168 PROCEEDINGS OF THE ACADEMY OF [Vol. LXXTV 



Genotype. — Placycaedicia obiensis new species. 



Agrees closely with Caedicia differing in the following features. 

 Cephalic tibiae nearly flat dorsad, showing subobsolete sulcation. 

 Pronotum with disk widening distinctly caudad, lateral lobes 

 with width distinctly less than depth. Tegmina broad, width 

 much greater than the pronotal length, the branches of the median 

 vein resultantly more oblique. Limbs decidedly shorter and 

 heavier in proportion to the body bulk. 



Nothing is to be found of diagnostic importance in the shape of 

 the mesosternal and metasternal lobes. It is surprising to find so 

 little differe ce after a close comparison of obiensis with the very 

 widely different appearing Caedicia gloriosa here described. 



Platycaedicia obiensis new species. Plate XIV. figures 13 and 14. 



This insect is closely related to P. major (Brunner), differing in 

 the decidedly smaller size, narrower tegmina, less numerous spines 

 of the dorso-external margin of the cephalic tibia and more numerous 

 spines of the ventro -external margin of the caudal femora. 



To P. hospes (Brunner) it would appear to be nearest in the 

 majority of features, but the slightly sulcate dorsal surface of the 

 cephalic tibiae and tria gular mesosternal and metasternal lobes 

 in that insect may indicate that these species are actually generically 

 distinct. 



Type: 9 ; Obi Island, Moluccas. [Hebard Collection, Type no. 



790.] 



Vertex narrow, narrowing and evenly and strongly declivent, 

 longitudinally sulcate but with the sharply rounded apex entire. 

 Face rather decidedly convex, the depression and ridge on each 

 side less decided than in Caedicia gloriosa, here described. Maxil- 

 lary palpi with fourth joint two -thirds as long as third, only two 

 fifths as long as the very elongate fifth joint. Pronotal disk de- 

 planate, lateral margins very weakly concave and diverging moder- 

 ately caudad, rounding strongly into the nearly vertical lateral 

 lobes ; the latter with depth distinctly greater than width. Tegmina 

 elongate and broad sutural margin very broadly and weakly convex 

 but curving more broadly into the rounded apex than does the 

 costal margin; median vein branching slightly before its median 

 point and with four more distal branches the first branch forking 

 slightly before end of its proximal third, all of the branches of the 

 median vein following a strongly oblique course throughout or in 

 greater portion. Ovipositor minute, unarmed, the apices of the 

 dorsal valves produced with extremities sharply rounded; basal 

 plica with a large, stout, convex-conical projection meso -caudad, 

 which is directed caudad, the entire median portion of the plate 

 very deeply concave. Subgenital plate very small, rounded tri- 

 angular, with apex very briefly and narrowly emarginate. Geni- 



