THE CANADIAN ENTOMOLOGIST. 311 



Rhinebeck, New York (Dyar) ; Rhinebeck, N. Y., July 5 (Miss L. J. 

 Hoff ) ; Fordham, N. Y. (G. Gade) ; Staten Island, N. Y., June 25 and 

 July 16 (coll. Beutenmliller) ; District of Columbia, July 18 (coll. C. V. 

 Riley); Washington, D. C, October 10 (A. Busck) ; St. Louis, Missouri,, 

 issued July 3 (C. V. Riley, breeding No. 2563) ; Texas (coll. Beuten- 

 mliller). The specimen taken in October is very dark in colour, 

 blackish, the markings being only faintly indicated. 



NEW COCCID^ FROM CALIFORNIA. 



BY EDW. M. EHRHORN, MOUNTAIN VIEW, CAL. 



Xylococcus quercus, n. sp. (Plate 7, figs, i and 2.) 



Egg quite large, of a light orange colour. 



Young larvcp- dark orange-red, active, body broadly oval, about yz 

 mm. long. Legs and antennae light brown, well developed. Antennae 

 short, 6-jointed. Joint r stoutest, joint 6 longest, and joint 4 shortest. 

 Formula: 651234. Joints 2 and 5 with three bristles. Joint 6 with 

 numerous long stout bristles. Legs moderately long, with femur quite 

 swollen. Tarsus longer than tibia. Digitules of tarsus fine hairs ; those 

 of claw long stout clubs curved upwards. Each segment of abdomen 

 bears a backward directed short stout spine. On each side of anal 

 tube is a long fine bristle. Anal tube large, with numerous stout spines. 

 Stigmatal tubes well developed. 



% second stage, body crimson, shiny, nearly spherical, about xy^, 

 mm. long, i mm. broad, surrounded by cottony and waxy secretion, 

 Antennte and legs wanting. Anal tube well developed, producing a 

 glassy rod, like a stout white hair, rather brittle. Last segment of body 

 dark brown. When cleared in K. H. O., surface of body finely granu- 

 lated, more so near caudal end. Stigmatal tubes are large and well 

 defined. There are numerous spines and gland openings scattered over 

 the body. 



V third and fourth stages very similar to second stage, but larger in 

 each case from the preceding, and varying in the further development of 

 stigmatal and anal tubes, glands, spines, etc. 



Adult $ head, thorax, legs and antennae reddish-brown, abdomen 

 blackish-brown, segmentation distinct. There is a distinct constriction 

 between the thorax and abdomen. Length of body about 5^ mm., 

 breadth 2)^ mm., quite convex above. Ventral side of abdomen con- 

 cave, with revolute margins. Insect quite active. When ready ta 



