ORISMOLOGY. 355 
¢. TEGMINA. ; 
1h. FENESTRELLA (Fenestrella). A transparent eye-like 
spot in the Anal Area of the Tegmina of Acrida 
Ky ds 
2. ConvotvENtT (Convolventia). When the Anal Area 
is horizontal, incumbent on the back of the msect, 
and forms a right angle with the rest of the tegmen, 
which is vertical and covers the sides. Ex. Lo- 
custa Leach. N.B. In this case the Anal Area of 
one 'Tegmen covers that of the other. 
3. Atirorm (Aliformia). When. their substance ap- 
proaches to membrane, and they nearly resemble 
Wings. Ex. Most Homopterous Hemiptera. 
nj HEMELYTRA. 
1. Ostectep (Obtecta). When the Hemelytra are 
covered by a scutelliform mesothorax. Ex. Scv- 
tellera. 
2. DetectepD (Detecta). When they are not so co- 
vered. Ex. Most Heteropterous Hemiptera. 
6. wines (Ale). 
A. Denomination, 
1. Anrerror (Antica). The fore or upper wings. 
a, SupERion (Superiores). The anterior wings are so 
denominated if when at rest they are placed upon 
the posterior wings. Ex. Hymenoptera. 
Bb. Primary (Primores). The anterior wings: are so 
@ For the reason of this change of the name of Locusta F., see 
Zool. Journ. N° iv. 
An Acrida with this spot is figured by Professer Lichtenstein. 
Linn. Trans. iv. t. v. A. 
