UNIDENTIFIED SPECIES OF TABANUS. 



Tahanus sp. Nos. 1 and 2. — Following Mann's observations, Kollar 

 succeeded in finding freshly laid eggs of another species of Tahanus, 

 which was not determirted, in a damp meadow at Dornbach near 

 Vienna, of which, after nine days, similar larvae hatched as were 

 obtained from the egg masses from Wippach, of Tahanus quatuorno- 

 tatus. Kollar also found a parasitic wasp ovipositing in the Tahanus 

 eggs; this wasp was found to be specifically different from that ob- 

 tained from the eggs of quatuornotatus . 



At about the same time eggs of another undetermined species 

 were found by Hbfmann, quoted by Kollar, No descriptions are 

 given. 



Tahanus sp. No. 3. — Riley and Johannsen (1915) give a photo- 

 graphic illustration of the egg mass of an American species of Tahanus, 

 the name of which is not given (Plate 1 , Fig. 6) . 



Tahanus sp. No. 4. — (Hart's sp. a.) Two examples of larvas 

 of this peculiar species have been collected by Hart, from diverse 

 situations. One was taken under bark in woods near Urbana, Illi- 

 nois, April 6; the other, from a prairie ditch, in Kane County, Illinois, 

 which was swollen by a heavy rain. Hart's description is as follows: 



"Larva. — Length 19 mm., diameter 2.5 mm. Last antennal joint short and 

 very slender, epistoma not sulcate anteriorly, but with an elongate puncture. 

 Whitish, lateral pubescent stripes wanting, annuli much reduced and pale except 

 upon false feet. Prothoraxshining, with anterior opaque annulus; lateral areas as 

 long as the dorsal, their upper and lower thirds rather coarsely striate, middle third 

 smooth, with several punctures; ventral area smooth, middle groove with three 

 striae, dorsal area nearly smooth. Striae of upper lateral spaces of meso- and meta- 

 thorax and of dorsal and ventral areas of abdomen moderately coarse; those of 

 lateral area of abdomen somewhat finer; dorsal and ventral areas of mesothorax 

 with a few striae; of metathorax rather sparsely striate. All areas more or less 

 shining. On the anterior side of each dorsal false foot, at its outer end, an 

 opaque light brown elongate fleck. False feet shining and rather finely striated 

 on each side. No projecting spine posteriorly; only a narrow pale annulus on 

 last segment, at base of breathing tube." 



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