1922] NATURAL SCIENCES OF PHILADELPHIA 245 



greatly reduced, no larger than and scarcely to be distinguished 

 from the dorso-internal spines. 



Length of body & 15 and 18.8, 9 18.3 and 23.1; length of pro- 

 notum cf 3.3 and 4, 9 3.8 and 4.6; length of tegmen c? 20.4 and 24, 

 9 22.8 and 29.8; length of caudal femur & 13.8 and 17, 9 15.8 

 and 17.8; length of ovipositor 17.2 and 18.7 mm. 



Conocephalus (Xiphidion) borneensis (Redtenbacher) 



1891. Xiphidium borneense Redtenbacher, Verh. Zool.-bot. Ges. Wien, 

 XLI, p. 514. [d\ 9; Borneo.] 



Island of Penang, British Straits Settlements, (from C. F. 

 Baker), 1 cf . 



This insect appears to be very close to C. laetus (Redtenbacher), 

 differing in the much shortened organs of flight and dark genicular 

 areas of the caudal femora. 



In the specimen here recorded the caudal femora have the 

 genicular areas tipped with a suffusion of brown, rather than 

 "apice extremo nigro-nitido." The male stridulating area is 

 proportionately smaller and less elongate than in males of laetus 

 before us, while the caudal tibiae have the dorso-internal spur 

 conspicuous and decidedly larger than any of the dorso-internal 

 spines. So close does it agree in other respects with laetus, that, 

 were these features not of decided diagnostic value, we would have 

 considered it a brachypterous example of that species. 



The very narrow convex callosity of the pronotal lateral lobes 

 in this species and laetus is slightly narrower than in the related 

 C. glacliatus (Redtenbacher). 



Length of body 16.8, length of pronotum 3.9, length of tegmen 13, 

 length of caudal femur 14.3 mm. 



Conocephalus (Xiphidion) longipennis (Haan) 



1842. L[ocusta] (Xiphidium) longipennis Haan, Verh. Nat. Geschied. 



Nederl, oversee, bezitt., Zool., Ins., p. 189. [<?, 9 : Padang, [Sumatra]; 



Banjermassing, [Borneo].] 

 1877. X[iphidium] spinipes Stal, Ofv. K. Vetensk.-Akad. Forh., 1877, 



No. 10, p. 47. [ 9 , Philippine Islands.] 

 1891. Xiphidium longicorne Redtenbacher, Verh. Zool.-bot. Ges. Wien, 



XLI, p. 513. [d\ 9 : Java; Borneo; Pelew [Island]; Yap [Island]; East 



Indies; Raratonga [Island]; Caroline [Islands].] 



The female before us from Los Bafios agrees fully with Stal's 

 inadequate description of spinipes and we believe that examination 

 of the type will establish definitely this synonymy, first indicated 

 with a query by Redtenbacher. 



Redtenbacher described longicorne, overlooking the fact that 

 macropterism and brachypterism as well as variation in size 



