1886.] 249 



I have lately obtained — 



Aspidiotus camellicB, Boisd., on buds and bracta of Camellia, from Mr. Parfitt, 

 Exeter ; new to us. 



A. limonii, Sign., on imported lemons, S and ? ; S imago dead under a few scales. 



Chionaspis alni, Sign., on alder, at Lewisham ; new to us. 



Chionaspis eiionymi, Comst. M. Lichtenstein sends this from Montpellier, where, 

 during the last few years, it has become so abundant on the leaves of Euonymus 

 japonicus, that, as it kills the shrub, it threatens to render the cultivation of 

 this fine hardy evergreen impossible. It is likely enough that it will be found 

 in Britain where the shrub is now common {c.f. Proc. Ent. Soc. Lond.,Feb. 3rd). 



C salicis, Linn. I find this on sallows at Lee, and Mr. Parfitt finds it very common 

 at Exeter. I think with Prof. Comstock that it is identcal with C.fraxini, Sign. 



Mytilaspis pomorum, Bouche. 



Besides that on apple and pear trees, I find a scale very similar to if not identical 

 with it on plum trees and dogwood, which have already been taken to be the same 

 species ; I also find scales, apparently the same, on blackthorn, whitethorn and 

 currant bushes, but a microscopical examination is requisite to determine the 

 identity or difference, Comstock enumerates 19 trees on which he finds scales osten- 

 sibly of one species (pomorum), but as he sagaciously observes, "In nearly each if 

 not in every case the opinion respecting the specific identity of the forms occurring 

 on other plants with that upon the apple has been based upon the characters pre- 

 sented by the scale. These characters being insufficient to distinguish this species 

 from closely allied forms, it is very desirable to confirm these observations " (Report, 

 1880, p. 326). There is, then, good work to be done here, but only with a high 

 microscopic power. 



Mytilaspis flavescens, Targ.-Tozz., Sign. 



Upon some lemons imported from Sicily I found, in August, some yellowish- 

 brown scales of a 3Iytilaspis which agree exactly with the description of this species. 

 They were full of eggs. In December, on lemons and oranges, I found a quantity 

 of female scales of the same species, but empty, and surrounded by young ones 

 varying in size from a mere speck to up to half the length of the mother. 



This is certainly the species described and excellently figured in all its stages 

 . by Mr. R. Beck in the " Transactions of the Microscopical Society of London," 

 vol. ix,!N".S., p. 47, pi. v (1861), under the title of " The Coccus found upon oranges." 

 He found his examples on imported oranges, and also on plants in this country. 



I have no doubt also that this is the Mytilaspis citricola described and figured 

 by Comstock in his " Report," 1880, p. 321, pi. vii, fig. 1, pi. xviii, fig. 3, and pi. xx, 

 fig. 3. He says it is one of the most common species of scale-insects found on 

 citrus trees in Florida, and that he has frequently found it on oranges imported 

 from Europe. It also occurs in Louisiana, and was imported into America in 1855 

 on lemons sent from Bermuda. 



Mytilaspis ulicis. 



Under this name I wish to record provisionally, in order that it may not be 

 lost sight of, a Mytilaspis that does not appear to have been hitherto noticed. It 

 may prove to be an undescribed species, but only an examination of the spinnerets 

 and abdominal fringe, such as is not now practicable for me, can decide if it be 

 distinct. On December 14th, on furze bushes (Ulex europaus) growing on the 

 most open and exposed part of Blackheath, far from any other shrub or any tree, I 

 found the scales not uncommon. They were on the young terminal shoots, not on 

 the bark, but closely fitted into the longitudinal grooves of the spines or the narrow 

 hollow of the leaflet at their base, and being of the exact width of their site, were 



