. Monographs of the Diptera of North America [microform] / prepared for the Smithsonian Institution by R. Osten Sacken. Diptera; Insects; Diptères; Insectes. BITTACOMOUPIfA. 315 bcvond the fifth; the two basal colls do not reach much beyond the niithlle of the wing (Tab. 11, lig. 20). Tlie peculiar nieinbraiuiceous, spatuhUe, ciliated appeiulagc, inserted at the foot of the halteres, and observable in I'ti/vhoj)- Ura, exists also in liittavomorijha. The relationship of liiUacutnorpha and Plychoptrra is very great and evident, all the difl'erence of the outward appearance notwithstanding. A ra
. Monographs of the Diptera of North America [microform] / prepared for the Smithsonian Institution by R. Osten Sacken. Diptera; Insects; Diptères; Insectes. BITTACOMOUPIfA. 315 bcvond the fifth; the two basal colls do not reach much beyond the niithlle of the wing (Tab. 11, lig. 20). Tlie peculiar nieinbraiuiceous, spatuhUe, ciliated appeiulagc, inserted at the foot of the halteres, and observable in I'ti/vhoj)- Ura, exists also in liittavomorijha. The relationship of liiUacutnorpha and Plychoptrra is very great and evident, all the difl'erence of the outward appearance notwithstanding. A rather large, transverse head, closely apidicd to the thorax, a pointed epistonui, long palpi, larg(! lips, a small antennal scapus, a sinuate thoracic suture, an almost obsolete collarc, a large mctathorax, the spatulate appendage, are charac- ters common to both genera. The male forceps of both have a similar structure ; the venation is almost the same ; if wc suppress tile fork, inclosing the second posterior cell of Ptuthopkra, we obtain the venation of Bitlacomorjiha. The only known species of the genus, li. clavipes, was first described by Fabricius, as Ptychoptera clavipeti, in 1781. Mr, Wt'stwood erected the genus Biftacomorpha for it {Lond. and E'Unb. Pln'los. Mag. 1835, p. 281). It has been found in North America only. The name is derived from Piltaoiis, a neuropterous insert, and fx'^p'pri, shape, on account of a slight resemblance between the two genera. Description of the species, 1. B« clavipes Fab. % and J.âNigra, mesonoti vitt4, metathorace, pleurisque albis ; pedibus albofasciatis. Black, a stripe on tbe mesonotum, tbe nr^tatliorax and the pleurae wbite ; feet banded with white. Long. corp. SvN. Tipula clavipes Fahricips, Spec. Insect, II, 404, 19 ; Mantissa Ins. II, 323, 21; Ent. Syst. IV, 239, 2r), Ptychoptera clavipes Fabricil's, Antl. 22,4.âWiedemann, Anss. Zweifl. :, p. .')9. Bittacomorpha clavipes Westwood, Lond. and Edinb. riiilos. Mag.
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