386 ENTOMOLOGICAL NEWS. [Nov., I9II 



physes in the lobular area ; plates broad, branched at tip, equaling the 

 lobes in length, two median, two in first lateral incision and three in 

 second lateral incision ; spines short, inconspicuous ; anal opening large, 

 oval, in longest diameter more than twice lobe length, less than twice 

 its own length from apex ; paragenitals, counting from the anterior 

 group, 2-4, 5-7, 4-5, not massed, no parastigmal pores ; dorsal pores 

 large, narrow, those easily seen are row of three extending from sec- 

 ond lateral incision, somewhat double row or group of from five to 

 seven at about the middle point of the side of the pygidium, and a 

 group of seven or eight at the basal or anterior lateral angle of the 

 pygidium ; the actual number of pores is greater, as shown by the 

 presence of the internal secretory organs, namely, median one, first 

 incision 3, second incision 5, the laterals 6-8 and anterior angle 8; basal 

 thickenings not prominent, obscure ; ventral thickenings normal and 

 not much developed. 



Type. — Bureau of Entomology, No. 14,185. On Japanese 

 hemlock {Tsuga sp.), received from Dr. J. B. Smith, March 11, 

 1910, who collected it in the course of his quarantine work 

 from stock imported from Japan. 



From the specimens submitted, the plant is apparently heavi- 

 ly infested, chiefly on the underside of the leaflets. The condi- 

 tion indicates a scale pest capable of doing much damage. 



This scale insect is a good example of the difficulties met with 

 in attempting to subdivide the old and unwieldy genus Aspi- 

 diotiis into subgenera. The character of the lobes, the promi- 

 nent serrated, or toothed, projection laterad of the lobes, and 

 large anal opening remind one very much of the species of As- 

 pidiottis (s. str.) which infest pines. It comes, in fact, very 

 close to the Chinese species described by the writer as Aspidio- 

 tus meycri. The strong development, however, of the para- 

 physes is a feature found in none of the pine species referred 

 to, and allies it with the genus (or subgenus) Diaspidiofus. The 

 paraphyses seems to be a fairly definite and prominent character 

 in Diaspidiotus and most of the genera or subgenera erected 

 from the old genus Aspidiotits. In the case of Aspidiotus (s. 

 str.), the paraphyses are reduced to mere points, or are prac- 

 tically wanting, but all gradations between this condition and 

 well developed paraphyses are found, indicating plainly the en- 

 tire artificialitv of classification based on this character. In 



