TRIBE ASPIDIOTINI 449 



straight, near to but not touching, distal and lateral margins 

 convex, lateral angles not conspicuous, faint lateral notch; second 

 pair of lobes long, longer than broad, two distal notches, mesal mar- 

 gin nearly straight, distal and lateral contours pointed; setae, par- 

 ticularly of each lateris, very long, longer than median pair of lobes; 

 each lateris with broad, blunt, tooth-like projections; anus located 

 near caudal margin. — Sokotra, Africa on Dracaena, soeotrana Lindgr. 

 aa. Pygidium with densariae distinct, caudal one largest, mesal mar- 

 gin much larger, nearly twice, than lateral; median pair of lobes 

 large, mesal margins convex, distant, lateral margin oblique, notched, 

 distal end bluntly rounded; second pair of lobes similar to median, 

 much smaller, lateral notch; setae prominent; (iach lateris without 

 tooth-like projections, entire or finely serrate; anus nine times its 

 width from caudal margin. — South Africa on Ehretia. -.ehretiae Brain. 



SPECIES OF TARGIONIDEA 

 a. Pygidium with median pair of lobes with three distinct lateral 

 notches, large, triangular, subadjacent, convergent; densariae want- 

 ing in median incisura, large, two margins subequal in second in- 

 cisurae, smaller in third, margins subequal; setae long and stout, 

 longer on median pair of lobes, seven on each side, four dorsal and 

 three ventral; pygidium of first nymph with single pair of lobes and 



without pectinae or plates. — Canary Islands on Campylanthus 



campylantM Lindgr. 

 aa. Pygidium with median pair of lobes with single notch, large, pro- 

 jecting, subadjacent; second incisurae bounded by small, unsymmet- 

 rical, triangular, notched, lobe-like projections; densariae of second 

 incisurae with margins subequal; setae long and stout, subequal or 

 longer than median pair of lobes, six on each side, three dorsal 

 and three ventral.^Denmark on Euphorbia, Olea. lenticxclaris Lindgr. 



SPECIES OF CIRCULASPIS 

 Pygidium with deep mesal indentation and three others on each side; 

 projections of margin of pygidium between indentations serrate; "con- 

 spicuous cylindrical canal" extending cephalad from mesal cleft over 

 half way to anus, terminating in "brush of small tubular ducts;" dor- 

 sal and ventral surfaces dotted with minute circular pores with thick- 

 ened rims; anus near cephalic end of pygidium; mesospiracerores and 



metaspiracerores numerous. — India on bamboo 



canaliculata Green. 



SPECIES OF RUGASPIDIS 

 a. Pygidium with three indentations on each side; mesal projection with 

 slight mesal groove; margin of pygidium shallowly crenulate; anus 

 located slightly cephalad of vulva, about fifteen times its width from 

 caudal margin; mesospiracerores present; dorsal oraceratubae nu- 

 merous, irregularly placed. — California on grass.. -£?)-omfnis Bremner. 

 aa. Pygidium with numerous slight indentations, margin appearing to 

 have three pairs of indefinitely defined lobes with coarse crenula- 

 tions; dorsal oraceratubae numerous, without definite arrangement, 

 associated more or less with wrinkles of surface; setae long, slender, 



