226 PROCEEDINGS OF THE ACADEMY OF [PaRT II 



rounding at its extremity, then decli vent to the not upcurled median 

 portion of the plate, the median section of the margin undulate, 

 bearing in its median depression a small, cylindrical process (sinis- 

 tral style) slightly longer than wide, directed dorsad and armed 

 with two sharp, slender spines, which curve weakly sinistrad; bear- 

 ing in its dextral depression a much more elongate process (dextral 

 style) which is sinuous, directed dorso-mesad and terminating in 

 a sharp, slender spine; beyond the dextral, portion of the plate is 

 strongly curled upward and inward, overhanging the dextral style 

 and folded beneath the cereal base, its margin broadly convex. 



Head with occiput to above ocelh auburn, ocelH light buff; re- 

 maining portions, including proximal antennal joints and palpi, 

 ochraceous-buff with a tawny tinge, with twin weak suffusions of 

 auburn between the antennal sockets. Remaining portions of 

 antennae dresden brown. Pronotum cinnamon brown with a very 

 faintly paler, subobsolete medio-longitudinal hne and flecks, lateral 

 portions very narrowly ochraceous-buff with a tinge of buckthorn 

 brown. Tegmina translucent buckthorn brown, very brief mar- 

 ginal field ochraceous-buff with a tinge of buckthorn brown, humeral 

 trunk and between humeral and very brief mediastine vein, cin- 

 namon-brown for a very short distance. Wings transparent, 

 faintly tinged with brown, except in area of costal veins, where they 

 are heavily tinged with dresden brown. Dorsal surface of abdo- 

 men buckthorn brown, mottled with cinnamon brown. Limbs 

 pale orange-yellow, ventral surface of abdomen ochraceous-buff 

 tinged with orange. 



Length of body 10.8, length of pronotum 2.7, width of pronotum 

 3.3, length of tegmen 10.9, width of tegmen 3.3, length of caudal 

 tibia 4.2, length of caudal metatarsus 1.9 mm. 



This diminutive and commonplace looking insect is one of the 

 most highlj^ specialized and distinctive forms of the Blattidae 

 known to us. The type is unique. 



Supella supellectilium (Serville) 



1839. Blatla supellectilium Serville Hist. Nat. Ins., Orth., p. 114. [Mauri- 

 tius.] 



Bahia, Brazil, Icf, 19. 



Neoblattella janeirae new species. Plate IX, figxires 17, 18 and 19. 



Though showing the general structure and color pattern of sev- 

 eral of the larger groups of this genus, this species differs from all 

 others known to us in the armament of the cephalic femora. The 

 ventro-cephalic margin of these members is armed with a row of 

 heavy spines which decrease suddenly in size and length mesad, those 

 distad being very minute and closely placed, but too heavy to be 

 termed piliform. This is seen to agree more closely with the type 



