246 THE CANADIAN ENTOMOLOGIST. 



a dark purple-brown with very distinct segmentation. Viviparous. 



After boiling in soda, derm colourless. Margin with small curved 

 spines. Lateral incisions with long, stout, curved spine and two shorter 

 ones. Anal plates large, with blunt tips, bearing several hairs and notched 

 on outer margin, together forming a square. Each plate has a distinct 

 brown projection into the body. Anogenital ring with six hairs, which 

 are very long, extending Yi over the plates. Legs stout, coxa and femur 

 each with a stout hair. Feniur Yz longer than tibia. Tarsal digitiiles 

 long, knobbed hairs, digitules of claw broad and thick. Claw stout and 

 curved. Antenna^ 7-jointed, formula: 34721 (56). Joints i and 2 with 

 two hairs each. Joints 4, 5, 6 and 7 with several hairs. Joint 3 very little 

 longer than 4. Joints 5 and 6 equal. Larva lemon-yellow, very flat, 

 shiny, oval, about twice as long as broad. 



Hab. — On tuberous plafit in Japanese Nursery, at San Jose', Cal. 



Eticyrtus flavus and Coccophagtcs /ecanii were reared from this 

 species. 



Supplementary Note, and Notice of a New Eriococcus. 



BY T. D. A. COCKERELL, N. M. AGR. EXP. STA. 



Mr. Ehrhorn has been so kind as to send me examples of all his new 

 species above described, and I have also been allowed to examine his 

 type slides. The following remarks are offered as a result of the exami- 

 nation of this material. The measurements of antennte and legs given 

 are all in thousandths of a millimetre : 



Eriococcus adenosto?nce, Ehrh. — This is a distinct little species, with 

 a pure white sac. 



The following measurements will help to separate several of our 



species of Eriococcus : 



Antennre of aduh female: Segments — 1234567 Formula. 



E. adenostoiHie, Ehrh ? 25. 33. 25. 16. 16. 31. 37(24)(56). 



E. neglechis, Ckll ? 16. 33. 11. 14. 25. .. 36254. 



E. quercus, Comst ? 47. 53. 50. 22. 25. 42. 342765. 



E.Ti7isleyi,Ck\\., n.si^. {a).... '? 31- 45- 45- 25. 19. 25. (34)2(57)6. 



„ „ „ (b) ? 28. lOi. 16. 14. 28. .. 3(26)45. 



Of course there is considerable variation, and these figures merely 

 represent average specimens selected. The first segment is more or less 

 ringlike, and its length could not be well measured. 



