CATALOGUE OF NORTH AMERICAN DIPTERA. 1 63 



nodulus Walsh, Proc. Ent. Soc. Phil, iii, 599 (sah'cis-nodiilus).— Rock Id., Ill; 



gall on Salix longifolia. 

 nucicola Osten Sacken, Trans. Amer. Ent. Soc, iii, 53. — N. Y. ; in the husks of 



nuts of Hicoria. 

 ocellaris Osten Sacken, Mon. N. A. Dipt., i, 199. — D. C. ; larva in depression on 



under side of leaf of Acer rubrum. 



Note. — Comstock, Rept. Dept. Agric, 1881-2, 202, pi. xvii, describes the 

 adult as a Sciara. But Mik, in Verh. Zool.-bot. Ges., 1883, 190-192, con- 

 siders this an error of rearing, the Sciara coming from the earth in the 

 breeding cage. The same view is held by Brauer, Zweifl. d. Kaiserl. Mus., 

 Ill, 46, and by Osten Sacken, 2d edit, of his Characters of Larvae of 

 Mycetophilidae, Heidelberg, 1886, postscript, p. 27. 



N. J.— Smith Cat.; Mich.— J. M. A. 

 pellex Osten Sacken, Mon. N. A. Dipt., i, 199. — D. C. ; galls on leaves of Frax- 



inus americana. N. J. — Smith Cat. 

 persicoides Osten Sacken, Mon. N. A. Dipt., i, 193; Cat., 216, note.— D. C. ; on 



Hicoria. N. J. — Smith Cat. 

 poculum Osten Sacken, Mon. N. A. Dipt., i, 201 ; Cat., 216, note (probably in- 



quilinous in the gall of a Cynipid of Quercus). — D. C. 

 Fitch, 2d N. Y. Rept., No. 40, " Oak Spangles." 



N. J.— Smith Cat. 

 pomum Walsh and Riley, Amer. Ent., i, 106, f. 85, gall (vitis-pomum). — 111.; 



on Vitis cordifolia. 

 Riley, 5th Mo. Rept, 114-116, figs, and notes. 



N. J.— Smith Cat. 

 pudibunda Osten Sacken, Mon. N. A. Dipt., i, 202. — D. C. ; on leaves of Car- 



pinus caroliniana. 

 racemicola Osten Sacken, Mon. N. A. Dipt., i, 196. — D. C. ; larvje among ra- 

 cemes of Solidago. 

 rigidae Osten Sacken, Mon. N. A. Dipt., i, 189, gall desc. and name changed. 

 Fitch, Amer. Quart. Jour. Agric. and Sci., i, 263 (salicis, preoc). — N. Y. ; 



makes a swelling at the tip of twig of Salix rigida and liicida. 

 Walsh, Proc. Ent. Soc. Phil., iii, 595, abstr. of Fitch. 



N. J.— Smith Cat. 

 salicifoliae Osten Sacken, Proc. Ent. Soc. Phil., vi, 220. — Canada ; on Spircca 



salicifolia. 

 salicum Cockerell — the gall so mentioned is that of a sawfly of the genus Pon- 



tania, with "little or no doubt"; — Ckll. in lift. 

 sanguinolenta Osten Sacken, Mon. N. A. Dipt., i, 192. — D. C. ; on Hicoria. 



N. J.— Smith Cat. 

 serotinae Osten Sacken, Trans. Amer. Ent. Soc, iii, 346. — N. Y. ; on Pniiius 



serotina. N. J. — Smith Cat. 

 symmetrica Osten Sacken, Mon. N. A. Dipt., i, 200. — D. C. ; on Quercus. 

 triticoides Walsh, Proc. Ent. Soc. Phil., iii, 598; vi, 225 (salicis-triticoidcs). — 



Rock Id., III. ; on Salix cordata. 

 tubicola Osten Sacken, Mon. N. A. Dipt., i, 192; Cat., 216, note. — D. C. ; on 



Hicoria. 



N. J.— Smith Cat. 

 tulipiferae Osten Sacken, Mon. N. A. Dipt., i, 202. — D. C. ; on Liriodendron. 



N. J.— Smith Cat. 

 umbellicola Osten Sacken, Trans. Amer. Ent. Soc, in, 52 and 347. — N. Y. ; N. 



J. ; on Samhucus racciiiosa. among the umbels. 



