ABT. 4 BEETLES OF THE GENUS COCCIKELLA DOBZHAITSKY 17 



and more narrowly oval than in transversoguttata, spots 4 and 5 fre- 

 quently separate. Spot 1, or spot 4, or both, may be missing. Length 

 of the body, 5.8-6.5 mm. 



Casey (1899) insisted on granting a specific rank to C. nugatoria 

 Mulsant. In fact it is only a rather indistinct subspecies of C. tranS' 

 versoguttata Falderman living in the Western States and in Mexico. 

 An enormous area extending from North Dakota and New Mexico 

 to the Pacific Ocean is inhabited by a mixed population in which all 

 the intermediates between the typical transversoguttata Falderman 

 and the typical nugatoria Mulsant may occur. Only in Mexico is the 

 whole population nugatoria. The genitalia of transversoguttata (from 

 Massachusetts) and of nugatoria (from California) are alike. 



Geographic distribution. — Localities as follows: 



Minnesota: Two Harbors, New London, Lake City. 



North Dakota: Binford, Bismarck. 



Wyoming: Clieyenne, Como, Carbon County. 



Colorado: Pingree Park, Denver, Manitou, Leadville (10,000 feet), Vega. 



New Mexico: Chama. 



Idaho: Lewiston, Jerome, Boise, Nampa. 



Utah: Ogden Canyon, Emery County, Taylorsville, Salt Lake City, Murray 



Park City. 

 British Columbia:. Vernon, Penticton, Merritt, Vancouver. 

 Washington: Pullman, Toppenish, Tacoma, Wapato. 

 Oregon: Cascade Rapids. 



Nevada: Carson City, Esmeralda County, Nixon. 

 California: Modoc County, Madeline, Nevada County, Big Pine. 

 Mexico: Queretaro, Mexico City, Guadalajara. 



COCCINELLA NIVICOLA Menelries subspecies MONTICOLA Mulsant 



Coccinella rnonticola Mulsant, 1850, p. 115. — Casey, 1899, p. 89. — Leng, 1903, 



p. 198; 1920, p. 216.— Johnson, 1910, p. 63. 

 Coccinella lacustris LeConte, Proc. Acad. Nat. Sci. Philadelphia, vol. 6, p. 131, 



1852. 

 Coccinella impressa Casey, 1899, p. 89; 1908, p. 402. 



Broadly oval, strongly convex. Head with white spots near the 

 eyes, pronotum with white quadrangular spots in anterior angles, 

 pronotal epipleura with quadrangular marks or with only a white 

 stripe in the anterior angles. Mesepimera white, metepimera brown 

 or black. The sides of the pronotum frequently possess one or several 

 impressions, which are variable in extent but which may be altogether 

 lacking. Individuals with very strongly developed impressions on the 

 pronotum were described by Casey (1899) as a separate species, Cocci- 

 nella impressa. In a more recent paper, Casey (1908, p. 402) treated 

 impressa as a subspecies of rnonticola Mulsant. The character is, how- 

 ever, only an individual variation, and in my opinion the name 

 impressa must be treated simply as a synonym of monticola. Elytra 



