AET. 4 BEETLES OF THE GENUS COCCINELLA DOBZHANSKY 31 



3. Convexity of the elytra very great in the posterior third of 



their length prolongata. 



Convexity of the elytra regular 4. 



4. Infundibulum not dilated on its posterior end. Elytra fre- 



quently with transverse black fasciae trifasciata. 



Infundibulum dilated at both ends. Elytra usually without 



transverse black fasciae 5. 



5. Head with a broad white band across the front. Infundibu- 



lum dilated more strongly at the anterior than at the posterior 



end novemnotata. 



Head v.-ith two white spots near the eyes. Infundibulum 

 dilated equally at both ends, or with the posterior end dilated 

 more strongly than the anterior 6. 



6. Infundibulum very short, equally dilated at both ends. Cornu 



pointed at the end, its ringlike sculpture rudimentary. Body 



little convex undecimpunctata, 



Infundibulum very strongly dilated at its posterior end. Cornu 



not pointed 7. 



7. Body strongly convex. Elytra alutaceous_- nivicola subspecies alutacea. 

 Body moderately convex. Elytra nonalutaceous difRcilia. 



8. Body little convex. Elytral suture with a broad black stripe. _ suturalis. 

 Body moderately or strongly convex. Elytral suture with- 

 out or with a narrow black stripe 9. 



9. The posterior end of the infundibulum dilated much more 



strongly than the anterior end, and not provided with a 



circular constriction nivicola. 



The posterior end of the infundibulum provided with a circu- 

 lar constriction. Both ends of the infundibulum equally 

 strongly dilated, or the anterior end more strongly dilated 

 than the posterior 10. 



10. Elytra spotless californica. 



Elytra spotted 11. 



11. Body strongly convex transversoguttata. 



Body moderately convex johnsoni 



