Dytiscid.e 



Hydroporus (lairv. 



2521. stagnalis G. & H. 68-441 L.Sup. Mass. 

 collaris | i Lee. 5.5-292 



22. persiniilis Cr. 73-395 Can. IMass. 



23. oblitiis Aube 38-002 Mich. N.H. 

 luridipennis Melsh. 4ti-2S [Va. 

 limbalis Melsh. 46-28 



24. brevicornis Fall 17-180 N.H. Mass. 



25. terminalis Shp. 82-484 Cal. (Md. 



26. vilisLec. 51-208- Cal. 



27. palliatiis Horn 83-283 Cal. 



28. latebro.sus Lee. 51-208 Cal. 



Hydroporus Clairv. 



2529. hardy i Slip. 82-484 



30. belfragei Shp. 82-485 



31. difformis Lee. 55-298 



32. eonoideus Lee. 50-216 



Cal. 

 Tex. 

 N.Y. Ind. Ga. 



L.Sup. 



?planatus ISIann. 53-162 Alas, 

 ytruncatus Mann. .53-162 Alas. 

 ?discicollis Say 34-440 

 Vimpressiirons Mots. 53-165 

 Vbiguttatus Kby. 37-69 Can. 

 ?punetatus .Say 24-271 



COLYMBETIN.ffl 



.\i;.\iiiM 



Hydrotrupes Shp. 82-492 

 2533. palpalis Shp. 82-492 



Cal. 



Agabinus Cr. 73-397 

 2534. glal>rellus (Mots.) 59-171 Cal 

 iiioruhis (Lee.) 61-340 



Agab 



2535. 

 36. 

 37. 

 38. 



39. 



40. 

 41. 



42. 

 43. 



44. 

 45. 

 46. 



47. 



48. 

 a. 

 49, 

 50. 

 51, 



53. 



54. 

 55. 

 56. 



57. 



58. 

 59. 

 60. 

 61. 



62 



us Leach. 17-69 

 (Anisnmcra Brulle 35-205) 

 (daurodytt's Thorns. 60-57) 

 cordatus (Lee.) .53-226 N.Mex. Colo, 

 rectus (Lee.) 69-375 Vane. L 



intersectus (Cr.) 73-419 Cab.Wyo. Vt. 

 hypomelas Mann. 43-221 Alas, 

 irregularis Mann. 53-159 Alas, 

 seriatus (Sav) 23-97 Lab. E. U.S. 



parallelus (Lee.) 50-213 

 arctus Melsh. 46-27 

 striatus Aube 38-305 

 suturalis (Cr.) 73-423 Nev. 



perplexus Shp. 82-498 Vane. L 



lugens (Lee.) 51-203 Cat. 



obtusatus (Say) 23-99 N.H. N.Y. Va. 



nitidus (Sav) 23-98 

 planatus Shp. 82-503 Mass. 



ijrevieollis (Lee.) .57-24 Cal. 

 stagninus (Say) 23-100 Pa. 

 striola Aube 38-308 

 confertus (Lee.) 61-340 Or. 

 walsinghami (Cr.) 73-419 

 semivittatus (Lee.) 51-204 Colo. Ind. Pa. 

 spilotus (Lee.) 59-5 Nebr. [Fla. 



texanus Shp. 82-505 Tex. 



punetatus jlelsh. 46-27 Pa. 

 punetulatus Aube 38-332 Lab. L.Sup. 

 a-neolus (Cr.) 73-417 [Or. 



a'ruginosus Aube 38-298 N.J. 

 semipunctatus (Kby.)37-69 Lab. Mass. 



L.Sup 

 stridulator Shp. 82-509 

 mutus Shp. 82-513 

 ta^niolatus (Harr.) 28-104 

 disintegratus (Cr.) 73-410 



lineellus (Lee.) 61-340 

 inscriptus (Cr.) 73-422 

 congener (Payk.) 98-214 

 nigripalpis Sahib. 80-56 

 dissiniilis Sahib (In Litt.) 

 borealis Shp. 82-513 

 reticulatus Kby. 37-71 

 fimbriatus (Lee.) 51-214 



H. Bay. 

 H. Bay. 

 Mass. Va. 

 Can. Kans. 

 Ind. Pa. 

 Cal. 



Lab. N.H. 

 Lab. N.H. 

 Lab. 



L.Sup. Mass. 

 [Va. 



Agabus Leach. 



2563. eonfinis (Gyll.) 08-511 

 ovoideus (Cr.) 73-418 

 64. discolor (Harr.) 28-164 

 ?anibiguus (Say) 2.3-96 

 subfuscatus Shp. 82-514 

 lecontei (Cr.) 73-417 

 discolor || (Lee.) 51-204 

 lutosus Melsh. 53-31 

 phiEopterus Kby. 37-70 

 67. bicolor Kliy. 37-70 

 ()8. obliteratus (Lee.) 59-5 

 griseipennis (Lee.) 59-5 

 obsoletus (Lee.) .58-15 

 infuscatus Aube 38-330 



72. erythropterus (Say) 23-95 



73. morosus (Lee.) 51-204 

 fossiger Mots. 59-170 

 strigulosus (Cr.) 73-422 

 nanus (Lee.) 78-4.52 

 anthracinus Mann. 52-304 

 scapularis Mann. 52-203 



76. arcticus (Payk.) 98-201 

 subfasciatus (Lee.) 02-17 



77. elavatus Lee. 59-4 



78. austini Shp. 82-510 



79. nigrofeneus Er. 37-157 

 erich.soni G. &: H. 68-451 

 lutosus (Cr.) 73-419 

 sobrinus Mots. 59-170 

 gagates Aube 38-306 



65. 



66. 



09. 

 70. 

 71. 



74. 



75. 



80. 



81. discors (Lee.) 01-341 



82. tristis Aube 38-350 

 atratus Mann. 53-157 



83. leptopsis (Lee.) 78-.590 



84. longulus (Lee.) 78-590 



85. fuscipennis Payk. 98-209 



Vt. 

 INIass. 



Cal. Alas. 



Can. 



Can. Alas. 

 Nebr. 

 Nebr. Cal. 

 Cal. 

 Lab. 



Mass. N.Y. 

 Cal. [Va. 



Cal. 



Colo. 



N.H. L.Sup. 



Lab. 



Man. 

 B.C. 

 Lai). Mass. 



[L.Sup. 



N.H. N..I. Va. 



Ind. 



Or. Vane. T. 



Lab.N.H.Alas. 



L.Sup. 

 L.Sup. 

 Eur. Lab. 



— ?subopacus Mann. .53-157 



— ?terminalis Melsh. 4(J-27 



— ?americanus Aube 38-334 



Ilybiosoma Cr. 73-413 



2586. regularis (Lee.) 51-203 



oblongum (Mots.) 59-309 

 87. bil'arius (Kby.) 37-71 



Ilybius Er. 32-34 



2588. ater (DeG.) 74-401 



ungularis (Lee.) 62-521 



Cal. 



Can. INIich. 

 Mass. 



Pa. 



Middle States. 



