450 THE coccroAE 



four ventral and three dorsal, dorsal and ventral seta located on 

 each lobe-like projection; anus large, about eight times its width 

 from caudal margin and three times from vulva. — Diaspis arizonica 

 Ckll. (Ferris.) — Arizona on Prosopis arizonica Ckll. 



SPECIES OF OBTUSASPIS 

 Pygidium without lobes, pectinae, or plates; margin with about thirty 

 subquadrate, irregular, truncate, closely adjacent projections; meson 

 of caudal margin slightly incised with largest projection forming lat- 

 eral limits of incision, three much smaller projections in incision, 

 others successively smaller cephalad; pygidium short, very broad, 

 broadly rounded; dorsal oraceratubae small, few in number; anus and 

 vulva nearly superimposed, located near middle of cephalic half; pygi- 

 dium with inverted V-shaped thickenings with three large pores or 

 minute setae laterad of each side of V; scale of adult female dense, 

 hard, capsulate, two halves slightly separated at caudal end, probably 



a puparium. — British East Africa on roots of Chloris 



rhizophila Newst. 

 SPECIES OF LEONARDIANNA 



a. Pygidium with four pairs of paraphyses, eight paraphyses, mesa! 

 pair shortest, fourth pair longest, second and third pairs subequal; 

 margin of pygidium with four rounded lobular projections on each 

 side, entire, bearing three distant setae on cephalic half; scale dull 



grayish brown. — California on Bigelovia bigeloviae Ckll. 



aa. Pygidium with seven subequal paraphyses, one located on meson, 

 others in pairs; margin of pygidium with three or four rounded lobu- 

 lar projections on each side; cephalic half of pygidium on each side, 

 preabdomen, thoracic segments, and margin of head with scattered 

 setae and numerous small circular pores, latter not extending 

 cephalad of mesospiracles; surface of pygidium longitudinally 

 striate; margin of pygidium on each side finely dentate; mesospira- 

 cerores 3-8; anus and vulva superimposed, located at middle of pygi- 

 dium. — Jamaica on Pimenta. pimentae Newst. 



SPECIES OF FROGGATTIELLA 

 a. Pygidium with two pairs of paraphyses, second pair very slightly 

 longer than first; pygidial margin with broad mesal emargination, 

 another adjacent to each second paraphysis, two distant deep angu- 

 lar notches cephalad of these, minutely irregularly serrate; pair of 

 setae caudad of caudal end of each paraphysis, another caudad of 

 caudal notch, two distant setae on each side of areas on each side of 

 cephalic notch ; anus small, located cephalad of line drawn through 



cephalic notches; spiracerores present. — Ceylon on Arundinaria 



inusitafa Green, 

 aa. Pygidium with three pairs of subequal paraphyses, three or four 

 times as long as broad; pygidium incised on meson with ihrte prom- 

 inent angular equidistant teeth on each side with smaller teeth be- 

 tween them; mesal incision provided with dense brush of long taper- 

 ing setae, distal ends meeting in point; anus located near cephalic 

 end of pygidium; dense chitinous area with numerous minute cir- 

 cular pores. — Ceylon on Gigantochloa peniciUata Green. 



