194 THIRTIETH REPORT ON THE STATE MUSEUM. [gg] 



XIV. ON SOME NEW SPECIES OF CERURA. 



Cerura occidentals n. sp. 



Head white. Palpi white, blackish laterally. Antennae 

 white with black pectinations. 



Collar pale cinereous, traversed by a darker band and edged 

 behind by a black band. Tegulse pale cinereous, darker pos 

 teriorly ; the narrow black band crossing their front, followed 

 by a patch of orange scales, and a few black scales on their 

 inner side. Thorax marked with black and orange bands of 

 raised scales (apparently three orange bands).* 



Abdomen above cinereous, the segments bordered behind 

 witli pale cinereous ; beneath whitish : sides tufted with a 

 lateral row of small black spots. 



Primaries whitish basally, sprinkled with some black hairs ; 

 medially and terminally pale cinereous with more numerous 

 black hairs. A black basal dot on the subcostal ; an extra- 

 basilar row of five black spots on the nervures, usually, in 

 the males, in a straight line (5 examples), but sometimes the 

 two superior are nearer the base (2 examples)f; in the ? s (5 ex 

 amples) the two superior spots are considerably drawn in 

 toward the base, the line presenting quite a curve costally. 

 The median band of black and a few orange scales, paler than 

 in borealis and aquilonaris, broadest on the costa, elsewhere 

 of nearly uniform width ; its black borders subparallel ; the 

 inner border more distinctly marked ; its general course in the 

 male, direct or slightly excavating the band below the median, 

 while in the female it is conspicuously bent, on or below the 

 same nervure ; the outer border usually not well defined below 

 the submedian fold. Behind the median band, a black trans 

 verse line, interrupted on the cell and indistinct over the sub- 

 median fold. On the discal cross-vein, an elongated black 

 spot. Beyond this, two or three subparallel crescentiform 



*A cabinet specimen of this species is rarely seen, in which the thoracic scales 

 have not been so affected by greasing, that the bands can with difficulty be traced. 



fin five examples of the European bifida, this line curves outwardly at the 

 costal or on the inner margin ; in one example (female) it is straight. 



