BIBIO. 137 



Black, clothed with black hairs. Wings limpid ; stigma blackish ; 

 veins towards the costa black, the rest white. Femora red. 

 Not rare. Vernal and autumnal. (E. S. I.) 



6. Johannis, L. S. N. ii. 976. 41 (1767); D. G.; Geoff.; Latr.; 

 Meig. ; Mcq. ; Gim. ; Zett. ; Loew. Pyri, F. -pracox, F. hyalina, 

 Meig. Kl. Zw. Pomona, Schr. Hard ? Schr. Niger ; Mas, nigro- 

 pilosus, alis albis, venis albis apud costam nigris, tibiis tarsisque rufes- 

 centibus; Fcem. alis subcinereis, venis pallide fuscis apud costam ob- 

 scurioribus. Long. 2^-3 ; alar. 5-6 lin. 



Black. Male. Clothed with black hairs. Wings white ; stigma and 

 veins towards the costa black, the other veins white. Tibiae and tarsi 

 reddish, the latter black towards the tips. Fern. Clothed with short 

 black hairs. Wings slightly greyish; veins towards the costa and 

 stigma brown, the other veins pale brown. 



Generally distributed. Its appearance is nearly contempora- 

 neous with St. John's day, whence its name. (E. S. I.) 



7. ferruginatus, L. S. N. ii. 976 (1767); F.; Gmel. ; Meig.; 

 Mcq. ; Gim. ; Loew ; Zetk.flavicaudis, D. G. -fulviventris ? Meg. ; 

 Meig. Niger ; Mas, nigro-pilosus, alis cinereis ad costam fuscescentibus, 

 abdomine albo-piloso, tarsis rufescentibus ; Fcem. alis subcinereis, venis 

 albidis apud costam fuscis, pedibus rufis. Long. 3^4 ; alar. 7-8 lin. 



Black. Male. Head and thorax clothed with black hairs. Wings 

 grey, brownish along the costa ; stigma dark brown ; veins black to- 

 wards the oosta, the rest pale brown. Abdomen clothed with white 

 hairs. Tarsi reddish. Fern. Wings greyish ; stigma and veins towards 

 the costa dark brown, the other veins whitish. Legs red. 



Common. A vernal species. (E. I.) 



8. lanigerus, Hoffm. ; Meig. Zw. i. 317. 14 (1818) ; Hal. 

 vernalis, Meig. ; Mcq. ; Zett. laniger, Meig. Zw. vi. ; Mcq. ; Loew. 

 Niger; Mas, nigro-pilosus, alis subcinereis ad costam fuscis, abdomine 

 albido-piloso, tibiis tarsisque rufis ; Fcem. alis subcinereis ad costam 

 obscurioribus, venis pallide fuscis apud costam obscurioribus, pedibus 

 rufis. Long. 2^-3 ; alar. 5-6 lin. 



Black. Male. Head and thorax clotted with black hairs. Wings 

 greyish, brown along the costa ; stigma dark brown ; veins towards the 

 stigma black, the other veins pale brown. Abdomen clothed with 

 whitish hairs. Tibiae and tarsi red. Fern. Wings greyish, a little darker 

 along the costa ; stigma and veins towards the costa brown, the other 

 veins pale brown. Halteres brown. Legs red ; tarsi darker ; tro- 

 chanters and knees black. 



Generally distributed. A vernal species. (E. S. I.) 



9. nigriventris, Hal. E. M. i. 157 (1833); Loew; Zett. albi- 

 pennis, Meig. lacteipennis, Zett. Niger ; Mas, albido-pilosus, capite 

 nigro-piloso, alis subcinerascentibus, venis pallide fuscis ad costam 



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