1913.] NATURAL SCIENCES OF PHILADELPHIA. 85 



pronotum subquadrate, the veiitrad margin strongl}' sinuate 

 cephalad. Tegmina very slightly exceeding the tips of the caudal 

 femora, inflated, the greatest breadth contained about three and 

 a half times in the length; costal margin with a moderate proximal 

 expansion, apex subobliquely rotundato-truncate ; mediastine vein 

 strongl}^ developed, no intercalarj^ vein present. Interspace between 

 the mesosternal lobes very slightly transverse, the angles of the 

 lobes obtuse; metasternal lobes separated by a narrow longitudinal 

 space. Abdomen moderately compressed; supra-anal plate rounded 

 trigonal; subgenital plate compressed, particularly dorsad, moder- 

 ately acute; cerci simple, terete. Caudal femora slightly less than 

 twice the length of the head and pronotum together, moderately 

 robust, paginse with well-marked scalariform pattern; caudal tibise 

 bearing ten spines on the external margin, eleven on the internal margin. 

 General color of the dorsum olive, the tegmina with a tendency 

 toward burnt umber mesad. Face and clypeus apple-green, labrum 

 whitish; eyes raw umber; antennae burnt umber, clove-brow^i on the 

 terminal segment. Gena? and lateral lobes of the pronotum drab, 

 paler ventrad; pleura pale greenish and umber; ventral surface 

 of the thorax and proximal portion of abdomen shining black, 

 remainder of abdomen vandyke bro^\^l wdth obscure longitudinal 

 bars of blackish-brown disposed as a pair of laterals and another of 

 ventrals, the two parallel ventral bars separated by a very narrow 

 median paler line. Wings with the base Chinese orange. Limbs very 

 pale olive-green, the caudal femora with some weak buff-yellow 

 dorsad and proximad, the genicular region and both ventral faces 

 blue-black, the internal face blue-blackish with several very narrow 

 pale olive-green bars; caudal tibise very dark olive-green with a 

 pale olive-green pregenicular annulus, spines black-tipped. 



Measurements. 



Length of body 20 mm. 



Length of pronotum 4 " 



Greatest caudal width of disk of pronotum 2.7 " 



Length of tegmen 15.8 " 



Length of caudal femur 12.5 " 



The type is unique. 



CEDIPODIN^. 



LACTISTA St&l. 

 Xactista pulchripennis Saussure. 



188-4. L[actista] pulchripennis Saussure, Prodromus CEdipodiorum, p. 143. 

 [Colombia; Porto Cabello, Venezuela.] 



Surinam. [U. S. N. M.] One cf . 



This species has previously been recorded only from Cache, Costa 



