TRIBE LEPIDOSAPHINI 273 



GENERA OF LEPIDOSAPHINI 

 a. Pygidium of adult female with groups of generacerores. 



b. Pygidium of adult female with lobes arranged in pairs, median 

 pair never fused into single projection. 



c. Pygidium of adult female always with plates cephalad of me- 

 dian pair of lobes. 

 d. Pygidium of adult female never with paraphyses. 



e. Adult female with mesothorax and metathorax never 

 separated by deep transverse constriction. 

 f. Pygidium of adult female without lattice-shaped thick- 

 enings; usually with four or five large distinct groups 

 of genacerores; preabdomen and pygidium frequently 

 with numerous brevaceratubae. 



g. Pygidium of adult female with four pairs of lobes; 

 second, third, and fourth pairs incised; median in- 

 cisura without plates; scale of adult female with 



dense white cottony or fluffy covering of wax 



Trichomytilus Leon, 

 gg. Pygidium of adult female never with more than three 

 pairs of lobes; second and third pairs sometimes in- 

 cised; median incisura with or without plates; scale 

 of adult female naked, not with dense white cottony 

 or fluffy covering of wax. 



h. Pygidium of adult female with median pair of 

 lobes rarely adjacent, if so, only at proximal ends 

 and not forming single semicircular area. 

 i. Adult female with pygidium and segments of 

 preabdomen with distinct, irregular, subtrans- 

 verse rows of oraceratubae, outlets of breva- 

 ceratubae; pygidium apparently always with 

 altaceratubae. 



j. Pygidium of adult female always with 

 plates in median incisura. 

 k. Pygidium of adult female always with 

 three pairs of lobes. — Type, Lepidosaphes 



bicornis G. & L Triaspidis MacG. 



kk. Pygidium of adult female always with 

 less than three pairs of lobes. 

 1. Pygidium of adult female always with 

 two distincit pairs of lobes, 

 m. Adult female with cephalic end of 

 body never provided with strongly 

 chitinized tooth-like projections, 

 n. Preabdomen with lateral margins 

 of its segments never produced into 

 claw-like processes. 



o. Adult female with cephalic end 

 of Ithe body never with a trans- 



