NOTES. 227 



74. Talam^s rigropunctatus. This is a regular Therioplectes, the 

 eyes are pubcscont, and not glalirous, as mentioned iu the Saggio etc. 

 Wiedemann notices the ocelligorous tubercle ! 



75. Tabanus. Compare Loew, in the Verh. Zool. Bot. Ges. 1858, 

 p. 573—612; a paper on the european species. 



I have taken great pains, in Paris and in Vienna, to verify my 

 identifications of Macquart's and ^Yiedemann's descriptions of Tahanus 

 and I have had the satisfaction of finding them justified in all instances, 

 with the single exception ot T. sidcifroits ^Nlacq. In examining Wiede- 

 mann's and Winthem's collections in Vienna, great care should be taken 

 to discriminate the true types, from specimens that are not types, even 

 when labelled in Wiedemann's own handwriting. I have explained in 

 the Preface, some facts bearing on the distribution of the types in 

 those collections. The types ot Wiedemann's N. A. Tabani are now 

 all in Winthem's collection. The Tabani in Wiedemann's collection are 

 sometimes wrongly named. Thus T. Beimcardtii is represented by three 

 specimens, which are not that species at all; Wiedemann described a 

 female with spotted wings; those three specimens are males and have 

 immaculate wings. The true type is in Winthem's collection. In the 

 latter collection, there are likewise several wrongly named Tabani, of 

 course, not types. T. zoncdis is labelled T. pavipes Wied. with a 

 query; the type of Wiedemann's description is in Copenhagen. T. fusco- 

 imnciatus IMacq. is labelled variegatus Fab. etc. 



After having gone through the labor of examining so many types 

 of earlier writers, I have become more than ever convinced of the 

 necessity of basing our nomenclature on rccorpiizahle deftcriptioua and 

 not merely on typical specimens. And for this reason I have preferred 

 to leave the nomenclature of my monograph, as much as possible, 

 undisturbed, until another entomologist is in a position again to subject 

 the whole genus to a thorough revision. 



76. Tabanus abdom'nalis Fabr. is represented in the Museum of 

 the Jardin des Plantes by two specimens, both of which have the first 

 posterior cell closed, thus confirming the view I took of the synonymy 

 in my Prodrome. 



77. Tabanus catenatus. As I suspected in my Monograph, T. 

 catenatus Walker is represented in the Brit. Mus. by specimens belonging 

 to two diflferent species; but it turns out upon examination of these 

 specimens, that neither of them is my T. catenatus. One of (hem is 

 the pale-colored variety of T. turhidus Wied., the other is T. (ji'jantcus 

 (lineatus F.). 



Thus T. catenatuPi Walker must be cancelled; T. recedens of the 

 Brit. Mus. is my catenatus; but W'alker's description (cinercns etc.) 

 is not recognizable; my mention of it in Prodr. II, p. 434 was based 

 upon a recollection, dating from my visit in the Museum in 1859. The 

 species may remain as catenatus 0. S. 



78. Tabanus hirtioculatus. I have seen the original specimen in 

 Mr. Bigot's collection and do not doubt the correctness of the synonymy. 



