16 Transactions. — Zoology. 



In cases where the trees attacked are accessible to applications of a 

 remedy, I should say therefore that a strong solution of common soap, 

 applied by a syringe in dry weather, might be found to be the best. 

 Doubtless, in large plantations of tall trees say of many acres, especially if 

 the insect is well established, it would be difficult to apply any remedy at 

 all. 



General Description of the Insect. 



Suggested name — Kermaphis pini, Koch, var. lavis. 



Anisophleba pini, Koch. 



Plate VII , figs. 1-11. 



Occurs in colonies surrounded by masses of white cottony secretion, 



clothing the twigs of pine trees. This secretion contains great numbers of 



apterous oviparous females, with ova and young larva?. 



Eggs oval, yellow or brown, length about g 1 ^ inch, not pedunculated 



(fig- !)• 



Young larva just hatched, yellow, elongated oval, flattish : body seg- 

 mented, the segments diminishing to the anal extremity (fig. 2): eyes brown, 

 conspicuous. Antenna (fig. 3) of three joints, each numerously ringed, the 

 third joint being longer than the other two together ; foot normal of 

 Aphididse : rostrum not longer than the body ; a few short spines on the 

 segments. The larva is somewhat active. 



Apterous oviparous female dark brown in colour, semiglobular, convex 

 above, flat beneath, resembling somewhat the Coccid insect Rhizococcus 

 (fig. 5). Length from -^ to g 1 ^ inch, breadth and height rather less. Body 

 segmented, but without spots on the dorsum and sides. Antenna (fig. 7) 

 very small, of three (?) atrophied joints, the last bearing some hairs. Foot 

 (fig. 9) normal of Aphididse. Abdomen ending in four minute but some- 

 what strong spines (fig. 8). Cornicles (honey tubes), none, unless the 

 spines just mentioned may answer to them. When the insect has been 

 macerated in potash and the interior substance expelled, the skin is found 

 to be covered with numerous small circular orifices arranged in groups, 

 whence is secreted the white cotton. 



I am not acquainted as yet with the male, nor with the winged state of 

 the female. According to Buckton (British Aphides, vol. iv., p. 41), the 

 winged forms of Chermes pini are also not exactly known. 



This insect differs from C. (Anisophleba) pini in the absence of peduncles 

 in the eggs, and from both that and C. corticalis in the absence of spots on 

 the dorsum and sides, and in the form of the female antenna. I give for 

 comparison (fig. 11) a copy of Buckton's figure of the antenna of C. corticalis. 

 Probably also the spines at the extremity of the abdomen may be distinc* 

 tive. 



