72 
Psyche 
[April 
s Preepisternal suture 
sa Subalare 
san Subanale 
sb Subcostale 
Sc Subcostal vein 
sc Scutum 
see Subcostal head (subcostacaput) 
scr Subcostal crista (subcrista) 
si Suralar incision 
si Scutellum 
sis Scutellar suture 
sp Spinal pit (spinacava) 
spi Spina or monapophysis 
ss Spinasternite 
st Spiracle 
su Subspiraculare 
sur Suralare 
t Prepleurite 
tg Tegula 
ti Tegular incision 
tn Trochantin 
ttn Trochantinal tendon 
u Anterior basalare 
v Subcostal incision 
w Wing imprint on epimeron 
x Posterior basalare 
Explanation of Plates I, II, III. 
Fig. 1. Ventral view of sternal and pleural region of the thorax 
of the roach, spread out as though lying in one plane. 
Fig. 2. Ventral view of the mesothoracic wing-base, pleural 
region and meral region of the leg of the roach. 
Fig. 3. Ventral view of basal region of the metathoracic wing 
folded back in repose. 
Fig. 4. Ventral view of metapleural region and base of hind 
wing spread out slightly. 
Fig. 5. Internal processes of the sternal and pleural region of 
the thorax of the roach seen from above (i. e. from within). 
Fig. 6. Lateral portion of the mesonotum and the base of the 
fore wing (extended) of the mantid Mantoides. 
Fig. 7. Postero-basal region of the hemielytron of a Pentatomid. 
Fig. 8. Postero-basal region of the fore wing of Panorpa (seen 
from above). 
Fig. 9. Postero-basal region of fore wing of the sawfly Pteronidia. 
Fig. 10. Basal region of the fore wing of the termite Masto- 
termes. 
Fig. 11. Basal region of the fore wing of the beetle Calopteron. 
Fig. 12. Pronotal plate of the roach (dorsal view) 
Fig. 13. Mesonotum of the roach seen from within. 
Fig. 14. Lateral portion of metanotum and wing base of the 
roach seen from within. 
Fig. 15. Mid-dorsal region of the neck of the roach seen from 
within. 
Fig. 16. Dorsal view of meso- and metanotum, with basal 
regions of the wings of the roach. 
