216 DIPTERA OF NORTH AMERICA. [PART IV. 



of which I have seen the original specimen, is undoubtedly an 

 Ula. 



The genus Ula (from ovfcoj, soft) was first introduced bj Mr. 

 Haliday, in 1833 (Entom. Magaz. I, p. 153), for U. pilosa Stan. 

 (U. mollissima Hal.). Macquart took this species for a Cylin- 

 drotoma (G. macroptera Macq. ; compare, however, about this 

 synonymy, the remark under the head of the Cylindrotomina 

 below). Mr. Lioy, overlooking the existence of the genus Ula, 

 established for this species the genus Macroptera (Lioy, Atti Inst. 

 Ven. 3d ser. 1863, Yol. IX, p. 224). The position of Ula among 

 the Amalopina (Pediciseformia olim), based upon the pubescence 

 of its eyes, the position of the subcostal cross-vein, etc., has been 

 pointed out by me in 1859 (Proc. Acad. Nat. Sci. Philad. 1859, 

 p. 199). 



The larvae inhabit fungi, and have been observed by Stannius 

 {Beitr. z. Entom. Schl. p. 205) and Perris (Ann. Soc. Entom. de 

 France, 1849, p. 331, Tab. VII, fig. 4). Stannius, who found 

 the larva of Ula pilosa in an Agaricus, merely says that it is very 

 like that of Limnooia xanthoptera (compare above, p. 86). 

 Perris found the same larva in Hydnum erinaceum. According 

 to his account it has along the sides short, erect reddish hairs ; in 

 other respects, its characters seem to agree exactly with those of 

 the other tipulideous larvae. The pupa state was assumed under- 

 ground. 



1. IT. elegans, n. sp. £. — Cinerea, abdomine fusco ; alis fusco- 



maculatis. 

 Grayish ; abdomen "brownish ; wings spotted with brown. Long. corp. 



0.26. 



Head gray, palpi brown ; antennas brown, paler at the base. 

 The black ground-color of the thorax above is entirely concealed 

 under a thick gray bloom ; stripes hardly perceptible ; pleurae 

 slightly hoary. Halteres yellowish. Abdomen pale brown ; last 

 segment paler ; ovipositor short, broad, curved. Feet brownish, 

 darker towards the end. Wings with a brown spot on the origin 

 of the praefurca, a brown band between the costa and the fifth 

 vein, along the central cross-veins ; brown clouds at the tip of the 

 first longitudinal vein and at the inner end of the second and 

 third posterior cells ; fifth longitudinal cell margined with brown, 

 especially towards the tip. 



