53 
M, from lower angle of areole; M2, M: and Cu, from around lower angle of 
cell; Cu, from well before angle, discocellulars obsolete. Secondaries well 
rounded outwardly, S. C. separating widely from cell before middle of same. 
discocellulars obsolescent, angled inwardly; Ri: and M; shortly stalked; M2 from 
just above lower angle of cell; Ms; and Cu, connate from lower angle of cell or 
slightly stalked; Cu. from well before lower angle; frenulum present. 
The areole varies considerably in size, specimens with a reduced 
areole usually have vein R, slightly stalked with R, + R,; veins M, 
and Cu, of secondaries are also variable in position. 
O. ACHATINA A. & S. 
Phalaena achatina Abbot & Smith, Lep. Ins. Ga. II, 153, Pl. 77 (1797). 
Orgyja achatina Hubner, Verz. bek. Schmett, 161, 1677 (1816). 
Dasychira achatina Walker, Cat. Lep. Brit. Mus. IV, 865 (1855); Morris, Syn. 
Lep. N. Am. p. 257 (1862). 
Parorgyia achatina Grote & Robinson, Proc. Ent. Soc. Phil. VI, 3 (1866) ; Pack- 
ard, 5th Rep. U. S. Ent. Comm. p. 135 (1890). 
Olene achatina Dyar, Bull. 52, U. S. N. Mus. p. 260 (1902); id. Proc. Ent. Soc. 
Wash. XIII, 16 (1911). 
This species has never been definitely identified ; it has been largely 
confused with parallela, G. & R., which is a form of obliquata G. & R., 
by Packard and late authors, but, as Dyar points, out the larva of this 
latter form, as described by Seifert, differs greatly from Abbot’s figure. 
The larva, as depicted by Abbot, approaches very closely that of the 
Florida form of basiflava Pack., which has generally been confused 
with leucophaea A. & S. for some reason or other. These larvae, how- 
ever, have scattered black plumed hairs in the lateral tuftings, which 
are entirely absent in Abbot’s figures. Apart from the prominent logi- 
tudinal dash the figures of the adults bear out the relationship above 
hinted at; both the Florida form and the true basiflava Pack. (clintonii 
G. & R.) have that mossy appearance in the fresh 3’s which led Abbot 
to bestow the name achatina; furthermore all three forms show promi- 
nent black dashes in the brown subterminal band of the @ near apex 
of primaries, a feature not found in obliquata G. & R. or parallela 
G.& R. 
The black dash in submedian fold, which Abbot mentions as the 
distinguishing character of achatina may or may not be of specific 
value; Seifert has proved conclusively that in obliquata G. & R. it may 
be present or absent. In the material before us of the Florida form 
we have found no specimens with such a dash, which of course does 
not prove that it may not occur; it is quite possible that Abbot’s figure 
