500 Rev. T. A. Marshall’s monograph of 
(24) 23. First cubital areolet confounded with the 1st 
discoidal ... . xi APHERETA. 
(23) 24. First cubital areolet separated. ‘from the Ist 
discoidal. 
(26) 25. Fourth joint of the antenne longer than the 3rd; 
pobrachial areolet of the hindwings less than 
half as long as the preebrachial ... Xi PHENOCARPA. 
(25) 26. Fourth joint of the antenne not longer than th 
8rd; pobrachial areolet of the hindwings half 
as long as the prebrachial, or longer. 
(28) 27. Stigma obsolete, or nearly so, not distinguished 
from the metacarp ; 2nd cubital areolet some- 
times confounded with the Ist.. . xviii. ASPILOTA. 
(27) 28. Stigma distinct, evidently stouter than the 
metacarp. 
(82) 29. Stigma cuneiform or oval; not linear, 7.e., not 
of equal breadth throughout. 
(31) 30. Stigma elongate, cuneiform, emitting the radial 
nervure before the middle aa xy. PROSAPHA. 
(30) 31. Stigma oval-lanceolate, short, emitting the 
radial nervure from the middle.. ... xvi. MESOCRINA. 
(29) 82. Stigma linear, of equal breadth throughout. 
(84) 33. Radial nervure originating at the extreme base 
of the stigma ses xiv. ANISOCYRTA. 
(83) 35. Radial nervure originating at any other point 
of the stigma. 
(86) 34. Anal nervure interstitial or nearly so; terebra 
very short, almost concealed... xiil. ADELURA. 
(35) 36. Anal nervure springing from the middle of the 
extremity of the 2nd discoidal areolet ; terebra 
exserted, falcate ... “oc ae Bs . XVil. OrTHosTIGMA. 
1. Caasmonon, Hal. 
Hal., Ent. Mag., i., 486 (1833). 
Apterous in both sexes. Head flattened ; eyes minutely pubes- 
cent ; maxillary palpi 6-, labial 4-jointed. Second joint of the 
flagellum longer than the first (as in Genus xii.. Phanocarpa). 
Thorax much narrower than the head, compressed, subcylindric ; 
sutures of the mesonotum distinct, complete, crenulate. Abdomen 
@ oval, as long as and broader than the thorax ; belly compressed, 
obliquely truncate at the extremity ; abdomen ¢ narrower, some- 
what depressed. Terebra exserted. 
1. Chasmodon apterus, Nees. 
Bassus apterus, Nees, a Ges. Berl., 1814, p. 207. 
Alysia aptera, Nees, Mon., .» 264, d. 
CO. apterus, Hal., Ent. Maes Ve; 214, Or: 
Smooth, shining ; ferruginous, with the head and extremity of 
the abdomen blackish. Mandibles tridentate. Palpi ferruginous. 
