Vol. xxiii] ENTOMOLOGICAL NEWS 



397 



the Santa Barbara material agreed so well with the coccicls 

 described by Messrs. Cockerell and Kuwana, even though 

 placed in separate genera, raised the question as to the validity 

 of artemisiae. It was therefore deemed wise to make a careful 

 study of the latter species and at the same time compare it with 

 lichtensioides. Through the courtesy of Prof. Cockerell, ad- 

 ditional material of his species was submitted from Tolland, 

 Colorado, on Artemisia tridentata. 



In comparing and studying coccids, especially Diaspinae, 

 the writer has found it decidedly advantageous to resort to the 

 use of photomicrographs, and this method was followed in go- 

 ing over this material. Two exposures were made, one show- 

 ing the anterior half of the insect, including the antennae and 

 first pair of legs, and the second exposure exhibiting the pos- 

 terior half, magnification approximately one hundred and thir- 

 ty diameters. 



In comparing these photomicrographs the resemblance was 

 found to be remarkably close since the capitate dermal spines 

 and the size and number of hairs around the anal ring agree 

 almost precisely, although there was a slight difference in that 

 the antennae and legs of lichtensioides did not appear quite so 

 robust as in artemisiae. However, the fact that the append- 

 ages of lichtensioides are a trifle smaller than in artemisiae 

 is certainly not a character of sufficient importance to separate 

 them as distinct species, let alone placing them in separate 

 genera. 



Possessing six long hairs around the anal opening, as does 

 artemisiae, surely excludes it from Eriococcns, which is recog- 

 nized as possessing long caudal lobes, this character being ab- 

 sent in Mr. Kuwana's species, and eight long hairs located 

 around the anal ring. Some specimens of lichtensioides pre- 

 sent a few scars on the surface of the body and, although they 

 can be seen on Mr. Kuwana's material, they are not so appar- 

 ent. Small cylindrical pores are to be seen on the surface of 

 both lots of material. 



Superficially, the sacs enclosing artemisiae and lichtensioides 

 are alike in color, although there is a slight difference in size, 

 which is undoubtedly due to the fact that Mr. Kuwana's ma- 



