IS 



Hydrophilid.e 



Agabus 



l'.)242. ainliif,nius Siiy 2:i-i)0 and Fall 22-21 



Can.-Va. Man. 

 reticulatus t Aube 38-355 

 fimbriatiis Lcc. 51-214 

 2565, Fall prefers Melsheimer's name 

 hitosiis 

 43. subt'uscatiis Sharp 82-514 and Fall 22-28 

 Mass. III. 

 2545, citation should read 57-34 

 2583, read leptapsis not leptopsis 



Carrhydrus Fall 22-35 



10244. crassipes ' Fall 22-35 Alb. 



Copelatus 



19245. deliilis Sharp S2-.579 Fla. 



Rhantus 



2622 occurs in Europe also 



Colymbetes 



2629 and 2635 are varieties of 21)34, 

 Ziinni. 19-223 

 263(la. ina-qualis Horn = 2630a Zimni. Cat. ■ 



Colymbetes 



19246. exaratus Lee. is valid Ziinni. 19-223 

 262S = dahuricus Aube 38-227, Zinim. 

 Cat. 



2634 occurs in Europe also 



Dytiscus 



(Macrod)iles C. G. Thorns. 60-41) 

 E.xcept 2646, all our species belong to this 

 subgenus, fide Zimm. Cat. 

 2640 = cordieri Aube fide Zimm. Cat. 



19247. anxius Mann. 43-218 is valid fide Zimm. 

 Cat. Alas. 



264>5a. franklini Kby. 37-77 is a var.fide Zimm. 



Cat. Can. 



2645b. ventralisMots.55-79isa var.fide Zimm. 



Cat. Alas. 



Acilius 



( Uomwolyirus Gobert 74-441) 

 2653 belongs here fide Zimm. Cat. 



Graphoderes 



2661 and 2662 = zonatus Hoppe 95-33, 

 fide Zimm. Cat. Eur.Sib.H.B.T. 



2663 = austriacus Sturm 34-46, fide 

 Zimm. Cat. Eur. Sib. Cal. 



GYRINID^ 



Fall 22 



Dineutes 



2680, Citation should read Say 23-107 

 26S2, Citation should read Say 23-108 



Gyrlnus 



fratercidus Notni. 19 

 Fall 22-2S5 

 falli Notm. 19- 

 22-300 

 19248. woodruffi Fall 22-282 



49. marginellus Fall 22-283 



50. latilimbus Fall 22-285 



51. bif.arius Fall 22-286 



131 = 

 N.Y 



131 = 2707a 



2689 fide 



fide Fall 

 N.Y. 



S.I. 

 N.J. 



Mass.Me.N.Y 



B.C. 



Me.N.Y.Cal. 



Gyrinus 



19252. pachysomus Fall 22-288 

 53. lecontei Fall 22-291 



54. pleuralis Fall 22-292 



55. pugionis Fall 22-296 



56. wallisi Fall 22-302 



57. frosti Fall 22-303 



58. rockinghamensis Lee. 68 

 22-279 



2697 = 2699 fide Fall 22 _ _ 



2698 = 2696? fide Fall 22-293 

 2708 = 2707? fide Fall 22-296 

 2707a is a valid species fide Fall 22-299 



N.C. Ala. 

 Mass.Me.N.Y. 

 Ont. 



Wyo.Colo.Cal. 

 Mass.Me.N.Y. 

 Man. 



Me.N.Y.La. 

 -370 and Fall 

 N.C. 

 297 



HYDROPHILID^ffi 



Knisch 24 



Ochthebius 



19259. martini Fall 19-212 Cal. 



60. fossatus Lee. 55-362 and Fall 19-213 

 So. Cal. 

 tuberculatus Lee. 78-380 syn. fide Fall 

 19-213 . N.Mex. 



foveicoUis Lee. 78-381 syn. fide Fall 

 19-213 Fla. 



(Cofca/n« Rey 8.5-24) 

 (Prionochihebius Kuw.?) 

 2728. vandykei Knisch 24-31 



lapidicolus || Van D. 18-306 



Hydraena 



19261. angulicoUis Notm.21-146 N.Y. 

 62. vandykei Orch. 23-42 Cal. 



Helophorus 



2744. lecontei Knisch 24-88 

 obscurus II Lee. 51-210 

 2748 is doubtfully N.Am. 



Cal. 



Hydrochus 



19263. laticollis Notm. 19-132 N.Y. 



64. minimus Blateh. 19-317 Fla. 



65. brevitarsis Knisch 22-90 Mich. 



Berosus 



2770 = 2769a fide Knisch 22-111 

 2775 = 2774a fide Knisch 22-1 11 

 2782 = 2781 fide Knisch 22-111 

 2784a. pennsylvanicus Knisch 22-119 



Pa. 



