375 



KEPORT ON SOME COCCIDAE FROM ZANZIBAR, COLLECTED BY 



Dr. W. M. ADERS. 



By E. Ernest Green, F.E.S., F.Z.S. 



The collection contains no novelties or species of special interest. The enumeration 

 of them will, however, contribute to a knowledge of the local fauna of the country, of 

 the distribution of the several species, and of the plants that they afiect. 

 Icerya seychellarum., Westw. 



" On Citrus limonii.'' (I.B.E., No. 55.) 

 Asterolecanium bambusae, Bdv. 



" On stems of large bamboo." (T.B.E., No. 49.) 

 Pseudococcus citri, Risso. 



" On immature cotton bolls, under sepals. Zanzibar Town." (I.B.E., No. 58.) 

 Pseudococcus crotonis, Green. 



Food-plant not mentioned. (I.B.E., No. 66.) 



These examples are not quite typical, but the differences are not sufl&cient to 

 justify their description as a new species, without more ample material for 

 study. 

 Pseudococcus perniciosus, Newst. 



" On Shu-Shu "—a Cucurbitaceous plant. (I.B.E., No. 5L) 

 Pseudococcus virgatus, Ckll. 



" On cotton (Gossypium),^^ and " on Clitoria,'' both at Zanzibar Town. (LB.E., 

 No. 54.) 

 Lecanium hesperidum, L. 



"On indigenous fern: Chake-Chake, Pemba Is." (LB.E., No. 64.) Every 

 single individual has been parasitized. 

 Lecanium viride, Green. 



" On coffee leaves and young terminal shoots : Mbweni, Zanzibar." (I.B.E., 

 No. 6L) 

 Pulvinaria antigoni, Green. 



" On stem of chilies : Zanzibar Town," and " on leaf of Luffa acutangula : Indian 

 Prison garden." (LB.E., Nos. 70 and 71.) 



Both of these gatherings were very heavily parasitized, a condition which I 

 have observed to be the case with material of the same species from Mauritius. 



P. antigoni is well characterized by the rather loose series of long, curved, 

 acutely pointed marginal hairs. My original description of the species does not 

 sufficiently emphasize this character. Amongst the pointed hairs may be found 

 an occasional one that is sUghtly frayed at the extremity. All the marginal hairs 

 are much longer and stronger than in P. psidii, to which it was compared. 

 Ceroplastes fl,oridensis, Comst. 



A single example " on avocado pear : Zanzibar Town." (LB.E., No. 62.) 



