1922] NATURAL SCIENCES OF PHILADELPHIA 253 



Alloteratura sandakanae new species. Plate XIX, figures 8 and 9. 



Though females alone are before us, the present insect may be 

 readily separated by the dark vertex, antennae and pronotal disk, 

 the denticulate genicular lobes of the caudal femora and average 

 greater number of ventro-external spines of the median tibiae. 

 The ovipositor is longer than in any of the species of the genus 

 of which females are known. 



Type: 9 ; Sandakan, British North Borneo. (From C. F. 

 Baker.) [Hebard Collection, Type no. 822.] 



Size medium, form comparatively slender. Vertex normal, with 

 dorsal surface showing a subobsolete linear sulcation. Pronotum 

 narrower than in females of A. xiphidiopsis (Karny); lateral lobes 

 shorter, cephalic angle broadly convex, ventral angle rounded at 

 ninety degrees, caudal angle obsolete, humeral sinus distinct, 

 obtuse-angulate. Tegmina and wings fully developed, longer than 

 in A. xiphidiopsis. Ultimate tergite, as in females of that species, 

 deeply concave above base of ovipositor. Cerci showing, as in 

 A. xiphidiopsis, a meso-distal thickening but proportionately 

 more slender, then tapering to the acute apex. Ovipositor slender, 

 weakly curved dorsad, tapering to the acute apex. Subgenital 

 plate shorter than wide, convex, sub-bilobate and showing a very 

 weak median emargination. Genicular lobes of cephalic and me- 

 dian femora bluntly rounded, of caudal femora each with a single 

 heavy spine. Tibial spines as normal in the genus. 83 



General coloration clay color. Eyes dark brown. Antennae 

 chestnut brown, heavily overlaid with black proximad, this be- 

 coming less extensive distad and only occupying the intersections 

 of the joints. Vertex and occiput blackish brown, this continued 

 as a dorsal suffusion of chestnut brown on the disk of the pronotum. 

 Wings suffused with brown. Ovipositor tawny. 



The type measurements are given first. Length of body 11 and 

 12.5, length of pronotum 3.5 and 3.9, total width of pronotum 

 2.3 and 2.5, length of lateral lobe of pronotum 2 and 2.1, depth of 

 lateral lobe of pronotum 1.8 and 1.9, length of tegmen 17.6 and 

 18.7, width of tegmen 2.3 and 2.6, length of cephalic femur 3.3 and 

 4, length of caudal femur 10.5 and 11.7, length of ovipositor 8.8 

 and 9.8 mm. 



In addition to the type, a female paratype, bearing the same 

 data, is before us. 



XIPHIDIOPSIS Redtenbacher 



Genotype, selected by Kirby in 1906, X. fallax Redtenbacher. 

 We here restrict this genus to the species having the auditory 

 foramina of the cephalic tibiae apert on both faces. 



89 Except that, in the type, only one of the ventro-external margins of the 

 median tibiae bears six (and one distal) spines. 



