ART. 17 MASKELL ASTEROLECAISriIN"AE MORRISON 23 



of '"■ male, 1894." These slides are not satisfactory. The unmounted 

 material is placed under the lot No. 358. The Maskell and Froggatt 

 descriptions should be consulted for descriptive information regard- 

 ing the galls and other deformations produced by this insect. No 

 supplementary slides of the female stages were obtained from the 

 Maskell type material, but one female was secured from cotype 

 material received through Professor Cockerell. 



Adult female. — External appearance and size as described by 

 Maskell; derm membranous throughout; antennae reduced to fiat 

 plates bearing some small setae; legs apparently wholly lacking; 

 spiracles rather stout, with several quinquelocular disk pores near the 

 opening of each; beak very short conical, 1-segmented; body with 

 a few scattered setae, these in fairly definite segmental arrangement 

 on the " tail," but in no case large or conspicuous ; no spiracular 

 spines ; no evident marginal setae ; 8-shaped pores, as in the genotype, 

 very much reduced in size and inconspicuous, ajbparently not at all 

 numerous; tubular ducts present, normal number and situation not 

 certain; body with normally quinquelocular disk pores near the 

 spiracles, with at least a few pores with a large number of loculi, 

 but the actual types, number, and arrangement of the derm pores 

 uncertain from the material available; no cribriform plates; minute 

 simple pores not definitely located ; " tail " well developed, though 

 much shorter than in the genotype, sides nearly parallel, with 

 rounded apex; anal ring situated close to apex of "tail," a simple, 

 roughly circular, rather heavily chitinized ring, with a short internal 

 continuation and a smaller ring ; genital opening placed only a little 

 anterior to the anal ring. 



Intermediate female. — As mounted, stout oval with the ends some- 

 what narrowed ; length 0.62 mm., width 0.52 mm. ; derm membranous 

 throughout ; antennae reduced to flat plates bearing two small setae ; 

 legs wholly lacking; spiracles rather slender, each accompanied by 

 from two to six normally quinquelocular disk pores; no other pore 

 types observed; derm bearing a few small setae and a somewhat 

 larger pair of apical setae; anal ring placed close to the posterior 

 apex of body, simple, incomplete. 



Larva (from Maskell slide specimens only). — Body as mounted 

 elliptical or somewhat narrowed behind; derm membranous; anten- 

 nae 6-segmented but rather short, the second segment somewhat the 

 longest, the apical two with stouter setae ; legs not unusual, the tibia 

 apparently quite short; body with some minute setae and with an 

 apical pair around one-iifth the body lenglh; no spiracular spines; 

 8-shaped pores not particularly conspicuous, although quite evident, 

 with only a submedian and marginal row on each half of body, the 

 incomplete intermediate row often present lacking in this species; 



