X54! [Di^cember, 



Gosford Park (Earl of Wemys, East Lothian), and near Ayton (Berwickshire) ; 

 still more recently I observed it on beech trunks and roots at Polton Bank (near 

 Hawthornden, Midlothian), on both sides of the road to the railway station.' " 



Following up Signoret's indication of Baerensprung's Coccus fagi, 

 I find it described in D'Alton and Burmeister's " Zeitung fiir Zoologie, 

 Zootomie uud Palseozoologie " (1849), vol. i, p. 174, thus: — 



" C.fagi. 5 . Lutea, ovata, abdominis apice hirsuta, capite minuto, antennis 

 hrevihus crassis. Long., f lin. 



" On the beeches in the Berlin Thiergarten. The females, as in the foregoing 

 species (C. sfrobi), are enveloped in a thick felt, which appears to proceed especially 

 from the hinder part of the thick and soft sulphur-yellow insects. The antennae are 

 very short and thick, and near them the black eye-points (Augenpunkte). The 

 short legs are almost entirely retracted into the plump body. 



" In December I found on the same then leafless bushes the white felt packs, in 

 which the females were no longer to be seen, but numerous eggs and larvse instead. 

 The latter had all the same elliptic form, two red eye-points, and short, five-jointed 

 antennae, which had some setaceous hairs at the extremity. The last segment of the 

 abdomen was furnished with two pairs of papillae, the inner smaller than the outer, 

 and some setaceous hairs between them. 



" Among the larvae was a strongly-haired, sulphur-yellow Acarid." 



I think it is clear from the foregoing that my insect is the Coccus 

 fagi of Baerensprung, the only real difference in the descriptions 

 being in the length of the body, which, as given by Baerensprung, is 

 somewhat in excess of that I find. It is also sure that it is the same 

 as that recorded by Hardy, and which Walker described under the 

 name of Coccus fagi, Walk., doubtless unaware of Baerensprung's 

 previous description under the same name: the length, "2 lines," is a 

 palpable error. 



The genus Pseudococcus, Sign , is not exactly the same as the 

 original Pseudococcus, Westwood, founded on Coccus adonidum, C. cacti, 

 &c. ; but not to argue nor to put too fine a point on the matter, the 

 genus, in either case, may be regarded as, like Mercutio's wound, not of 

 strictly definite dimensions, and like it also — " 'tis enough, 'twill serve " 

 — for this occasion. 



Dacttlopius desteuctoe. 



Dactylopius destructor, Comstock, Report for 1880 (1881), p. 342, pi. xi, fig. 3, ?, 

 pi. xxii, fig. 2, S . 

 ? . Adult oval, 3 — 4 mm. long, 2 mm. wide. Dull brownish-yellow, legs and 

 antennae concolorous. Surface of body, and the under-side also, but thinly covered 

 with fine, white, granular, waxen secretion, so that the ground-colour shows through 

 it faintly, the result being often a livid appearance. The marginal projecting ap- 

 pendages (17 on each side), white, short, in length sub-equal, except that in some 

 examples two of the posterior ones are a mere trifle longer. Antennaj 8-jointed, 8th 

 joint longest, 4th shortest ; tarsi about half the length of the tibire. Eggs yellow, 

 laid in a cottony mass, which eventually covers the ? . Young larvre yellow. 



