224 THE CANADIAN ENTOMOLOGIST 



remains within the body of the adult female. Spiracles large and 

 distinct. 



The absence of mouth-parts may be apparent only, as they 

 n]ay possibly be obscured by the heavy chitinization of the anterior 

 portion of the body. 



Penultimate stage. — Length (flattened on slide) 4.5 mm. 

 Globose in form. Derm everywhere quite heavily chitinized, 

 especially toward the posterior portion of the body, and every- 

 where beset with many short, spike-like spines. Antennae (Fig. 

 4) short and stout, six-segmented. Legs (Fig. 3) short and stout. 

 Mouth-parts well developed, with a mentum present. Anal tube 

 (Fig. 11) very heavily chitinized, its details not discernible in 

 my specimens. In the specimens at hand the anal tube of this 

 stage remains at the final ecdysis within the body of the adult 

 female, a circular area of the derm of the penultimate stage sur- 

 rounding the base of the tube remains attached to it, breaking 

 away from the shed derm of this stage, and thus leaving an open- 

 ing through which the eggs or larvae probably escape. Dermal 

 pores of the types shown in Figs. 6, 7 and 8, the type shown in 

 Fig. 7 being merely a more or less irregular chitinized ring. 



Second (?) stage.- — Except for the unchitinized derm and the 

 presence of but few spines, resembling the penultimate stage. 

 The anal tube (Fig. 10) chitinized only at the inner end. 



First stage. — In general much resembling an Icerya larva 

 (Fig. 12). Antennae (Fig. 1) 6-segmented, slender and presenting 

 a clavate appearance, bearing numerous short hairs. Legs (Fig. 

 2) slender. Posterior end of the body with a series of eight long, 

 slender setae. Derm beset with many pores of the type shown in 

 Fig. 6 and with a few pores of the type of Fig. 8, also with many 

 short, slender setae and toward the posterior end of the body with 

 short, tubercle-like spines. Anal tube well developed, chitinized 

 only at the inner end. 



Material examined. — Specimens in the Stanford collection 

 from Mimosa sp., Zapotlan, Mex., C. H. T. Tow^nsend collector. 

 Received from T. D. A. Cockerell and evidently a portion of the 

 material recorded by him in 1902. 



Notes on the species. — The adult female has not heretofore 

 been described, that which both Hempel and Cockerell described 



