198 PROCEEDINGS OF THE ACADEMY OF [Pai't II 



Wings transparent, showing a faint tawny tinge, area of costal veins 

 in proximal portion clouded, in basal portion with bister and in 

 area of enlarged portions of veins buffy, in distal portion with nar- 

 row, interrupted suffusions of bister between the veins, this more 

 weakly continued around the distal margin of the anterior field in 

 buckthorn brown. Remaining dorsal surface ochraceous-buff, 

 shading to chestnut brown laterad and on supra-anal plate, the 

 immediate latero-caudal angles of the tergites and free margin of 

 the supra-anal plate buffy, these areas, however, not sharply defined. 

 Cerci clear ochraceous-buff. Limbs clear ochraceous-buff, coxae in 

 large external portions dark prouts brown, median femora in a 

 small area and caudal femora in a much larger area flecked ventro- 

 distad on caudal faces with dark prouts brown, the corresponding 

 tibiae with several heavy flecks of this color on dorsal and caudal 

 faces, the cephalic tibiae with fewer and smaller weak brownish 

 areas. Ventral surfaces of abdomen light ochraceous-buff, with an 

 irregular fleck and suffusion, as well as dots, of prouts brown laterad 

 toward the laterad margins. 



Length of body 10, length of pronotum 2.6, width of pronotum 

 4, length of tegmen 11.2, width of tegmen meso-proximad 4, width 

 of tegmen mesad 3.9, length of wing 10.6, width of wing 6.3, width 

 of intercalated triangle 1.7, length of caudal femur 3.7 mm. 



The type of this extraordinary insect is unique. ^ 



Neoblattella platystylata new speck;?. 



Charvein and St. Jean du Maroni, French Guiana. 

 Described on page 229. 



Neoblattella adspersicollis (Stal) 



1861. Blatta adspersicollis Stal, Kongl. Svenska Freg. Eugenie's Resa, Ins., 

 p. 308. [cf ; Rio de Janeiro, [Brazil]. ] 



La Forestiere, Upper Maroni River, French Guiana, 1 cf . 

 This large species is of particular interest as genotype of Neoblat- 

 tella, see page 232. 



LEUROPELTIS^ new genus. 



This genus is erected to include one of the most aberrant forms 

 of the Group Blattellae known to us. The broad flattened head 

 and prominent eyes suggest a further development of the type 

 usually shown by species of the Group Euphyllodromiae. The flat 

 pronotum and armament of the ventro-cephalic margins of the 

 cephalic femora afford distinctive characters. 



Though agreeing in the flattened form (though this is more decided 

 in the present insect), character of limb armament, pulvilli, tarsal 



' From Xeupoq = flat and xsXttq= a light shield. 



