1922] NATURAL SCIENCES OF PHILADELPHIA 201 



Type: 9 ; Singapore, British Straits Settlements. May, 1899. 

 (Dr. Wm. L. Abbott.) [U. S. National Museum.] 



Size small for the genus, form robust. Vertex horizontal, sharply- 

 acute, projecting very slightly beyond the antennal scrobes and 

 moderately sulcate throughout. Pronotum densely beaded, with 

 ventral margins of lateral lobes very weakly rounded obtuse- 

 angulate (as figured for genicularis by Saussure and Pictet). 

 Tegmina fully developed, with convexity of costal margin stronger 

 than that of sutural margin, so that the very sharply rounded, 

 acute apex is at the latter. Wings extending as far caudad as the 

 tegmina, but apparently narrow. Supra-anal plate triangular, 

 slightly longer than wide, with lateral margins weakly convex 

 and apex sharply rounded; surface convex and sub-tectate. Ovi- 

 positor shorter than caudal femur, dorsal margin almost straight, 

 feebly sinuous, serrulate in meso-distal portion; ventral margin 

 straight proximad, curving meso-distad to the acute apex and sub- 

 serrulate distacl; lateral surface with (four and five) oblique, 

 sharp, delicate distal ridges on dorsal valves and a blunt node 

 below these on ventral valves. Limbs moderately pilose. Dorsal 

 femoral margins lamellate and very minutely tuberculate, this very 

 weak for median femora. Ventral femoral margins armed as 

 follows. Cephalic internal 6 and 7, cephalic external 0, median 

 internal 6 and 6, median external 3 and 4, caudal internal 9 and 9, 

 caudal external 12 and 16. Dorso-internal margin of caudal tibiae 

 weakly lamellate and minutely serrulate. 



General coloration buckthorn brown tinged with tawny and 

 quite uniform. Ovipositor deepening to tawny distad and still 

 darker at apex. 



Length of body 30, length of pronotum 7, length of tegmen 46.2, 

 greatest tegminal width 12.3, length of cephalic femur 7.7, length 

 of caudal femur 13.8, length of ovipositor 13.2 mm. 



The type is unique. 



Gonyatopus gemmiculus new species. Plate XVII, figures 5, 6 and 7. 



This delicate and beautiful little insect does not have the external 

 genicular lobes of the cephalic femora compressed and horizontally 

 produced, but in all other respects agrees so closely with the de- 

 scription of Gonyatopus that we do not feel justified in erecting a 

 new genus to include it. 



The mesosternum in this species, however, does not have the 

 margins simple, as might be inferred from Brunner's generic de- 

 scription, while the form and coloration of the cephalic coxal spine 

 is a most remarkable feature in gemmiculus, not mentioned 

 elsewhere for other of the species. 



The species is apparently nearest the Philippine (?. integer 



