1921] NATURAL SCIENCES OF PHILADELPHIA 203 



plates, which are attingent distad; the sinistral as long as broad 

 and nearly triangular, with broad apex rounded; the dextral twice 

 as long as broad and nearly rectangular, with similar apex; fitting 

 tightly between the bases of these styles is a triangular plate, with 

 dextral margin curled slightly caudad and armed with minute, 

 sharp, straight teeth, which slant slightly proximad. Armament 

 of limbs, pulvilli, tarsal claws and arolia as characteristic of the 

 genus. Succeeding tarsal joints only half as long as caudal meta- 

 tarsus. 



Allotype: 9 ; same data as type, but taken February 10, 1913. 

 [Acad. Nat. Sci. Phila.] 



Agrees closely with type in coloration, color-pattern and in 

 structural features except the following. Interocular space slightly 

 over half width between antennal sockets. Dorsal surface of abdo- 

 men unspecialized. Supra-anal plate very strongly transverse, the 

 free margin very weakly obtuse-angulate convex on each side to 

 the weakly concave median portion. Subgenital plate with lateral 

 margins feebly convex and hardly convergent to opposite cereal 

 bases, thence rounding strongly and oblique, broadly concave to 

 distal portion, which is strongly V-emarginate, the apices thus 

 formed broadly rounded, the emargination occupied by a soft 

 mantle. 



Head, underparts and limbs weak ochraceous-tawny, the occiput 

 slightly deeper than the face, abdomen ochraceous-tawny with 

 styles largely suffused with chestnut brown. Maxillary palpi light 

 buff, the half of the distal joint toward the ventral margin heavily 

 suffused with mummy brown (this showing variation in width in 

 the series), broader on the caudal than on the cephalic face. An- 

 tennae with first joint ochraceous-tawny, succeeding joints blackish 

 mummy brown, the proximal joints sometimes ochraceous-tawny 

 dorsad. Pronotum in all but discal portion transparent, faintly 

 tinged with buckthorn brown and with a weakly defined, narrow, 

 opaque margin of whitish about the disk; disk tawny, with two 

 large suffusions of mummy brown, which unite caudad and send 

 a very short stout ray cephalad into the median paler area. In 

 intensive examples these suffusions almost completely obliterate 

 the paler median area, leaving only a medio-longitudinal line and 

 fleck of ochraceous-tawny cephalad. Tegmina with marginal field, 

 areas between discoidal and median veins and anal sulcus and the 

 two mesal areas between veins of anal field transparent, very faintly 

 tinged with buckthorn brown; remaining portions more heavily 

 tinged with buckthorn brown, becoming cinnamon-brown in proxi- 

 mal area of costal veins proximad and tapering to a weak mars 

 brown suffusion in this area distad; the sutural margin, particularly 

 in the anal field and area between anal sulcus and first vein of anal 

 field, rather heavily suffused with mars brown; a broad suffusion 

 of ochraceous-orange sweeping obliquely across the discoidal field, 



