Mr. R. Shelford’s Studies of the blattide. 489 
7. Pseudothyrsocera scutigera, Wk. 
Pseudomops scutigera, Walker, |. c. p. 212 (1868). 
g. SARAWAK (Wallace). 
8. Pseudothyrsocera xanthophila, Wik. (Plate XXX, figs. 1 
and 2). 
Blatta canthophila, Walker, |. c. p. 230 (1868). 
dg. MENADO, CELEBES (Wallace). 
Fulvous. Antenne black, slightly incrassated in basal half 
and hirsute ; apex of maxillary palpi black. Pronotum trapezoidal, 
covering vertex of head. Tegmina with thirteen costal veins, 
discoidal field with seven longitudinal sectors, three of which are 
given off from the anterior ulnar branch, four from the posterior 
ulnar, the latter are strongly angled. Supra-anal lamina triangular, 
produced, the posterior angles bear each a short downwardly directed 
spine ; sub-genital lamina produced, narrow, covered with a dense 
pile of long hairs, asymmetrical, the left posterior angie strongly 
produced, no styles. 
Total length 13 mm. ; length of tegmina 10°8 mm. 
9. Ischnoptera reversa, Wk. 
Ischnoptera reversa, Walker, l.c. p. 147 (1869). 
g. SINGAPORE (Wallace). 
Rufo-castaneous. Basal half of antenne, terminal joints of 
maxillary and labial palpi, fuscous. Pronotum trapezoidal, sides 
deflexed, not covering vertex of head. Tegmina with nineteen costal 
veins, discoidal field with ten longitudinal sectors. Wings with the 
mediastinal vein three-branched, radial vein unbranched, twelve 
costal veins, ulnar vein with nine branches, three of which go towards 
the dividing vein. Supra-anal lamina triangular, sub-genital lamina 
ample, its border notched, two styles. Legs with the genicular 
angles of the femora, the tibz and tarsi fuscous, all the femora with 
genicular spines, formula of apical spines, }, 4, +, anterior margin 
of front femora with numerous spines, the more distal short and 
closely set. 
Total length 20 mm.; length of body 13 mm. ; length of tegmina 
15 mm. 
10. Lschnoptera erythrina, Wik. 
Blatta erythrina, Walker, |. c. p. 219 (1868). 
9. BRAZIL. 
This is synonymous with Jschnoptera rufa, Br. 
