254 PROCEEDINGS OF THE ACADEMY OF [Vol. LXXIV 



As in Alloteratura, a single species is before us which has the 

 genicular lobes of the caudal femora unispinose. Redtenbacher 

 and Karny's characterization of the genus must, therefore, be 

 modified in this respect. The subgenital plate in the female sex 

 shows great specific differences. The cephalic coxae are armed 

 with a spine in all of the species before us except the aberrant 

 gemmicula and aglaia here described. In the species before us the 

 longest cephalic tibial spines exceed the width of the tibia at their 

 bases by one and one-half to slightly over four times. 



Xiphidiopsis dicera new species. Plate XIX, figures 10, 11 and 12. 



This insect is distinguished in both sexes by the darkened and 

 rounded tips of the genicular lobes of the caudal femora. 



In the male, the ultimate tergite is produced mesad in a small 

 two-horned process, the cerci are flattened, weakly incurved, with 

 a blunt dorso-internal projection proximad. 



In the female, the subgenital plate is of the same type as found 

 in X. lita Hebard (described as probably adventive in Hawaii), 

 but the triangularly produced median portion is more ample, with 

 apex more acute. 



The cephalic tibial spines are longer than in any other species 

 before us, those of the males being somewhat longer than those of 

 the females at hand. 



Type: cT; Singapore, British Straits Settlements. (From C. F. 

 Baker.) [Hebard Collection, Type no. 824.] 



Size rather small for the genus, form slender. Vertex showing 

 a subobsolete linear sulcation. Last joint of maxillary palpus 

 equal in length to fourth, enlarging suddenly near the transverse, 

 truncate apex. Pronotum elongate, with dorsal surface very 

 feebly convex, the metazona produced caudad and equal in length 

 to the prozona; cephalic margin of lateral lobes with ventro- 

 cephalic angle rounded and broadly obtuse-angulate, margin ven- 

 trad more strongly rounded, caudal margin weakly concave at 

 humeral sinus and slightly more decidedly concave opposite the 

 very large, apert, thoracic foramen. Tegmina and wings fully 

 developed. Ultimate tergite moderately produced, its caudal 

 margin shallowly concave between cereal bases, its surface mesad 

 raised and produced caudad in a pair of cylindrical projections, 

 each slightly over twice as long as its basal width, which diverge 

 and form a right-angle between their bases. Cerci moderately 

 stout, flattened in distal portions and twisting so that meso-distad 

 the flattened surfaces are oblique and distad they are vertical; 

 internal surface with a large, flattened, blunt tooth at end of 

 proximal third, this margin showing a feeble convexity in median 



