44 PSYCHE. [Ap,ii„oo. 



TABLE OF NORTH AMERICAN KERMES, BASED ON EXTER- 

 NAL CHARACTERS. 



BY T. D. A. COCKERELL, MESILLA PARK, N. MEX. 



Not entirely covered with vv:ix, nor jjiibescent, nor covered with a white 



powder ............ i 



Covered all over with (.lull white wax. (Arizona) . fc/-//rr/^.s- Ehrhorn. 



Covered with snow-white powder, except on the middle of tlie back. 



(Mass.) ........ ///I'aZ/j- King & Ckil. 



Small, thinlv pubescent. (Kans., Mass.) . . . fzibescciis Bogue. 



1. Convex, without a median longitudinal constriction .... 2 



With a more or less distinct median longitudinal constriction . . 6 



2. Large, with transverse sulci, the segments more or less gibbous, with three 



gibbosities (one median) in each transverse seiies. (Colo., N. M.) 



gUlettei Ckll. 

 Segments not at all gibbous ........ 3 



3. Very large (10 mm. dlam.) , rather rough, marbled with brown and dull 



white, the white with brown specks. (Mexico.) . . grandis Ckll. 



Not so large, species of the U. S. ....... 4 



4. Extremely convex, red brown witli distinct dark feriuginous transverse bands. 



(Mass.) .......... az/i/z-f/ King. 



Orange-brown, maibled with didl white, the white with fulvous points; 

 younger individuals with a broken waxy coating. (Calif.) atistini'EX\\\\. 



Larger than ausiini, nearly globular, niarbled with white, black and reddish, 

 or black and reddish, covered with waxy secretion, which is divided into 

 small portions separated by smooth (wax-free) lines; the minute points on 

 the white are intensely black. (Okla.) .... bo^ ue i CkW. 



Pale ochreous, or reddish, with small black spots, and minute black points, 

 usually distinctly variegated with irregular pale bands . . t; 



5. Broader than long, the pale bands running in a transveise diiection, parallel 



with the rows of black spots. (Bluflton, S. C, etc.) galliforniis Riley. 



Longer than broad, the pale bands running longitudinally, at right angles 

 to the rows of spots. (Mass., Del.) .... kingii Q,V\\. 



6. Segmentation distinct, segments very strongly gibbous. (Calif.) 



cockerelli Ehrh. 

 Segmentation distinct, but segments not gilibous ; sinface not speckled with 

 black. (Kansas.) ....... conciiirn/li/s Ckll. 



Segmentation not distinct, nor the segments gibbous ; surface speckled with 

 black or dark dots .......... 7 



