 the fore ones none. Each of the ungues has two small yellow scales (puvilli) placed underneath. 



TABANUS PLUMBEUS. 



Plate XLIV. fig. 2. 



Order : Diptera. Section : Tabaniens, Latr. Family : Tabanidse, Leach. 

 Genus. Tabanu.s, Linn, ^-c. 



Tabanus Plumbeus. Obscure coccinelleus, abdomine marginibus posticis pallidioribus, alis sublimpidis costa 



fuscii, antennis brimneo-rufis. (Long. Corp. I unc.) 

 Syn. Tabanus plumbeus, Drury, App. vol. 2. 



Tabanus ruficornis, Fabr. Syst. Ent. 789. 8. Syst. Antl. 96. 14. Weidemann Aiiss. Zw. Ins. 1. 112. 



Tabanus Amerieauus, Forster Novce Sp. Insect. Cent. 1. 100. 



Tabanus limbatus, Pal. Bauvois Ins. d'.ifr. §- d'Amer. Dipt. i. l.f. 2. 



H.4BITAT : New York, Virginia, &c. North America. 



Head ash-coloured. Eyes nearly black. Antennae red brown. Only one ocellus, placed a little 

 above the antennae. Proboscis almost equal in length to the depth of the head. Thorax dark greenish- 

 brown coloured ; having a white spot at the base of each wing. Abdomen dark brown colour ; each seg- 

 ment being on the under side margined with grey. Wings transparent ; anterior edges brown and 

 opake. Legs dark brown ; the middle ones having two spines at the tips of each of the tibiae. The 

 ungues have two small brown scales under them. Breast hairy and ash-coloured, but white on the 

 sides. 



TABANUS AMERICANUS. 



Plate XLV. fig. 3. 



Order ; Diptera. Section ; Tabaniens. Family : Tabauida;. 



Genus. Tabanus, Linn. S;c. 



Tabanus Americanus. Niger, abdomine canescente, alis fusco-nigris. (Long. Corp. circ. 11 lin.) 



Syn. Tabanus Americanus, Drury, App. vol. 2. (nee Forster.) 



Tabanus atratus, Fabr. Syst. Ent. 789. 9. Syst. Antl. 96. 16. Weidemann Auss. Zw. Ins. 1. 114. No. 3. 

 Tabanus niger. Pal. Bauv. Ins. Afr. et Amer. Dipt. t. l.f. 1. 

 Habitat : New York, and other parts of North America. 

 I O 



