Vol. XXIV] ENTOMOLOGICAL NEWS 389 



Series 10, fig. 10. Maculae of the subbasal series nearly as in 

 Series 8; maculae of the median series enlarged, the medial crescenti- 

 form, the lateral and median nearly coalescent, the median macula 

 produced posteriorly and confluent with the subapical macula, the three 

 forming an irregular figure-; pattern. Pronotal M-shaped maculation 

 again reconstructed as in Series 7 and 8. Under surface dark, as in 

 Series 9. 



Figure n is drawn from a specimen collected in Southern Cali- 

 fornia, and kindly loaned to me by Dr. E. C. Van Dyke. The elytral 

 maculation is self-explanatory after what has been said in the con- 

 sideration of the preceding series. In the specimen the metasternum 

 and abdomen are dark rufous, the central area of the abdomen is 

 clear rufous. The mes- and met-episterna are distinctly whitish. The 

 lateral macula of the median series nearly meets the marginal bead, 

 the latter and sutural edge of the elytra are very narrowly piceous. 

 The scutellum is fuscous. Two companion specimens collected at 

 Old Fort Brown, Brownsville, Texas, on August 3d, 1906, by A. B. 

 Wolcott and loaned to me by Mr. F. W. Nunenmacher, are quite iden- 

 tical in elytral maculation. In one specimen the under surface is 

 rufous and the mestasternum is rufo-piceous. In the other one the 

 metasternum is nigro-piceous and the general color darker rufous. In 

 both the mes- and met-episterna and met-epimera are distinctly whit- 

 ish, the white extending caudad along the sides of the first two ab- 

 dominal segments, and more dilated on the first segment in one 

 specimen than in the other. 



The coxal lines in both are black and the enclosed coxal plate is 

 rufo-piceous. In one specimen the front of the head is fuscous ; in 

 both the marginal and sutural edges of the elytra are dark as in 

 Series 10. The scutellum is fuscous. 



A careful re-examination of Type 10 clearly determines that the 

 white of the sternal side pieces extends backward on the first two 

 abdominal segments. 



Mr. Nunenmacher informs me that these extreme dark 

 forms are more common in Mexico. They are rare north of 

 the Mexican boundary, at least as far as we know here on 

 the Pacific coast. 



Figure 12 illustrates an extreme pale form taken in Ari- 

 zona, and it appears to be rare. The white of the sternal 

 side pieces is distinct and its extension backward upon the 

 abdomen is also evident. 



The extension of the white upon the sides of the abdomen 

 occurs sporadically in specimens collected at Mokelumne Hill, 



