374 Rev. T. A. MarsbalFs Monograph of 
xviii. AsriLOTA, Forster. 
Forsfc,, Yerh. Pr. Rheinl., 1862, p. 268. 
Maxillary palpi 6-, labial 4-jointed. Antennae of the § stout, 
moniliform, short, with many joints, longer in the (J ; 3rd joint 
longer than the 4th. Mesothoracic sutures hardly commenced ; 
fovea of the mesonotum minute or obsolete ; furrow of the meso- 
pleur^ punctate or crenulate. First cubital areolet small, often 
confounded with the 2nd, and imperfectly separated from the 1st 
discoidal owing to the paleness of the transverse nervures; the 
two intercubital nervures always weaker than the rest, the 1st of 
them shorter than the 2nd abscissa ; stigma almost or altogether 
obsolete, confounded with the metacarp ; often the metacarp, 
throughout the length of the radial areolet, is a little stouter than 
the costa, but seldom offers a slight enlargement at the base to 
indicate the place of the stigma. Abdomen of the $ depressed, 
more or less spatulate or linear ; that of the $ strongly com- 
pressed ; viewed in profile, oval or subtriangular ; 1st segment 
linear, hardly smaller at the base, rugulose, elevated ; 2nd and 3rd 
taken together very long ; the rest compressed, forming a carini- 
form edge above ; apical segments curved downwards ; belly 
carinate, emitting from its lower posterior angle the terebra, 
which is falcate, ascending, appearing of various lengths according 
to its position. 
This genus comprises the lov^^est forms of the Alysiids ; 
they exhibit a general degradation of structure which 
distinguishes them at once from all the preceding. They 
are of smaller size, often very minute ; the head is differ- 
ently shaped, less flattened anteriorly, while the part 
behind the ocelli is more extended ; the face is convex^ 
smooth, and obliquely placed, the clypeus bmader than 
in the other Alysiids, convex, somewhat semicircular, 
truncated anteriorly ; mandibles small ; thorax short ; 
metathorax sloping from its base, without any regular 
sculpture. The limits of the stigma (where it can be 
traced at all) are indeterminate ; the radial areolet cul tri- 
form, almost always reaching the tip of the wing; re- 
current nervare evected; 1st cubital areolet smaller than 
the 1st discoidal; 2nd intercubital nervure always 
decolorous; cubital nervure disappearing towards the 
tip of the wing j anal nervure springing from the middle 
of the extremity of the 2nd discoidal areolet, and often 
effaced. 
