158 THE CANADIAN ENTOMOLOGIST. 



COCCID^: OF BRITISH NORTH AMERICA. 



BY GEORGE B. KING, LAWRENCE, MASS. 

 (Continued from J'ol. XXXIII., page jj6, /go/. J 



Eulecanium fraxini, n. sp. — Adult $ scale 6 mm. long, 5 broad, 2 

 high ; some individuals are practically circular in outline and variable in 

 size. In July the scales are well covered with a grayish powdery 

 secretion ; this being removed they are reddish brown, considerably 

 wrinkled and pitted, surface shiny, texture thick. 



Boiled in potash the derm becomes very clear and transparent, 

 showing some large gland-pits 24//. in diameter. Mouth-parts, legs and 

 anal plates tinged with yellow. Antennae practically colourless, of 7 

 joints, measuring in /j. as follows : 



Joint 1 (32) 2 (48) 3 (60) 4 (36) 5 (28) 6 (20) 7 (40) in ,1 



II 24 II 44 M 64 II 40 II 24 II 20 II 36 



11 40 11 40 11 68 ti 56 11 24 11 24 n 48 

 11 40 11 44 m 68 11 56 11 24 11 24 11 52 



The last two lines of measurement seem to be of the normal type 

 with a formula of 34721 (56). 



Legs thin ; front leg, coxa 84. Femur x trochanter 180. Tibia 136. 

 Tarsus 60 in length. Middle leg, coxa 108. Femur x trochanter 176. 

 Tibia 120. Tarsus 56. Hind leg, coxa 120. Femur x trochanter 196. 

 Tibia 132. Tarsus 64. 



The average width of the legs, coxa 52, trochanter 52. Tibia 24. 

 Tarsus 16. Spines of lateral clefts in threes, nearly of equal width and in 

 length 36 and 56 /x, respectively. Marginal spines 24 /x long. Rostral 

 loop long and stout. 



Hab. — Ottawa, Ont., on twigs of white ash ( ' Fraxinus Americana). 

 Coll. Dr. Fletcher, November 2, 1901, and found by me at Andover, 

 Mass., July 16, 1899, also on white ash. The slide mount which was 

 prepared at that time does not show the derm gland-pits, but they 

 were distinctly seen when the mount was made. 



The scales have considerable superficial resemblance to Eulecanium 

 cerasifex, Fitch, and E. cynosbati, Fitch. Structurally it differs from 

 Cynosbati in not having 7x8 jointed antennae, and in the form of 

 7 joints which has a very long third joint. 



