ORTHOPTERA 



FAM. BLATTID^ 



SUBFAM. NYCTIBORIN^ 



by R. SHELFORD 



WITH I COLOURED PLATE 



^-^HK Nvctiboiinffi form the third division in the classification of the Blattidag. 



"^%vH-f Characters. — Antennae setaceous or plumose and incrassated. Head with the 



'% vertex exposed. Tegmina coriaceous and together with the pronotum generally covered 

 with a fine silky pubescence, which in the larvae extends over the whole body. Tegmina 

 in all but one genus extending be\'ond the apex of the abdomen. Wings with anterior portion verj- 

 large, costal veins somewhat irregular and ramose, ulnar vein multiramose, some of the rami incom- 

 plete and failing to reach the apex of the wing. Supra-anal lamina produced, triangular, its apex 

 frequently incised slightly; sub-genital lamina of male narrow, slightlj- asymmetrical and with two 

 styles, of female ample. Cerci long, pointed. Femora various!}' armed beneath ; tarsi with large pulvilli 

 and arolia (i). Ootheca large, flattened. 



KEY TO THE GENERA 



I . Tarsi willi large pulvilli and arolia. 



2. Tegmina and wings longer ihan the body. 



3. Pronotum anteriorly parabolic, femora strongly armed, i. Genus Nyctibora, Burmeister. 

 3'. Pronotnm transversely elliptic, femora sparsely armed. 

 4. Antenna incrassated throiigJiout the greater part 



of tlieir lens:th 2. Genus Eunyctibora, nov. gen. 



(i) In yfegaioblatfa however there is no arolium between tlie tarsal chiws and the pulvilli are minute. 



