122 THE BLATTIDAE OF PANAMA 



convex, interocular space broad, appreciably greater than that between the anten- 

 nal sockets, subequal to occipital depth of the very large eyes. Surface of inter- 

 ocular area with regularly placed impressed pits, connected by fine radiating lines, 

 this weakening to area above labrum, which is smooth and polished. Maxillary 

 palpi with fifth (distal) joint enlarged, as long as combined length of second and 

 third joints, third joint slightly longer than fourth. 



Pronotum transverse, short elliptical; margins convex, the greatest convexity 

 being at the weakly suggested latero-caudal angles; surface weakly convex laterad, 

 lateral-caudal sulci of disk represented by broad and rather shallowly depressed 

 areas diverging cephalad, the intervening section very feebly convex, with very weak 

 transverse wrinkles and no trace of a medio-longitudinal sulcation. Tegmina cori- 

 aceous, lanceolate-elliptical; width greatest meso-distad; apex rather broadly 

 rounded; costal margin finely nodulose cingulate from distal portion of marginal 

 field to apex; anal field elongate pyriform, anal sulcus distinct; discoidal sectors 

 (four or five) longitudinal, except immediately beyond apex of anal field where one 

 or two are weakly oblique, connected by moderately well developed cross-veinlets, 

 which form irregularly rectangulate interspaces, the majority of which are elongate, 

 particularly distad.'''^ Wings fully developed. 



Supra-anal plate transverse, free margin broadly and evenly convex. Paired 

 plate beneath supra-anal plate with sinistral portion slightly the heavier, supplied 

 with a few stiff microscopic hairs. Subgenital plate highly asymmetrical: margin 

 sinistrad sharply and strongly obliquely concave ventrad of cercus, this concavity 

 rather extensively subchitinous at its base, fornaing a socket from which springs a mi- 

 nute, microscopic, simple style ;'^^ mesad the plate is produced in a lamella with disto- 

 sinistral angle broadly rounded, while the disto-dextral angle is produced dextrad 

 in a heavy arm, which at its apex is sharply curved back, thence forming a slender 

 chitinous process lying along the dorsal margin of the produced portion, with apex 

 aciculate; dextrad the margin is feebly convex, oblique produced to the median 

 produced portion, from which it is separated by a straight sulcus, which is subchiti- 

 nous, showing a weak inclination sinistrad, and runs to near the proximal third of 

 the plate. 



Cephalic femora missing. Median and caudal femora with ventral margins well 

 supplied with spiniform hairs. ^^^ Dorsal genicular spines absent from all limbs. 

 Caudal tarsus about four-fifths as long as caudal tibia; the metatarsus slightly 

 longer than the combined length of the succeeding tarsal joints, pilose, with ventral 



"■^ The tegmina in the specimens here considered have lost most of the pilose covering 

 shown by the type of minutissima, and the venation is consequently more readily ob- 

 served. These species do not show any differences in tegminal venation which we would 

 consider of specific diagnostic value. 



^'^ In the type of minutissima, a homologous, minute, microscopic, sim])le, sinistral 

 style is found. 



"' This is not a condition which we would term "finely spined," as given for minutis- 

 sima by Rehn, in which species the limbs are in every way similar. This type of limb 

 we would unhesitatingly place in the unarmed category. 



