MORGAN HEBARD 57 



puhillus distad, fourth joint with distal half supplied with a small 

 pulvillus. No large arolia present. 



Blattella germanica (Linnaeus) (Plate II, figures 6 to 9.) 



1767. [Blatta] germanica Linnaeus, Syst. Nat., ed. xii, i, p. 668. [Denmark.] 



The established synonyms of this species are Blafta ohliquata 

 Daldorff and Ischnoptera bivittata Thomas. 



The pale coloration, with two, dark, parallel, longitudinal bands 

 on the pronotum, and small size of the present insect serve readily 

 to distinguish it from any of the other species here considered. 

 Many of the exotic species of the present genus agree closely with 

 germanica in general appearance, but are easily separated by very 

 striking primary and secondary male genital features. 



Characters of Male. (Miami, Florida.) Head elongate, more evenly rounded 

 in contour, with eyes not as much projecting as in the majority of the species of the 

 Blattellites; interocular space three-quarters as wide as space between antennal 

 sockets: ocellar spots distinct; face very weakly flattened mesad below ocelli, 

 lateral margins below eyes weakly convergent ventrad. Maxillary palpi short for 

 group, third and fifth joints subequal in length, fourth joint slightly shorter than 

 either. Pronotum transversely weakly convex; lateral portions not broad, mod- 

 eratelv deflexed and very weakly opaque; caudal margin very feebly and bluntly 

 obtuse-angulate produced. Tegmina elongate. Dorsal surface of abdomen un- 

 modified to sixth segment, with latero-caudal angles of segments weakly produced 

 and broadly rounded; sixth segment with latero-caudal angles more produced and 

 caudal margin deeply brace-shaped emarginate, the broad meso-proximal area 

 occupied by two, deep, rounded, transverse fossae, separated by a narrow, high, 

 medio-longitudinal ridge, with caudal margins of fossae raised laterad in low, 

 rounded ridges; meso-caudal area deeply concave, particularly cephalad. but in a 

 less broadly transverse area; seventh segment as much produced, bilobate, with 

 surfaces weakly convex except proximo-mesad, where twin, small, but very deep, 

 fossae occur; eighth segment no more produced than fifth, transversely distinctly 

 constricted, latero-caudal angles weakly acute-angulate produced, caudal margin 

 weakly and evenly concave. Supra-anal plate strongly produced, subchitinous, 

 with length distinctly greater than proximal width and free margin feebly and 

 evenly con\ex to the parabolic apex. Sinistrad, within the anal chamber, are sit- 

 uated roundly angulate, chitinous processes, from which, mesad, projects a small, 

 chitinous, flattened plate, tapering to aciculate apex which is directed dorsad. Dex- 

 trad, within the anal chamber, from a ventral, soft mantle, projects caudad an 

 elongate, straight, chitinous, aciculate process with surface obliquely furrowed 

 dorsad and externo-laterad ; dextrad of this, an elongate, stout, straight, subchiti- 

 nous process, with apex rounded, projects caudad. Above these processes, from a 



MEM. AM. ENT. SOC, 2. 



