18C4.] 878 



and its wanting any green tint, will easily separate this species from 

 any other known to me. 



Lochmaeus unicolor n. sp. 



% . Of an uniform pale cinereous, with a faint greenish tinge, with- 

 out any bands or spots. Costa very straight. A faint series of pale 

 longitudinal lines situated on the nervules. crosses the primaries near 

 the base of the nervules. Besides these linear spots there are no other 

 markings on the wings, nor is any one portion of the wing darker than 

 any other. The head, palpi and pectus, and under side of the body is 

 a very pale argillaceous. The secondaries are a little darker above. 



The moth has a faded passe look that is quite characteristic, and will 

 distinguish it from its allies. 



Length of body, .85; exp. wings, 1.85 inch. 



Seekonk, R. I., where it has occurred more frequently than any other 

 species. (Coll. Mrs. Bridgham.) Cambridge, (Coll. Dr. Harris.) 



Lochmaeus marina n. sp. 



Pale sea green, dusted very minutely with ashen scales. Nervules 

 slightly cinereous. On the outer third of primaries is a rather irregu- 

 lar curved series of dark dots, bordered externally with white. The 

 end of the nervules are dark. 



Secondaries pale cinereous, one straight mesial obscure dark spot. 



Beneath, pale ; body and both wings almost white ; the latter are 

 crossed by a dusky line. 



Exp. wings, l.GO inch. 



Seekonk, R. I., (Coll. Mrs. Bridgham.) 



PLATYCERURA* nov. gen. 



Head large and prominent, twice as large as in Cerura ; front scu- 

 tellate, broad between the antennae, while the sides are more parallel 

 than in Cerura. Scales short and fine. Palpi short, a little depressed, 

 not reaching the front, compressed and slender; the ord joint short, 

 obtuse. Antennae longer than in Cprura. very narrowly pectinated ; 

 joints longest in the middle, but slowly decreasing in length towards 

 the tip. which is almost simple. Thorax stouter than usual, no " collar " 

 or transverse lines. 



Primaries short broad triangular, half as long as broad. Costa 



•■■■"TrXaTu; broad, Cerura. 



