. Monographs of the Diptera of North America [microform] / prepared for the Smithsonian Institution by R. Osten Sacken. Diptera; Insects; Diptères; Insectes. lOS OP NOUTII AMERICA. [part IV. ". ;H'^';i M - fonniiliiui nlxnit tlio thvfti fossil spo(;ii'rt may be gatherHtl from the artic!') ill tlif I. As Mr. l^oew lielieved i\\v anteiince of liis siieciiiiens of 'J'(inliiiiti j'idi/ilis to l)e injured at the tip (lie could count only 2-|-10 joints, whicli is the real nuiiiher, whereas lie expected that they should have 24-l'5, like the fossil species), he introd
. Monographs of the Diptera of North America [microform] / prepared for the Smithsonian Institution by R. Osten Sacken. Diptera; Insects; Diptères; Insectes. lOS OP NOUTII AMERICA. [part IV. ". ;H'^';i M - fonniiliiui nlxnit tlio thvfti fossil spo(;ii'rt may be gatherHtl from the artic!') ill tlif I. As Mr. l^oew lielieved i\\v anteiince of liis siieciiiiens of 'J'(inliiiiti j'idi/ilis to l)e injured at the tip (lie could count only 2-|-10 joints, whicli is the real nuiiiher, whereas lie expected that they should have 24-l'5, like the fossil species), he introduces the description of the anteiime of the fossil species thus (1. c. p. 4t)l>) : 'â 1 found the antenna- of two of the fossil species 2-|-1'^ jointed, while I could count only 12 joints on the tlagellum of the third; all the 8i)ecies have the two joints of the scapiis short aiiil I pedes, like J'JIcp/inntomi/la, have 15-jointed antennjc (an unusual number, as we know, among the Ti/i. hnri/Kil/ii) ; tlie tliini joint is stiikingly incrassated, and, as I liave shown above, represents the coalescence of two joints ; the fossil spetdes, like Klf/ilinntoiiii/lii, liave verticils on all the joints, whereas in , only the two last joints are provided with long hairs ; the rest of tlie description of the of the fossil specii's applies ecjually well to the antonna* of Kle/iliaiilowj/ia. Another passage is liki^wise important: "The venation (of (/ilis) is also peculiar in several respects; I advert especially to the direction of the veins in the vicinity of the root of the wing and to the connection between the ante- penultimate and the {)enultiiiiate longitudinal veins ; the latter does not take place in the fossil species in a similar degree ; in these species the first longitudinal vein does not coalesce towards its end with the costa (as it does in T. frnijilis) and the great cross-vein is farther removed from the root of the ; If we
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectd, booksubjectinsects
