DOLICHOrODIDAE. 115 



Liiancalns. 



Loew, Ncue Beitr. V, 1857; Monogr. II, 198. 



*genualis Loew, Neue Beitr. VIII, 70; Monogr. II, 199. -- Middle 



States. 

 *querulus 0. Sacken, Western Dipt, 318, -- Sonoma Co., California. 



Scellns. 



Loew, Neue Beitr. V, 1857; Monogr. II, 200. 



*avidns Loew, Monogr. II, 207. - - Fort Resolution, Huds. B. Terr. 

 *exustns Walker, Dipt. Saund. 211 (Medetents); Loew, Neue Beitr. 



VIE, 71; Monogr. II, 203. -- Middle States; Illinois. 

 *ftlifer Loew, Monogr. II, 209. - - Fort Resolution; Huds. B. Terr. 

 *spiniinaims Zetterstedt, Dipt. Scand. II, 445 (Hydro^horus) ; Loew, 



Monogr. II, 205. - - Fort Resolution, Huds. B. Terr. 

 Hydrophoms notatus Zetterstedt, Ins. Lapp. 701 [Lw.]. 



*monstrosus 0. Sacken, Western Dipt., 319. - - British Columbia. 



* vigil 0. Sacken, Western Dipt., 318. - - Sierra Nevada, California. 



Hydrophoms. 



Fallen, Dolichopod. 1825; Wahlherg, OefV? of k. vet. akad. forh. 1844; 



Loew, Monogr. II, 211. 



*aestniim Loew, Centur. VIII, 60. -- Newport, R. I. 



* cerutias Loew, Centur. X, 65. - - Texas. 

 *innotatus Loew, Monogr. II, 212. - - Sitka. 



*parvus Loew, Centur. II, 67; Monogr. II, 216, - - Pennsylvania. 



*pirata Loew, Neue Beitr. VIII, 71, 1; Monogr. II, 214. - - Penn- 

 sylvania. 



*viridiflos Walker, Dint. Saund., 212. -- North America. (I refer to 

 this species so specimens from Massachusetts.) 



Observation. The following species, described as Mcditenta, belong, in 

 part at least, to Hydrophonts; those of Mr. Walker's are discussed by Mr. Loew 

 in Monogr. II, 215. Mr. Say's two species I do not find mentioned in Mr. Loew'a 

 Monogr. The description of all these species are reproduced in the Appendix to 

 Monogr., Vol. II. 



alboflorens Walker, List, etc. Ill, 656. Nova Scotia. 



ohrysologiis Walker, List, etc. Ill, 655. - - Huds. B. Terr. 



exiistus Walker, Dip*. Saund., 211. -- North America. 



grlaber Walker, List, etc. Ill, 655. - - Huds. B. Terr. 



lateral is Say, J. Acad. Phil. VI, 169, 1; Compl. Wr. II, 362. 



Indiana. 

 pimctipcuiiiis Say, J. Acad. Phil. VI, 170, 2; Compl. Wr. II, 3(52. 



Mexico. 



