CATALOGUE OF NORTH AMERICAN DIPTERA. I 5 I 



ochrolabis Loew, Cent., ix, 57.— N. Y. Also White Mts., N. H.— Slosson. 



pauciseta Felt, in Lintner's 12th N. Y. Report, 224, pi. vi, f. 12. — N. J. Larva 

 bred from decaying potatoes. 



perpusilla Walker, List, i, 106. — Martin Falls, Canada. 



polita Say, Long's Exped., App., 366; Compl. Works, i, 249. — N. W. Terr. 

 Wiedemann, Auss. Z\v., i, 70. Also N. J. — Smith Cat. 



prolifica Felt, in Lintner's 12th N. Y. Report, 226. — ]Mass. In greenhouses. 



punctata Walker, List, i, io6.^N. Amer. 



robusta Walker, List, i, 105. — ^lartin Falls, Canada. 



rotundipennis Macquart, Dipt. Exot., i, 2, 178. — Carolina. 

 Bellardi, Saggio, i, 13, oc. in ^lexico. 



sciophila Loew, Cent., ix, 56. — D. C. 



septemtrionalis Rubsaamen, Bibl. Zool., 1898, Lief. 4, 109, pi. vi, f. 12. — Green- 

 land. 

 Lundbeck, Dipt. Groenl., 11, 312, note. 



striata Rubsaamen, Berl. Ent. Zeitsch., 1894, n. — Me.x. 



tilicola OsTEN Sacken, quoted by Comstock, Ag. Report, i88t, with gall, and 

 this by Packard, sth Report U. S. Ent. Comm., 412. I do not find the 

 original desc, — it may not have been previously described. 



tridentata Rubsaamen, Bibl. Zool., 1898, Lief. 4, 107, pi. vi, f. 13, 24. — Greenland. 

 Coquillett, Proc. Wash. Acad. Sci., 11, 392, oc. in Lowe Inlet, Br. Col. 

 Lundbeck, Dipt. Groenl., i, 243, pi. v, f. 2 (validicornis). [Lundbeck.] 



tritici Coquillett, Ins. Life, vii, 406, figs., life hist., etc. — D. C. Larvae live at 

 the roots of young wheat plants. 



unicolor Say, Jour. Acad. Sci. Phil., vi, 153; Compl. Works, 11, 351. — Mex. 



validicornis Lundbeck, see tridentata. 



vulgaris Fitch, 2d N. Y. Report, 487 (Molobnis). — N. Y. Also White Mts.,— 

 Slosson. 



zygoneura Williston, Dipt. St. Vincent, 267, pi. viii, f. 2;^. — St. Vincent, W. I. 



MANOTA. 



Willistox, Dipt. St. Vincent. 260, 1896. 



Note. — The wing having a verj' incomplete venation, I cannot place the 

 genus in any of the established subfamilies. 

 defecta Williston, loc. cit., pi. viii, f. 14. — St. Vincent, W. I. 



HESPERODES. 



Coquillett, Ent. News, 1900, 429. 



Note. — This genus is said to be " near Hesperiniis," which Osten Sacken, 

 after seeing the type, placed in the Bibionidse. 

 johnsoni Coquillett, loc. cit. — Delaware Water Gap, N. J. 



CECIDOMYID.^. 



There are peculiar difficulties in the task of properly representing this family 

 in the present Catalogue. On account of the fact that many species make galls 

 on plants, we encounter here a mixture of botanical and zoological science, which 

 has tended to separate the study of the Cecidomyid?e from that of the other Dip- 

 tera. Only those who have made a special study of the family are at all informed 

 about it. Unfortunately, not one of the present generation of American ento- 

 mologists has given this special attention. 



To make matters ten-fold worse, the European specialists in Cecidomyidoe 



