THE CANADIAN ENTOMOLOGIST. 45 



with a film of semitransparent silvery secretion, which under the micro- 

 scope has a reticulated structure, resembling a skeletonized leaf. Scale 

 dark brown, exuviae dull orange. (^ scale white, the filmy margin broad, 

 so that the scale becomes oval, or sometimes subcircular. The ^ and ? 

 scales congregate in large patches on the leaves, and even the area 

 between them is thinly covered with the silvery secretion. 



$ . Very long and narrow, dark red. No groups of circumgenital 

 glands. Four lobes, and many pointed processes of the margin. Em- 

 bryonic larva with two large figure-of-8 glands in the cephalic region. 



Had. — On leaves of a forest tree, Campinas, Brazil; April, 1898. 

 (F. Nocuk.) 



I will take this opportunity to record a new locality and food plant 

 for Aspidiotiis didyospermi, Morgan. Dr. F. Noack found it in May, at 

 Campinas. Brazil, on leaves of ivy (Hedera helix). 



CONTRIBUTIONS TO COCCIDOLOGY. — I. 



BY J. D. TINSLEY, NEW MEXICO AGR. EXPT. STA. 



Dactylopius sorghiellus, Forbes. Syn. D. Kingii, Ckll. 



Dr. S. A. Forbes has kindly sent me the type material of this 

 species, which I have examined with much interest. The material 

 studied consisted of 4 specimens. As is usual with these subterranean 

 forms the antennae are quite variable, both in the number of segments 

 and their relative length. 



Only two of the antennte of the 4 specimens were 8-jointed, the 

 others being 7-jointed, and some plainly aborted. After careful measure- 

 ment and study, I conclude that the forms described by Cockerell in 

 Science-Gossip., Feb., 1897, p. 240, as D. Kingii, must be referred to this 

 species. 



I have studied quite a number of specimens of subterranean ant's- 

 nest forms collected by Mr. Geo. B. King around Lawrence, Mass., and 

 have called those specimens D. Kingii which had an antennal formula of 

 81237564. Joint I is usually appreciably longer than either 2 or 3, 

 although I, 2 and 3 may be subequalj 7 is sometimes longer than 3, and 

 6 sometimes longer than 5. 



By examining a considerable number of specimens, however, the 

 formula stated above will always be found to stand out quite prominently. 



By way of parenthesis let me add here, that no one should undertake 

 to describe the ^ntenn^vl characters of a species of the Dactyiopincs fropi 



