120 [^^".v, 



Mr. Fei'ris, however, erects a new genus — Ilcterococcus — to contain a 

 species having- cerani on the posterior segments only, coupled with claws 

 bearing a denticle on the inner face ; but distinguished ironi both 

 Psf'udococcns and Plienacoccus in having " quinque-locular dorsal pores 

 instead of the usual triangular (tri-locular) pores." Now spluupii cer- 

 tainly has circular dermal pores, but thej' are distinctly tri-loeular. 

 Under these conflicting conditions, I must either leave the species under 

 the genus in which it was originally jjlaced, or erect yet another new 

 genus for its reception. I prefer to take the former course and allow it 

 to remain, for the present, a Pseudococcua. 



Mr. Donisthorpe has supplied the following interesting note on the 

 habits of the insect: — "The association between sph(i(jni and the ant is 

 certain ; the ants carry them into safety, and they occurred in every nest 

 of Fonnicu picea, but not in nests of 2Iyriiiica and other ants in sphag- 

 num clumps. I found some 20 picca nests and, by just oi)ening them 

 slightly, as I did not want to disturb them all, I could always Hnd the 

 Coccid." 



Pseudococciis liibcrnicus Newst. 



During a visit to Selby (Yorkshire), in September of lOlS, speci- 

 "itiens of a Pseuducoccus were found in crevices and under loose bark of 

 dead Oak branches lying on the turf. The insects had presumably been 

 living on the grasses before taking shelter in the wood, where they were 

 constructing their ovisacs. Fresh examples were of a purj)lish-grey 

 colour, thinly dusted with mealy powder, with short waxy processes on 

 the two last segments of the body. Prof. Newstead, to whom I sub- 

 mitted some of the material, refers them to his P. Jiibi'rnlciis. My 

 examples do not show the intersegmental " squamose sti'uctures '' 

 described by Newstead. 



Pseudococciis (jdlianl Green. 



Mr. Gr. F. Ferris (in litt.) draws my attention to the probable 

 identity of Pseudococciis citropliiliis and galutni. He sends me a 

 typical pre})aration of the former, which I have compared with my 

 tjq^es of (jahani. I find that he is correct in his presumption of 

 identity, but not so in his opinion that the name citropliihis has pre- 

 cedence. Claussen's informal descri])tion was published in Calif. Agr. 

 Exp. Station Bull. 2o8, which bears date "Sept. 1915" on the title- 

 page ; while my description of gahani aj)peared in the Ent. Mo. Mag. of 

 June in the same year. My name, therefore, Avould appear to have 

 precedence by about three months. 



