September, IS'JO.J 229 



2. — Mttilaspis Brxr. 



Aspidiotus buxi, Bouche, Ent. Zeit. (1851), p. 111. Mytilaspis huxi, Signoret, 

 Ess. 8. Coch., p. 137, pi. vi, fig. 10 ; M. pandani, Comstock, Rept. U. S. Dept. Ag. 

 (1880), p. 324, pi. XX, fig. 12, and 2nd Rep. Corn. Un. Ex. St., p. 118. 



I have found this species in company with Uhleria camelUcB, Comst., on leaves 

 of the cocoa palm from Barbadoes, also on Dictyospermum album, and on Areca 

 lutescens, all received from Mr. Douglas. I have no doubt of this species being the 

 same as Mytilaspis pandani, Comstock, described and figured by him {op. cit.), and 

 I cannot help thinking that it must be identical with the Mytilaspis huxi, Bouche, 

 described by Signoret {op. cit.). Prof Comstock, who found his species on the 

 Pandanus, mentions that it is evidently closely allied to M. buxi. It seems evident 

 that the species is not uncommon, from finding it on the several plants mentioned 

 which Mr. Douglas received from different parts. I do not observe anything in 

 Signoret's description which would not apply to the species I have examined, but 

 his figure of the scale differs somewhat from his description. The insects, however, 

 are often so huddled together that the individual has not facilities for fully develop- 

 ing its scale, which is consequently irregular in shape. Prof. Comstock describes 

 the scale as light brown in colour, with the posterior end pale and sometimes white. 

 In those which I have examined the scale is a little different in colour from this de- 

 scription, for I have found it always white or greyisli-white, with the second cast 

 skin very large and of a brown colour, making that part of the scale under which it 

 lies appear of a light brown colour, often much resembling superficially Fiorinia 

 pellucida,Tsirg.-Tozz., which perhaps at first suggested to Dr. Signoret the propriety 

 of placing it in the genus Fiorinia, as he mentions. 



? scale greyish-white, measuring from tip of larval skin to posterior end of 

 scale about 1 mm. First larval skin measures about "25 mm., and lies with extended 

 antennae beyond the margin of the second skin, which measures about '55 mm. 

 Rudimentary eyes and antennae may be seen sometimes in this species. The margin 

 of the abdominal segments has similar secreting glands to M. linearis, but the two 

 glands forming the double set are wide apart instead of close together, as in the 

 former species, and the plates, though in the same position, are single instead of 

 double. The spines are the same in number and situated as usual. The median 

 lobes are as described by Prof Comstock, and very different to those of M. linearis. 

 The ventral grouped glands of this species seem more constant than usual, for I have 

 found them the same as described in Comstock's work, whose figs. 1 and 2, pi. xx 

 (op. cit.) render it easy to identify the species. The marginal secreting glands, with 

 the exception of the first, are much less conspicuous than in Mytilaspis linearis, 

 which is a considerably larger insect than M. buxi. 



3. — Mytilaspis pinn^formis. 



Aspidiotus pinnceformis, Bouche, Ent. Zeit. (1851), p. 111. Mytilaspis pinncp- 

 formis, Sign., Ess. s. Coch., p. 141, pi. vi, figs. 4 and 8 ; Doug., Ent. Mo. Mag., vol. 

 xxiv, p. 21. Aspidiotus citricola, Packard, Guide Stud. Ins., 2nd ed. (1870), p. 527 ; 

 Comstock, U. S. Ag. Rep. (1880), p. 321, pi. vii, fig. 1, pi. xviii, fig. 3, pi. xx, fig. 3. 



This species was kindly sent to me by Mr. Douglas, who received it from the 

 Royal Gardens at Kew, on leaf of orchid, Cymbidium pendulum, and he considers it 

 {I.e.) the same as described by Bouche and Signoret. I have examined many speci- 

 mens from the leaf sent to me, and I have come to the conclusion that the species is 



X 



