238 Mr. R. Shelford’s Studies of the Blattide. 
the species in the genus 7heganopteryx ; in some of the 
species the posterior “ulnar vein of the tegmina 1s markedly 
angled, in others it is not. The form of the “ titillator” 
in H. lateralis, W1k. (= H. major, Br.) is shown in Plate 
XV, fig 2; Ae is seen to be very different from that in 
Th. ‘ethiopica, Sss. ; unfortunately we know so little of the 
structure of this organ in the Blattide, that at present 
we can make no use of it in generic distinctions. The 
titillator of H. histrio, Burm., is almost the same as in 
H. lateralis, W1k. 
The synonymy of Hemithyrsocera histrio, Burm., is here 
given :— 
Thyrsocera histrio, Burm., Handb. Ent. uu, p. 499, n. 7 
(1838). 
Blatia lateralis, Serv., Ins. Orth. p. 107 (1839). 
Phyllodromia inversa, Br.. Nouv. Syst. d. Blatt. p. 96, 
n. 8 (1865). 
Pseudomops jissa, W1k., Cat. Blatt. B. M., p. 213 (1868). 
Theganopteryx jucunda, Sauss, Mel. Orth. ii, p. 52 
(1869). 
Thyrsocera lineaticollis, Bol., An. Soc. Espaii. xix, p. 302 
(1890). 
The sub-genital lamina and adjacent parts in the male 
are figured on Plate XV, fig. 1 
Hemithyrsocera rgnobilis, n. sp, 
2. Differs from H. ferruginea, Br., in its smaller size ; the golden 
lateral margins of the pronotum reach the anterior margin, but are not 
curved inwards here to the extent that they are in ferruginea; the 
posterior legs and the tips of the cerci are ferrugineous. 
Total length 12°5 mm. ; length of tegmina 10 mm. 
No locality. (An identical specimen in the British 
Museum comes from the Khasia Hills.) 
One example (Oxford Museum). 
Genus ESCALA, nov. 
Atlied to Theganopterya, Br., but the sub-genital lamina of the 
male bearing an asymmetrical lobe which may be unarmed, or 
armed with a series of hooks or replaced by a stout hook ; the right 
style sometimes absent, the left style accuminate. Supra-anal 
lamina produced, triangular, not projecting beyond the sub-genital 
