Gyrinid.5: 



15 



NOTERIDiZE 



The genera Noterus, Hydrocanthus, and Canthydrus, the larvae of which 

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



Cantliydrus 



207C1. floridanus is valid, fide 

 30-38. 



Blatch. 



Hydrocanthus 



20762. similator Zimm. 28-1G5 Cal. Mass. 



DYTISCIDiZE 



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. 26-137 Alas. 



20764. dentiger Fall 27-136 Alta. 



20765. bruesi Fall 28-64 Nev. 



20766. columbianus Brown 30-87 



B. C. 



20767. quebencensis Brown 30-2-34 



Que. 



20768. thermarum Darlington 28-1 



Nev. 

 2407a. Winnipeg Wallis 26-90 Man. 

 2424a. lineellus 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, 

 recticollis Fall 26-140 Alas, 

 falli Blatch. 25-162 Fla. 

 uniformis Blatch. 25-162 



Fla. 

 brumal is Brown 30-235 Que. 

 brodei Gellermann 28-63 



Wash. 

 (Oreodytes) 



rainieri Hatch 28-220 Wash, 

 kincaidi Hatch 28-221 Wash. 

 . angustior Hatch 28-221 



Wash. 



A^abus 



kenaiensis Fall 26-141 Alas, 

 gelidus Fall 26-142 Alas, 

 smith i Brown 30-88 B. C. 

 bryanti Carr 30-278 Yukon 

 pseudoconfertus Wallis 26-90 



Man. 

 palustris Wallis 26-92 Man. 

 (Gaurodytes) 

 ilybiiformis Zimm. 28-176 



Cal. 



20778. 

 20779. 

 20780. 

 20781. 



20782. 



20783. 



207&i. 



Ilybius 



20785. incarinatus Zimm. 28-181 



111. 

 2592. validity doubtful Fall 27-281 

 2599. validity doubtful Fall 27-281 

 2598. = fenestralis Say Fall 27-281 



Rhantus 



20786. hubbelli Hatch 28-222 Okia, 

 2616a. ab. immaculatus Hatch 28-223 



Alas. 



Graphoderes 



2661. = zonatus Hope 95-33, 

 fide Hatch 28-229. 



2662. = 2661, fide Hatch 28-229 



GYRINIDiZE 



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 

 GjTinus 



20788. hatchi 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, following Zimmermann, makes some changes in classification by which 

 Vatellinse and Cybistrinac are reduced to tribes, Agabetini and Coptotomini are combined respec- 

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

 results of Dr. Boving's studies differ. 



