374 Mr. E. E. Green 



on some 



of tufts of glassy filaments, sucli as occur in the males of 

 Icerjia,, CaUipappus, &c. 



"Walker's }/ublished description is as follows : — 

 "Mas. Gracilis, nigra, alba lanuginosa: antennce Jili- 

 formesy corpore duplo longiores : abdominis setm longissimoi: 

 pedes selosi : ala? cinerece." 



"Male. Black, slender, with a thick white covering: 

 feelers filiform, bristly, about twice the length of the body : 

 bristles of the abdomen about five times the length of the 

 body : legs bristly : wnngs gray. Length of the body 3 lines : 

 of the wings 4 lines. Columbia. From Dr. Cuming's 

 collection." 



No. 1489. Coccus poterii, Walker, Cat. Brit. Mus., Ilom. 

 p. 1082 ; Ray, Hist. Plant, i. p. 401 ; Kirby and Spence, 

 Intr. Ent. i. p. 318 (4th ed.). 



Walker's species is not now and never was represented in 

 the collection. So far as Walker is concerned, the appella- 

 tion is a " nomen nudum." It would appear to have been 

 invented by that author to provide a name for tiie insect 

 alluded to {loc. cit.) by Kirby and Spence in the following 

 sentence : — " A similar neglect has attended the Coccus 

 found on the roots of Poterium sanguisorbi." Kirby himself 

 seems to have referred to the following note by Ray (loc. 

 cit.) : — 



" De Pimpinella sanguisorba. . . . IIujus radicis adnascitur 

 quibusdam in locis granum rubrum, quo utuntur tinctores ad 

 colore.s carmesinum, unde sunt qui pro cocco habent, et Coccum 

 radicum appellant." 



This reference suggests identity with Margarodes polonicus, 

 Linn, (the Chermes radicum purpureus of Geoffroy), a species 

 said to produce a purple-red dye {v. Signoret, ' Essai sur les 

 Cochenilles,' p. 417). 



No. 1492. Coccus sinensis, Walker, Cat. Brit. Mus., Hom. 

 p. 1085. 



This is represented in the collection by a series of adult 

 females in fairly good preservation, a single mutilated male, 

 and a mass of prepared wax labelled " Insect wax of China." 



I have no hesitation in identifying this material with 

 Kricerus pela (Chav.). 



Walker's diagnosis of Coccus sinensis, transcribed below, 

 does not agree with the characters of the female in any 

 ])articular, and has probabl}' been drawn up from the male 

 larva or nymph. It reads as follows : — 



*' Pi'cea. EllipAica: dorsum lanugine alba dense vestitum : 

 pedes ferruginei," 



