4 Mr. T. D. A. Cockerell — Descriptions and 



Prosopis ffuamensis, sp. u. 



? . — Length about 7i mm. 



Robust ; head aud thorax black ; tubercles, scutelhim^ and 

 postscutellum yellow (turned red by cyanide in the material 

 before me) ; Tipper border of prothorax with a small yellow 

 mark on each side; face-marks reduced to a very obscure 

 narrow band along" each inner orbit ; head broad and massive ; 

 mandibles thick, bidentate at end ; clypens very high, irre- 

 gularly roughened with striae and punctures; flagellum dark 

 reddish beneath ; front shining^ with large punctures, those 

 in the middle crowded, but on each side is a depression with 

 scattered very large punctures ; cheeks with rather small 

 punctures ; mesothorax shining, rather sparsely but strongly 

 punctured, the longitudinal grooves distinct ; area of meta- 

 thorax crescentic, well defined, shining, with distinct ridges; 

 sides of metathorax Avith white tomentum ; tegulae black. 

 AYings clear, with dark fuscous nei'vures and stigma ; first 

 r. n. meeting first t.-c. ; second s.m. very long ; second r. n. 

 with a strong double curve. Legs black, the hind femora 

 reddish. Abdomen shining, dark green, finely subobsoletely 

 punctured, second segment blackened basally. 



^ . — (Head lacking in specimen studied.) Similar to the 

 female, but more slender ; anterior tibiae and tarsi ferru- 

 ginous ; abdomen bluer and more distinctly punctured. 

 This was examined by Dr. R. C. L. Perkins, and bears the 

 following label in his handwriting: — ''Belongs to group 

 wdth largely developed wings of seventh ventral segment 

 and bifurcate apex to eighth segment, the bifurcations ex- 

 panded, as in Prosopns cressoni ; see Metz's paper, Tr. Am. 

 Soc. xxxvii. pi. iv. fig. 53 &c. This group is American, 

 Australian, and European, and probably cosmopolitan." 

 The terminal lobes or divisions of the eighth ventral plate 

 are large and abundantly fringed with very long, coarse, dark 

 branched hairs. The sagittse are turned downward at the 

 end, the downward curve beginning about the level of the 

 ends of the stipites, which are furnished with long dark 

 hairs. 



Hab. Island of Guam (Z). T. Fullaivay). U.S. National 

 Museum. 



Not at all related to the Hawaiian Prosopididse, but close 

 to some of the Australian forms, from which it is readily 

 known by the face-markings. 



