Mr. R. Shelford’s Studies of the Blattide. 239 
lamina; cercielongate. Wings with median and ulnar veins simple, 
reaching the outer margin of the wing, anterior to the somewhat 
inconspicuous apical triangle. 
Escala circwnducta, Wik. (Plate XV, fig. 4.) 
Blatta circumducta, Walker, Cat. Blatt. B. M. Suppl. 
p. 142 (1869). 
¢. Testaceous. Head rufo-castaneous ; antenne, palpi clypeus 
testaceous. Pronotum with the disc rufous, lateral and anterior 
margins hyaline and a central testaceous macula. Tegmina with 
twelve costal veins, mediastinal vein bifurcate, radial vein with 
extremity ramose. Wings clear hyaline, with ten costal veins, 
radial vein bifurcate near the apex, apical triangle elongate but 
narrow, first axillary vein tri-ramose. Posterior femora with three 
spines on anterior margin beneath, four on posterior margin ; 
formula of apical spines, }, }, 1, no genicular spine on anterior femora. 
Supra-anal lamina produced, triangular, but doubled on itself so 
that in dorsal view the apex cannot be seen and the lamina appears 
then to be short and transverse. Sub-genital lamina ample, semi- 
circular in outline. The left style acuminate, the right absent, the 
lobe bearing five curved hooks bent over the edge of the sub-genital 
plate. Cerci elongate. 
Total length 14 mm. ; length of tegmina 11°5 mm. 
ADELAIDE, S. AUSTRALIA. Five specimens, including 
the type (Oxford Museum). 
Escala longiuscula, Wik. (Plate XV, fig. 5.) 
Blatta longiuscula, Walker, Cat. Blatt. B. M. Suppl. 
p. 143 (1869). 
¢. Testaceous; head rufo-testaceous; lateral and anterior mar- 
gins of pronotum hyaline. Tegmina with nineteen costal veins, 
radial vein not bifurcate, not ramose at extremity, anterior ulnar 
vein bifurcate, posterior ulnar multi-ramose. Wings as in preceding 
species. Posterior femora with five spines on each margin beneath, 
formula of apical spines }, }, +, genicular spines on all the femora. 
Supra-anal lamina produced, trigonal ; sub-genital lamina as in the 
preceding species, the right style absent, the lobe modified to form 
a stout double-pointed hook; cerci elongate, their apices curved 
downwards, 
Total length 13 mm.; length of tegmina 11 mm. 
ADELAIDE. Four examples, including the type (Oxford 
Museum). 
