Gyrinid^ 



81 



Dytiscus L. 



2641. niarginalis L. 5S-41 1 Can. N.Y. 



42. parvulus Mann. .56-1.54 Alas. Lab. 



4.3. vexatus Shp. 82-64S Alas. 



44. circumcinctus Ahr. 11-67 Man. 



anxius Mann. 4.3-21S Alas, 



albionicus ]\Iots. 59-166 Cal. 



fuscostriatus Mots. 59-167 Cal. 



Dytiscus L. 



2645. dauricus Gebl. 32-39 

 confluens Say. 34-440 

 diffinis Lee. 50-212 

 ooligbuki Kby. 37-74 

 franklini Kby. 37-77 

 ventralis Mots. 55-79 

 46. harrisi Kby. 37-76 



Alas. L.Siip. 



[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. S2-654 

 ?modestus Shp. 82-650 



HYDATICIN.ffi 



Hydaticini 



Hydaticus Leach 

 B.C. Ind. 2648. tevipennis 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." fulvicollis Aube 38-124 



Thermonectini 



Acilius Leach 17-69 

 2651. semisulcatus Aube 38 



132 



abbreviatus Mann. 



B.C. Mich. 

 Kans. N.Y. 

 43-219 Alas. 



b. oregonensis Cr. 73-402 Or. 



c. simplex Lee. 51-202 Cal. 



d. latiuseulus Lee. 57-34 Cal. 



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



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



maccullochi (Kby.) 37-74 Can. 



Thermonectes Cr. 7.3-402 

 2654. ornaticollis (Aube) 38-140 

 a. nigrofasciatus (Aube) 38-136 

 55. basilaris (Harr.) 29-8 



a. intermedius Cr. 73-402 



b. latecinctus (Lee.) 51-203 



Thermonectes Cr. 



2656. raargineguttatus (Aube) 38-149 



Mex. W.I. 

 L.Cal. 

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



maculatus (Lee.) 54-221 

 .58. peninsularis Horn 94-362 Cal. 



Graphoderes Thorns. 60-38 



26.59. liberus (Say) 2.5-160 Mich. Mass. 



rugicollis (Kby.) 37-73 [Fla. 



brunnipennis (Aube) 38-203 



thoracicus (Harr.) 28-156 



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

 ?fasciatocollis (Harr.) 28-156 



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



62. elatus Shp. 82-695 Red River. 



63. occidentalis Horn 8.3-281 Cal. 



Eretini 



Eretes Cast. 32-397 

 2664. stieticus (L.) 66-666 



Megadytes Shp. 82-704 



2665. fraternus Shp. 82-708 



Cybister Curtis 27-151 



(Tragus \\ Leach 17-69) 



2666. olivieri Cr. 73-399 



NY. Va. 



GYRING IDEA 



GYRINID^ 



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

 Enhydrini 



Dineutes MacLeay 2.5-30 

 {('ychus Esch. 37-66) 

 \Cyclinus Kby. 37-78) 



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

 opacus (Melsh.) 44-29 Ga. 



72. robertsi Leng 11-11 Ga. 



