374 Mr. E. E. Green on some 



of tufts of glassy filaments, such as occur in tlie males of 

 Icerya, Callipappus, &c. 



Walker''s published description is as follows : — 

 ^^ Mas. Gracilis, nigra, albo lanuginosa: antenncB jili- 

 formes, corpore duplo longiores : abdominis setce longissimce : 

 pedes setosi : alee cine rece." 



" 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 : wings gray. Length of the body 3 lines : 

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

 collection." 



No. 1489. Coccus p)oteri{, Walker, Cat. Brit. Mus., Hom. 

 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 tlie insect 

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

 sentence : — " A similar neglect has attended the Coccus 

 found on the roots of Poterium sanguisorhi." Kirby himself 

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

 cit.) : — 



" De Pimpinella sanguisorha. . . . Hujus radicis adnascitur 

 quihusdam in locis granum ruhrum, 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 rodicum purpureus of GeofFroy), a species 

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

 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 

 JEricerus pela (Chav.). 



Walker's diagnosis of Coccus sinensis, transcribed below, 

 does not agree with the characters of the female in any 

 particular, and has probably been drawn up from the male 

 larva or nymph. It reads as follows : — 



'■^ Picea. Elliptica: dorsum lanugine alba dense vestitum : 

 pedes ferruginei." 



