6 AMERICAN BLACK PLIES OR BUFFALO GNATS. 



Simulium Latreille — Continued. I'age. 



Group D. Table of species 47 



Simulium vietallicum Bellardi 48 



SimuHum meridionale Riley 49 



Simulium tamaulipense Townsend 51 



Simulium griseum Coquillett 52 



Simulium vittatum Zetterstedt 53 



Simulium piclipes Hagen 55 



Simulium virgatum Coquillett 57 



Simulium hunteri, new species 59 



Simulium glaucum Coquillett 60 



Group E. Table of species 61 



Simulium quadrivittatum Loew 61 



Simulium haematopotum, new species 62 



Addenda: 



Simulium forbesi, new species 63 



Simulium johannseni Hart 65 



Simulium meridionale Riley and its allies 66 



Catalogue of North American and Central American Simuliidse 08 



A list of the principal papers dealing with the life histories of American 



Simuliidse 69 



Index to genera and species 71 



ILLUSTRATIONS 



Page. 



Plate I. Anatomical details and wing venation of Simuliidae 72 



II. Legs and tarsal claws of Simuhidse 74 



III. Larval characters of Simuliidse 76 



IV. Respiratory filaments of pupse of Simuliidse 78 



V. Anatomical details of Simuliidse 80 



VI. Anatomical details of Simuliidse 82 



