636 PROCEEDINGS OF THE NATIONAL MUSEUM. 



the apex of the wing, the vein R^ being continued spur-like beyond the 

 apex of the cell. In Scolkmeura the radial cross-vein is interstitial 

 with the free part of Rj, and the base of the free part of the third 

 anal is preserved, though its connection with the other anal veins at 

 the contraction is wanting. The radio-medial cross-vein is present, 

 although almost entirely covered by the radial furrow. In Entodecta 

 the base of the third anal vein is represented in the wing membrane 

 as a dark, straight band. 



Blennoc,ainpm». — This and the two following subfamilies begin a 

 series in which the costal area has been greatly reduced, and the free 

 part of Sci is represented only by a spur (iigs. 69-72). The Blenno- 

 campinpe is a large group rich in genera and species, in which system- 

 atists have placed a number of genera bearing no relation to the group 

 at all, as here restricted. The costa is prominent and thickened at 

 apex; the medio-cubital cross-vein is joined to radius in the angle 

 between radius and media and is usually parallel with M.,+^, very 

 slightl}" divergent in RJiad'moceva^n ; the base of the third anal vein is 

 partly atrophied, different genera showing the successive stages in the 

 atrotication of this vein; the free part of M^-fCuj varies in position 

 from near the middle of the cell M^ to a position almost interstitial 

 with the medio-cubital cross-vein. In the hind wings the free part of 

 R^ and the transverse part of M^ are wanting in certain genera; the 

 hrst anal cell is of varying lengths, the first and second anal veins 

 being coalesced from a point opposite the free part of M3 to near the 

 middle of the distance between the base of the wing and the free part 

 of M3; the cell R]+^ usually ends just before the apex of the wing, 

 but in Perlollsta R., ends at the actual apex, the cell being closed; in 

 the males of certain species the apex of the wing is margined by an 

 ambient vein as in the males of certain Phyllotomina\ 



Ilylotoiiih)^ (did (dlifs. — This group (tigs. 76-80) includes three 

 subfamilies, the Hylotominte, Schizocerinaj, and Perreyin*. As onl}'^ 

 a very limited amoinit of material of the last two subfamilies is at 

 hand for study, it will be impossible to more than point out some of 

 the more salient characters of the group, and for this reason the 

 groups are given the same limits in the table on another page that is 

 generallv assigned them by systematists. It seems doubtful that these 

 groups as now arranged represent natural divisions. The Hylotomin^ 

 and Schizocerinie are ditl'erentiated ])y the modei'ately broad costal 

 area together with a well-marked Scj, which is conmion to the former 

 and wanting in the latter, while both conditions are found in the Per- 

 re3'in{e. The characters above given would place the genera JJylotoma 

 (fig. 76) and Paclujlota (fig. 77) in the same subfamil3\ In both the 

 cell Ri+2 of the front wings is prominently appendiculate, but in the 

 hind wings of Pachylota this cell is open at the apex, the veins Rj and 

 R3 extending parallel to the margin of the wing. This condition is also 



