Prodrome of a Monograph of the Tabanidae of the United States, Parts 1-2
Prodrome of a Monograph of the Tabanidae of the United States, Parts 1-2
C R Carl Robert Osten Sacken
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tropicus). It is not improbable that with a better knowledge of that group some cases of undoubted identity will be disclosed. All the original specimens of my descriptions, as well as all the varieties and aberrant specimens mentioned in my text, are to be found at the Museum of Comparative Zoology, in Cambridge, Mass. The most important contributions from abroad I received from the Entomological Society in Philadelphia, and from the Detroit Scientific Association ^ ; for both of which I retur...n my sincere thanks. OBSERVATIONS ABOUT THE ANALYTICAL TABLE OF THE SPECIES. 1. As the pubescence of the eyes, in female specimens especially, is sometimes very difficult to perceive, either being naturally scarce, or worn off, I have introduced the ocelli- gerous tubercle as an auxiliary charaxjter. I know of no North American Tabanus with a distinct ocelligerous tubercle and, at the same time, with glabrous eyes in both sexes ; so 1 'ATvhjToc, without callosity. « Diptera collected ia Florida, by Messrs.
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