350 [August, 



Cocoa palm loaves (from Barbados), Mr. D. Morris— Fiorinia pellucida and Mytil- 

 aspis buxi. 

 j Dictyospermum album (from Trinidad), Mr. Mclntire — Ischnaspis filiformis, My- 

 tilaspis buxi, Aspidiotus articulatus, n. sp., and Aspidiotus dictyospermi, n. sp. 



Cupania sapida (from Demerara), Mr. Mclntire — Aspidiotus longispina, n. sp., and 

 Planchonia fimbriata. 



Besides the above, other species have come under my notice from 

 other sources, and I will now enumerate those belonging to the genus 

 Aspidiotus. 



1. Aspidiotus neeii, Bouche. 



All the synonyms of this species will be found in Sign. Ess. s. 1. Coch., p. 60, 

 and a description {op. cit. p. 100, pi. i, iii and iv). Kep. U. S. Dept. Ag., 1880, Corn- 

 stock, p. 301, pi. iv, fig. 1, pi. xv, fig. 1. 2nd Eep. Corn. Univ. Exp. St., 1883, 

 Comstock, p. 63, fig. 4. Beit. z. Anat. und Hist. d. Pfianzenlause, Mark, 1876, figs. 



1. 4, 5, 6, 11, 12, 31, 33, 35. Ent. Mo. Mag., vol. xxiii, p. 151, Douglas. 



2. Aspidiotus ostee^foemis, Curtis. 



Douglas, Ent. Mo. Mag., vol. xxiii, p. 239. 



Mr. Douglas has already described this species, and has shown that it should 

 not be confused with the Diaspis ostreceformis, Signoret, in which opinion Prof. 

 Comstock concurred, and my own observations confirm those of Mr. Douglas. The 

 difference in the shape of the scales of the male at once distinguishes the two insects, 

 but besides this, the caudal margin of the two species shows a marked difference. 

 In Aspidiotus ostreaformis the inner lateral margins of the median pair of dorsal 

 lobes extend upwards encircling the anus, whereas in Diaspis ostreaformis the 

 median pair of lobes appear to have no immediate relation to the anus. I look upon 

 this as an important structural difference, for I have observed that the correlation 

 of the anus with the median lobes forms an important specific character. 



Abundant on pieces of bark of apple, plum and cherry, received from Mr. 

 Douglas. On the same bark were found in plenty Mytilaspis pomorum. I have 

 found Aspidiotus ostreceformis also on Calluna vulgaris in Portugal, associated on 

 the same plant with Mytilaspis pomorum. This fact deserves perhaps to be noted, 

 and I may mention that the <J scale of A. ostreceformis, when fully developed, is 

 sometimes of such an elongated oval shape, that it much resembles a young Mytil- 

 aspis, except that the larval skin of Aspidiotus ostreaformis always lies within the 

 limits of the scale. 



3. Aspidiotus peese^;. 



Aspidiotus persece, Comstock, Eep. U. S. Ag. Dept., 1880, p. 305, pi. xii, fig. 



3, pi. xiii, fig. 3 ; 2nd Eep. Corn. Univ. Exp. St., 1883, p. 65. 



This is one of Comstock's species, and there is no difficulty in recognising it 



from his full description and figures. I have found it on Anthurium Harrisii from 



Kew, sent to me by Mr. Douglas, and Prof. Comstock took it from the red bay 



(Persea carolinensis) . 



4. Aspidiotus eicus (Rile}' MSS.), Comst. 



A full description, life history and figures of this species by Comstock will 

 be found, op. cit., p. 296. 



