14 ACLERDA JAPONIC A. 



showing anal cleft with hairs of anal ring slightly 

 projecting (dorsal). X 250. 



Fig. 3. Anal ring with surrounding parts (ventral). 

 X 600. 



GENUS LEOANOPSIS (Targioni-Tozzetti). 



Prof. Targioni-Tozzetti established this genus in 

 1874, setting forth the generic characters briefly as 

 follows : " Margin wide, with a deep anal cleft ; anal 

 lobes obtuse, approximate ; antennae short, conical, of 

 six joints ; mentum (' Os ') narrow ; legs short, 

 stout ; tibiae truncate and anteriorly grooved ; tarsi 

 ovate, acute." In 1893 I ventured to extend the 

 characters of the genus in order to include a con- 

 generic species * possessing eight-jointed antennae 

 and more highly developed legs. In the following year 

 Mr. Cockerell adopted this extension and added his 

 Lecanopsis lineolatds, which also possesses eight-jointed 

 antennae, suggesting, however, at the same time, that 

 his insect apparently belonged to the genus or sub- 

 genus Spermococcus of Giard. In the absence of 

 material it is somewhat difficult to decide, but judging 

 from Mr. Cockerell's full description, I think that L. 

 lineolatse has been correctly placed. 



It is difficult to understand what Targioni-Tozzetti 

 means by the anteriorly-grooved tibiae, and all the more 

 so as he does not state whether the groove is longi- 

 tudinal or transverse. If I understand rightly, he 

 means that the end of the tibia is grooved for the recep- 

 tion of the tarsus, which is a character common to 

 many members of the Lecaniinae, and therefore of no 

 generic value. Unfortunately I do not possess a 

 description of Maskell's L. filicum, and cannot, there- 

 fore, say anything either with regard to its structure 

 or its habits. All the other known species are subter- 

 ranean in habit, and two of them are associated with 



* L.formicarum, Newst., 'Ent. Mo. Mag./ s.s., vol. iv, p. 205. 



