251 



Apkidct. 



[1], vol. x., p. 127 ; and for fig. of insect, P. J. [1], vol. vii., pp. 310, 

 811. Moquin-Tandon, Sled. Zoology, p. 155. 



They are said to be produced on the branches of Rhus semialata, 

 i/urr. See Eepert. filr Pharm., 8 Reihe, Bd. v., Heft, i., p. 26, 1850 ; 

 also Hanbury Science Papers, p. 200. 



b. Japanese galls. 



Note. These galls, which are imported from Japan, are rather smaller 

 than the Chinese galls, and of a browner colour. They are probably 

 produced on a species of Hhus in Japan. For fig. , see Technologist, vol. i., 

 p. 183; vol. ii., p. 234. 



COCCIVM. 



7GG. Coccus CACTI, L. (Cochineal Insect.) 

 a. Insects in situ, preserved wet. 

 6. Ditto, preserved dry. 



Note. For fig. of the plant on which the insect feeds, and for figs, 

 of the insect, see Per. Mat. Med., vol. ii., pt. ii., pp. 758, 759. 



c. Male and female insects with their cocoons. 

 '. Cocoons. 



e. Silver grain cochineal, from Mexico. 



/. Good commercial specimen. 



g. Granilla. 



h. Ditto, sifted and garbled. 



i Cochineal garblings. 



j. Black grain cochineal, from Honduras. 



k. Ditto, inferior quality. 



I. Ditto, granilla. 



Note. The black grain cochineal differs in having been dried by artifi- 

 cial heat, by which the white secretion with which they are covered is 

 destroyed. Granilla consists of the very small insects. A white appear- 

 ance is sometimes given to dark cochineal by means of powdered sulphate 

 of barium. Specimen b waff presented in the living state by Dr. Dyce 

 Duckworth. 

 767. Coccus LACCA, Kerr. 



a. Stick lac, with a portion of the leaves and stem of 

 the plaut on which it was found. 



Note. This specimen was slightly damaged during the sea voyage. 



b. Light-coloured stick lac. 



c. Stick lac, from Patna. 



d. Ditto, from Siam. 



e. Ditto, from Singapore. 

 /. Kuby Button lac. 



g. Liver-coloured Button lac, from Bombay. 

 It. Orange-coloured Button lac, 1st quality. 

 Note. The different qualities of Button lac are known in commerce aa 

 " bloods." 



i. Garnet lac. 



