102 WM. G. DIETZ, M.D. 



with u more or less prouounced silky lustre ; metallic tints in some 

 species, absent in others. Male with anal tuft of ochreous, erectile 

 scales; lateral claspers slender, geniculate at base and recurved 

 upward, with slender, finely setulose appendages. The antennal 

 structure has been mentioned before ; another secondary sexual 

 character consists in a scale-cushion of the anterior tibia above the 

 inner apical angle. Female with protruding ovipositor. I regret 

 to state that to the best of my knowledge, nothing is known of their 

 primary stages. 



The following genera have been recognized : 



Veins 4 and 5 of fore wing stalked (PI. VI, fig. 3a). 

 Vein 9 free (PL VI, fig. 3a). 

 Palpi of moderate length and distinct in both sexes, terminal joint depressed ; 

 second joint of % with sensitive area within; sim])ly rounded in the 



female (PI. VI, fig. 2a and 2b) Ploiophora. 



Palpi of unequal length in the sexes; very short and rudimentary in the 

 male, distinct, with the terminal joint pointed in the female (PL VI, 



fig. 3(; and 3(1) ■ Figritia. 



Palpi equal, very small and indistinct in both sexes (PI. VII, fig. 8a and 86). 



Epigritia. 



Vein 9 of fore wing out of 7 (PL VII, fig. lOrt) Pseiidopigritia. 



Veins 4 and 5 of fore wing not stalked (PL VII, fig. 12(() Dryope. 



PLOIOPHORA gen. nov. 



Characterized and differentiated from the other genera of the 

 group by the peculiar formation of the labial palpi in the male. 

 Labial palpi moderately long, ascending but scarcely attaining the 

 middle of the front. Male: first joint porrect and nearly as long as 

 the second, latter ascending with an elongate, smooth sensitive area 

 within, outside scaly ; third joint minute, depressed, scaly ; in re- 

 pose, the palpi are folded back into a glabrous frontal groove. In 

 activity the palpi are thrown forward and diverge outwardly in such 

 a manner that the inner surface becomes inferior, and the third 

 joint is deflected outward. Female: labial palpi feebly compressed, 

 first joint short, second entirely scaly, thii'd nearly as long as the 

 second, pointed, depressed. Veins 4 and 5 of fore wings stalked, 9 

 free. 



The second joint of the pal{)i in the male has a certain resem- 

 blance to a boat, hence the name. The front of the male has a tri- 

 angular fossa for the reception of the palpi, scales divergent ; smooth 

 scaled and without fossa in the female. Otherwise the genus does 

 not difier from Pigritia proper. 



