518 Mr. R. Shelford's Shiclics of the Blattidie. 



Sphccojyhila polyhiaru7n. (Plate XXX, figs. 10-12.) 



^ . Fulvo-testaceous, with a fine fulvous pubescence. Vertex not 

 covered by the pronotum ; front of head swollen and projecting as is 

 common amongst the Corydiinte ; eyes very much reduced, scarcely 

 visible from the front and almost entirely hidden under the deflexed 

 sides of the pronotum ; one pair of true ocelli situated low down on 

 the frons and closer together than the antennal sockets ; maxillary 

 and labial palpi small. Antennte short, of twenty joints, the first 

 joint longer than broad, the second as broad as long, the third longer 

 than broad, the remaining joints at first broader than long, but 

 gradually becoming longer, the last four or five joints almost monili- 

 form. Pronotum with anterior and posterior margins truncate, 

 narrower in front than behind, longer than broad, sides deflexed ; 

 nieso- and metanotvim broader than long, their posterior angles only 

 slightly produced backwards. Nine abdominal tergites, including 

 the supra-anal lamina, are visible, posterior margins of the first three 

 and of the eighth straight, of the fourth to the seventh concave; 

 the supra-anal lamina is semi-orbicular. Cerei one-jointed, aciite, 

 equal to the supra-anal lamina in length. Eight abdominal sternites, 

 including the sub-genital lamina, are visible; sub-genital lamina 

 slightly produced, not extending as far as the supra-anal lamina, 

 with one pair of styles equalling in length the cerci and clothed 

 with a few erect hairs. Femora without spines, on the anterior 

 margin beneath of the front femur is a row of stiff setfe, a genicular 

 spine on each femur, no apical spines. Spines on tibiae above in 

 three rows, five apical spines on the posterior tibiae. Metatarsus 

 longer than the remaining joints, no arolium between claws. 



5 unknown. 



Total length 3 mm. — 3' 2 mm. 



Ste. Makie, Oyapock, French Guiana (F. Geay, 1900). 

 Ten examples (Paris Museum) ; from the nest of Polyhia 

 fy(jmse,a. Fab. 



The absence of female examples is striking, but it is 

 possible that the entire colony was not secured by the 

 collector, some individuals may have escaped from the 

 nest. I cannot be certain that the specimens here de- 

 scribed are fully adult, but I am inclined to think that 

 they are, or if not, that the adults are apterous, for 

 nymphs of winged cockroaches have the posterior angles 

 of the mesonotum and metauotum much more strongly 

 produced backwards than is the case in the specimens 

 before me. 



