250 PROCEEDINGS OF THE ACADEMY OF [Vol. LXXIV 



to nearly twice the width of the tibia at that point) and a pair of 

 very small distal spines. Median tibiae tapering meso-distad 

 with distal portion slender, ventral margins armed with five (rarely 

 six) external and three or four internal spines and with a pair of 

 very small distal spines. Caudal tibiae with three pairs of short 

 distal spurs; ventral margins supplied with numerous short and 

 heavy spines, dorsal margins supplied distad with a few very small 

 and slender spines. 



In addition to the three new species here described, we assign 

 to the present genus the two Philippine species xiphidiopsis and 

 simplex, recently described by Karny as members of the genus 

 Teratura. ss It is very possible that the Japanese Teratura suzuki 

 Matsumura and Shiraki belongs neither to that or the present 

 genus, but to the genus Xiphidiopsis. 



Alloteratura penangica new species. Plate XIX, figures 1, 2 and 3. 



From the other known species of the genus the present may be 

 distinguished by its smaller size, pronotum with humeral sinus 

 very weak and reduction in the organs of flight. 



The male before us differs further, from the known males of 

 other species, in the distinctive but much less highly specialized 

 genitalia. 



Type: <f ; Island of Penang, British Straits Settlements. (From 



C. F. Baker.) [Hebard Collection, Type no. 820.] 



In addition to the features given in the generic description, the 

 following are diagnostic for this species. Size small, form slender. 

 Vertex very weakly sulcate. Pronotum showing somewhat less 

 convexity than in, A. xiphidiopsis (Karny). Lateral lobes of 

 pronotum shallow, with ventro-cephalic angle very weakly in- 

 dicated, the margin convex to the ventral angle, which is broadly 

 rounded at more than ninety degrees, caudal margin strongly 

 oblique, straight except at humeral sinus where it is broadly and 

 shallowly concave. Tegmina and wings showing considerable 

 reduction, narrowed and nearly reaching apices of caudal femora. 

 Ultimate tergite produced, embracing cereal bases, caudal margin 

 weakly concave laterad to these and weakly concave above these, 

 deeply concave between these. Cerci small and simple, moder- 

 ately stout proximad with a short dorso-internal lamella, thence 

 tapering and curving inward, then straight to the acute apex, the 

 external margin curving to the straight internal margin to form 

 this. Above the subgenital plate is seen a thick trapezoidal plate, 

 extending caudad an equal distance (the yoke portion of the ul- 

 timate tergite). Subgenital plate trapezoidal in produced portion, 

 a longitudinal carina on each side terminating at the latero-caudal 



M Verh. Zool.-bot. Ges. Wien, LXX, p. 23, (1920). 



