1922] NATUKAL SCIENCES OF PHILADELPHIA 207 



portion; median vein branching at end of proximal third, this 

 branch forming an acute angle and curving gently to run parallel 

 to median, ulnar and anal veins; these veins connected by six con- 

 spicuous (and distad one or more inconspicuous), straight, oblique, 

 pale cross-veins, which are directed proximad toward the sutural 

 margin, so that they are approximately parallel to the pale veinlets 

 of the scapular field. Supra-anal plate apparently slightly longer 

 than wide (partially pulled inward in this specimen), triangular, 

 with lateral margins convex and medio-longitudinally carinate. 

 Ovipositor moderately heavy; dorsal margin nearly straight, weakly 

 convex proximad, thence weakly concave and very finely serrulate ; 

 ventral margin broadly convex meso-distad to the acute apex, with 

 distal margin very finely serrulate; dorsal valves disto-laterad with 

 five weakly oblique, sharp but delicate, transverse ridges. Sub- 

 genital plate very small, delicate, truncate trigonal. Ventro- 

 external margins of median and caudal femora weakly lamellate. 

 Ventral femoral margins armed with the following compound 64 

 spinulae, 65 which are produced though very small only distad on 

 the external margins of the caudal femora. Cephalic internal 5 

 and 6, cephalic external and 3, median internal and 4, median 

 external 7 and 9, caudal internal 6 and 6, caudal external 14 and 

 15. Caudal tibiae with dorso-internal margin armed with a series 

 of closely placed, minute, compound spinulae and becoming 

 moderately lamellate distad. 



Allotype : c? ; same data as type. [Hebard Collection.] 



Agrees closely with the female, except as follows. Size very 

 much smaller. Pronotum more strongly tuberculate. Tegmina 

 slightly less acute at apex; stridulating field small, oblique vein- 

 and veinlets less contrastingly paler. Genitalia crushed, the sub- 

 genital plate is seen to be very slenderly produced, with paddles 

 shaped cerci. Spinulae of limbs even more compounded; those of 

 the ventral femoral margins numbering as follows. Cephalic in- 

 ternal 3 and 4, cephalic external 7 and 7, median internal 1 and 5, 

 median external 9 and 11, caudal internal 7 and 7, caudal ex- 

 ternal 16 and 16. 



General coloration cream color. Head with occiput laterad 

 washed with olive buff. Antennae cream color with a faint greenish 

 tinge. Pronotum ochraceous-buff dorsad, shading to olive buff 



64 See plate XVII, figures 9, 10 and 11. This remarkable type of femoral 

 spination is developed in the species of this and a number of other Pseudophylhd 

 genera, which follow in linear arrangement. 



66 The number of such spines is evidently so variable that probably little of 

 specific diagnostic value will be found. The actual number of femoral spines is 

 probably very rarely constant in any species of the Tettigoniidae, though the 

 average for a species, when sufficient material is available to determine it, will 

 probably often be found to differ from that for related species. It is for this 

 reason that we have given the exact spine count, in the present paper, for the 

 new species described; as an aid in beginning to find the averages for these species, 

 but certainly not to distinguish them from their allies on the basis of the exact 

 number of spines present. 



