Gyrinid^ 



15 



NOTERID^ 



The genera Noterus, Hydrocanthus, and Cantliydrus, the larvse of which 

 have fossorial legs, are placed in the family Noteridse by Dr. Boving. 



Cantliydrus 



20761. floridanus is valid, fide Blatch. 

 30-38. 



Hydrocanthus 



20762. similator Zimm. 28-1(5 Cal. Mass. 



DYTISClDiE 



Blatchley 25; Fall 26, 27, 28; Wallis 26; Hatch 28; Gellermann 28; 

 Darlington 28; Zimmermann 28; Brown 30; Carr 30; Bradley 30.* 



Bidessus 



2390e. microreticulatus Hatch 28-219 



Mich.Wash. 

 Coelambus 



20763. borealis Fall. 26-1.37 Alas. 

 20761. dentiger Fall 27-136 Alta. 



20765. bruesi Fall 28-64 Nev. 



20766. columbianus Brown 30-87 



B. C. 



20767. quebencensis Brown 30-234 



Que. 



20768. thermarum Darlington 28-1 



Nev. 

 2407a. Winnipeg Wallis 26-90 Man. 

 2424a. llneellus Gellermann 28-64 



Wash. 



Hydroporus 



20769. 

 20770. 

 20771. 

 20772. 

 20773. 



20774. 

 20775. 



20776. 

 20777. 

 19201b, 



yukonensis Fall 26-138 Yukon 

 alaskanus Fall 26-139 Alas, 

 recticollls Fall 26-140 Alas, 

 falli Blatch. 25-162 Fla. 

 uniformis Blatch. 25-162 



Fla. 

 brumalis Brown 30-235 Que. 

 brodei Gellermann 28-63 



Wash. 

 (Oreodytes) 



rainierl Hatch 28-220 Wash, 

 kincaidi Hatch 28-221 Wash. 

 . angustior Hatch 28-221 



Wash. 



Ae&bus 



20778. kenaiensis Fall 26-141 Alas. 



20779. gelidus Pall 26-142 Alas. 



20780. smithi Brown 30-88 B. C. 



20781. bryanti Carr 30-278 Yukon 



20782. pseudoconfertus Wallis 26-90 



Man. 



20783. palustris Wallis 26-92 Man 

 (.Gaurodytes) 



20784. ilybiiformis Zimm. 28-176 



Cal. 



Ilybius 



20785. Incarinatus Zimm. 28-181 



111. 

 2592. validity doubtful Pall 27-281 

 2599. validity doubtful Fall 27-281 

 2598. = fenestralis Say Fall 27-281 



Rhantus 



20786. hubbelU Hatch 28-222 Okla. 



2616a. ab. immaculatus Hatch 28-223 



Alas. 



Graphoderes 



2661. = zonatus Hope 95-33, 

 fide Hatch 28-229. 



2662. = 2661, fide Hatch 28-229 



GYRINIDiiE 



Wallis 26; Ochs 27, 29; Chamberlin 29; Blatchley 30; Hatch 26, 27, 29. 



Dineutus (= Dineutes) 

 2680. = assimilis Kby (americanus || ), 

 fide Ochs 27-39 



20787. amazonicus' Hatch 30-16 



Ark. 

 2671 = ciliatus Forsberg 21-312 

 fide Hatch 30-17 

 Gyrinus 



20788. hatchl Wallis 26-93 Mich. 



Gyrinus 



20789. dubius Wallis 26-93 Nfld. 



20790. gehringi Chamberlain 29-247 



N. H. 



2697. Is a good species fide Wallis 26-50, 

 disputing synonymy stated In first 

 Suppl. 



2698. cf. Zimm. 26-97 



* Bradley's Manual, followin? Zimmermann, makes some changes in classification by which 

 Vatellinae and Cybistrina are reduced to tribes, Agabetini and Coptotomini are combined respec- 

 tively with Copelatini and Colymbetini, and the tribal name Celinmi is altered to Methlini. The 

 results of Dr. Boving's studies differ. 



