Gyrinid^ 



81 



Dytiscus L. 



2641. marginalisL. 58-411 Can. N.Y. 



42. parvuliis Mann. 5(i-1.54 Alas. Lai). 



4.3. vexatus Shp. 82-643 Alas. 



44. circumcinctus Ahr. 11-67 Man. 



anxius Mann. 4.3-218 Alas, 



albionicus Mots. 59-166 Cal. 



fuscostriatus Mots. 59-167 Cal. 



Dytiscus L. 



2645. dauricus Gebl. 32-39 

 confluens Say. 34-440 

 (liffinis Lee. 50-212 

 oolighuki Khy. 37-74 

 franklini Kby. 37-77 

 ventralis ISIots. 55-79 

 46. harrisi Kby. 37-76 



Alas. L..Sup. 



[N.H. 

 L.Sup. 

 Can. 

 Can. 

 Alas. 

 Can.Ind.N.Y. 



Hydaticus Leach 17-69 



2647. stagnalis (Fab.) 87-191 

 cinctipennis Aube 38-191 

 ?americanus Shp. 82-654 

 ?niodestiis Shp. 82-650 



HYDATICIN.aS 



Hydaticini 



Hydaticus Leach 

 B.C. Ind. 2648. Isevipennis Thorn. 67-88 Red River. 



[Mass. 49. piceus Lee. 63-23 Mich. Ind. 



Red River. 50. bimarginatus Say 34-442 Va.Fla. |N.Y. 



■' N.A." fulvicoUis Aube 38-124 



Thermonectini 



Acilius Leach 17-69 



2651. semisulcatus Aube 38-132 B.C.Mich. 



Kans. N.Y. 



a. abbreviatus Mann. 43-219 Alas. 



b. oregonensis Cr. 73-402 Or. 



c. simplex Lee. 51-202 Cal. 



d. latiusculus Lee. 57-34 Cal. 



52. fraternus (Harr.) 28-156 Mass. Nfld. 

 .53. mediatus (Say) 23-33 N.H.N.Y.Va. 



raaccullochi (Kby.) 37-74 Can. 



Thermonectes Cr. 73-402 

 26.54. ornaticollis (Aube) 38-140 

 a. nigrofaseiatus (Aube) 38-136 

 55. basilaris (Harr.) 29-8 



a. intermedins Cr. 73-402 



b. latecinetus (Lee.) 51-203 



Thermonectes Cr. 



1^656. margineguttatus (Aube) 38-149 



Mex. W.L 

 L.Cal. 

 57. marmoratus (Hope) 32-284 Ariz. L.Cal. 



maculatus (Lee.) 54-221 

 ■58. peninsularis Horn 94-362 Cal. 



Graphoderes Thorns. 60-38 



2659. liberus (Say) 2.5-160 

 rugicollis (Kby.) 37-73 

 brunnipennis (Aube) 38-203 

 thoracicus (Harr.) 28-156 



60. einereus (L.) .58-412 B.C 

 Vfasciatocollis (Harr.) 28-156 



61. perplexus Shp. 82-695 "N.A." 



62. elatus Shp. 82-695 Red River. 



63. oecidentalis Horn 83-281 Cal. 



Mich. Mass. 



[Fla. 



Mass. 



Eretini 



Eretes Cast. 32-397 

 2664. stieticus (L.) 66-666 



Megadytes Shp. 82-704 



2665. fraternus Shp. 82-708 



Cybister Curtis 27-151 



( Troqiis II Leach 17-69) 



2666. olivieri Cr. 73-399 



GYRINOIDEA 



GYRINID^ 



Aube .38; Leconte 68; Regimbart .82, 07; Zaitzev OS; Ahlwarth 10 

 Enhydrini 



Dineutes MacLeay 25-30 

 (Ciichms Esch. 37-66) 

 (Cyplinus Kby. 37-78) 



2671. vittatus (Germ.) 24-.32 N..I.-Va. 

 opacus (Melsh.) 44-29 Ga. 

 72. robertsi I^eng 11-11 Ga. 



