434 PROCEEDINGS OF THE ACADEMY OF 



est une espece toute differente, malgre sa ressemblance avec celle 

 d'Europe." 



M. Gucnee states that Abbot's figure of the American Ortho- 

 sia seemed entirely identical with the European Lota; some allow- 

 ance should be made, however, for the necessary imperfection of 

 a drawing, which, though giving the general impression of the 

 insect, would be likely to omit the nice shades and markings of so 

 great importance in its correct determination. 



In fact the American specimen before me, compared with a 

 large number of the true lota, presents many differences, which 

 together with the entire dissimilarity of the larvae (in case Ab- 

 bot's observations are verified) seem to require a separate desig- 

 nation. I propose therefore the name Orthosia americana. 



These are the differences between the perfect insects : in 0. am- 

 ericana the ground color is suffused with carneous and less purely 

 grayish than in 0. lota ; the transverse lines are less distinct ; the 

 orbicular spot is upright and figure of eight shaped, formed of 

 two annuli just touching, not a single very oblique narrow annulus ; 

 the reniform spot is wider, larger, and more distinctly quadrangu- 

 lar; the light subterminal line is more evident, distinctly bent 

 below the middle, and having two slight projections correspond- 

 ing to the usual teeth, and in particular it is preceded by a broad 

 conspicuous red shade, instead of a narrow linear one; and finally 

 on the under surface of the posterior wings the median line is 

 narrow and twice undulate, not broad and nearly curved. 



The question cannot be considered as settled until the larva of 

 0. americana is discovered and compared with that of 0. lota, but 

 for the present the presumption is in favor of the distinctness of 

 the species. 

 Thalpochares carmelita (nov. sp.)- 



Expanse 15 mm. Length of body V mm. 



Eyes naked. Ocelli present. Head, thorax, and abdomen 

 slender, white. 



Anterior wings white, having a strong tooth at about the 

 middle of the inner margin, as is seen on a much larger scale in 

 Cahjpe and some European species of Lophopteryx ; costal por- 

 tion of the basal space olivaceous; the wings are crossed by two 

 suffuse broad dull olivaceous bands, the first reaching the inner 

 margin at the tooth, the second or subterminal line crosses the 

 wing at the usual place ; it is followed by two black dots, one at 



