TRIBE ASPIDIOTINI 423 



small, about five times its width from caudal margin and fifteen from 

 vulva; genacerores 0-2(2-5)2-5; mesocalles fused and distant from 

 latacalles. Arizona on Covillea. covilleae Ferris. 



SPECIES OF CONSTOCKIELLA 



a. Pygidium with six groups of genacerores. 



b. Pygidium with genacerores 4-6(4-7)7-15; caudal margin deeply and 

 roundly notched at meson, pair of short setae in notch; each 

 lateris with five long setae and three short ventral setae located 

 just within margin; four dorsal oraceratubae in front of notch 

 in two rows, two or three rows extending length of pygidium on 

 each side of anus; anus located five times its width from caudal 

 margin and about one-half its width cephalad of vulva. Florida, 



Guadaloupe Island on Erythea, palmetto sabalis Comst. 



bb. Pygidium with genacerores 11-15(7-10)14-17. Mexico on palms. __ 



sabalis mexicana Ckll. 



aa. Pygidium with five groups of genacerores; margin with lobes little 

 developed, represented by three pairs of broad low rounded promi- 

 nences, all wide apart, incisurae and especially lateres irregular with 

 more or less angular prominences; sides of caudal part of insect 

 finely transversely striate; setae and pectinae or plates not notice- 

 able; paraphyses and densariae wanting; dorsal oraceratubae many, 

 row of transverse ones; genacerores 5-6(21-22)22-23; scale long, oval, 

 moderately convex, rough, grayish brown. Chile on Chisquea. This 



like the type species has many characteristics of the Diaspidini 



river ae Ckll. 



SPECIES OF LIGULASPIS 



Pygidium with three groups of genacerores, sometimes almost united into 

 single group, mesogenacerores 27, latagenacerores 106; pygidial mar- 

 gin with five plate-like projections, mesal longest, narrowest, three- 

 lobed, others irregularly notched and toothed; lateral margin of two 

 caudal segments of preabdomen chitinized and plate-like; oraceratubae 

 numerous on pygidium and segments of body; anus located just caudad 

 of mesogenacerores; mesospiracerores and metaspiracerores 36. 

 Odonaspis janeirensis Hemp. BraEil on grass janeirensis Hemp. 



SPECIES OF ODONASPIS 



Pygidium with single fused median lobe with prominent lateral notches, 

 other lobes obsolete; each lateris with four prominent indentations 

 from which longitudinal thickenings extend, indentations limited by 

 angular teeth on cephalic side, serrate between indentations; gena- 

 cerores in two converging groups, each consisting of 80-90; mesospira- 

 cerores and metaspiracerores less than 10; anus nearer vulva than 

 caudal margin. Odonaspis secreta saccharicaulis Zehnt., Odonaspis 

 secreta greeni Ckll. Japan, Hawaiian Islands, Java, Ceylon on bam- 

 boo, Arundinaria. secreta Ckll. 



SPECIES OF BERLESASPIDIOTUS 



Pygidium without lobes, plates, or pectinae; no mesal indentation, in- 



