190 THE CA.NADIA.N ENTOMOLOGIST. 



? as described by Comstock. The lobes retain their brown colour 

 after the rest of the $ has become colourless from soda treatment and 

 compression. Rows of gland-orifices indicate obsolete segmentation of 

 terminal portion. Ventral glands in five groups, each of about 22. 

 Mouth-parts very near anterior border. 



Eggs dark purple, found with $ in March. The ? > however, is dark 

 brown, not dark purple. 



^ Scale distinctly unicarinate. Com.stock laid great stress on the 

 keel-less (^ scale of ortholobis, but my specimens show that it has normally 

 a distinct keel. As Mr. Howard remarks, one can find individuals not 

 showing any keel, and it so happened that Comstock's types were of this 

 kind. 



Although my supposed new species was thus set aside, Mr. Howard 

 tells me that he knows of an undescribed Chionaspis on Cottonwood. 



(10.) Mytilaspis albus var. concoior, Ckll., common on Atriplex 

 canescens at Las Cruces, N. M. On March 19, the males, hitherto un- 

 described, were hatching. 



^ with the body dark purple, legs very pale yellowish, wings white. 

 Thorax long, wings set far back. Caudal style long. Last joint of 

 antenna shorter than those before it. Tarsus with long knobbed hairs, 

 claw with small knobbed digitules. 



(11.) Aspidiotus abietis (Schrank), Low, 1882. 

 n. syn. A. abietis, Comstock. 

 n. syn. A.pini, Comstock, fide Pergande. 



Lately Mr. K Sulc wrote me that the Coccus abietis of Schrank was 

 now known to be an Aspidiotus ; therefore, he remarked, Comstock's A. 

 abietis could not be retained, at all events under that name. He was 

 not able to say whether abietis, Comst, was the same as Schrank's insect, 

 but in order that I might determine this point, he was so good as to send 

 me examples of rt!^/^//.r, Schr., which had been found on Pinus silvestris 

 at Chuchle, near Prague, Bohemia. 



It happened that I possessed examples of A. abietis, Comst., sent 

 from Ithaca, N. Y., by Mr. R. H. Pettit; found on Abies canadensis. On 

 comparing these with those from F.urope, I was certain that I had only 

 one species before me. Among the Bohemian examples, I found a $ ; 

 it was bright yellow, with a dark brown thoracic band 



