3i 8 ENTOMOLOGICAL NEWS. [December, 



name Pseudococcus.''' No mention is here made of adonidiim, 

 and I think we may consider that cacti was certainly intended as 

 the type of the genus. 



It seems doubtful whether Westwood's name Pseudococcus can 

 be used at all, as the restriction of Coccus L. to cacti and allied 

 forms will probably be maintained by future authors ; and as for 

 adonidum, it belongs to Dadylopius, which was published in 1835. 

 From this it appears that the ' ' Pseudococcus Westw. ' ' of Signoret 

 and modern writers is not the true genus of Westwood, but stands 

 in need of a new name. I will suggest that it be called Pliena- 

 coccus a word which has practically the same meaning as Pseu- 

 dococcus. 



- Phenacoccus consists of Dactylopids which have in the female 

 g-jointed antennae, and construct more or less distinct ovisacs. 

 The following species have been described. 



P. aceris Geoff. (Europe and North America), P. mespili 

 Geoff. (Europe), P. hedercs Sign. (Europe), P. platani Sign. 

 (Europe), P. cesculi Sign. (Europe), P. brunnitarsis Sign. (Eu- 

 rope), P. fagi Dougl. (Europe), P. quercus Dougl. (Europe), 

 P. ulicis Dougl. (Europe), P. ulmi Dougl. (Europe), P. socius 

 Newst. (Europe), P. associalis Newst. (Europe), P. astelice 

 Mask. (New Zealand), P. casuarince Mask. (Australia), P. 

 nivalis Mask. (Australia), P. yuccce Coquill. (California), P. 

 helianthi Ckll. n. sp. (N. Mex.). 



-o- 



NOTES ON ARGYNNIS CYBELE AND LETO. 



By HENRY SKINNER, M.D. 



It has been held by some Lepidopterists that leto is a Western 

 form of cybele (Boisd. Lep. Cal. p. 60, 1869, Streck. Call. p. 

 in, 187) I am not prepared to prove absolutely that they are one 

 and the same species, but nevertheless I think such is the case. The 

 Pacific coast examples of leto may be considered the typical form, 

 being dark, almost black in the female (of course excepting the 

 yellowish white border) and the inner area of all wings darker in 

 the male. Specimens of leto from further East more nearly ap- 

 proach cybele, and in some specimens to such an extent as to 

 make it almost, if not entirely impossible to say to which lorm 

 they belong. I have one specimen of leto from St. Ignatius, 



