70 [August 



the United States. This latter species differs throughout from Drury's 

 figure, and from the insect I here describe and figure, and which must 

 approach Drury's very closely, if it be not, as I conjecture, identical 

 with it. As to what Mr. Walker intends under Macrosi/a Brontes, I 

 am io-norant. The small head, the rounded external martrin of ante- 

 rior wings, with the internal angle not exserted, the three black inter- 

 spaceal dashes, are all characters, in addition to numerous other, less 

 prominent, which quickly distinguish C repentinus from Drury's figure 

 and the insect I now describe. 



Head large and prominent; eyes salient; thorax and abdomen hardly 

 so stout as in Drury's figure, which exceeds my specimens in expanse 

 and general size The markin<rs of the anterior winas coincide with 

 Drury's figure, except that the discal spot is white, the brown subter- 

 minal space is narrower and paler. The external margin is straight. 

 internal angle exserted. Terminally there is a series of Y-shaped black- 

 ish marks on the veins, which is characteristic of Drury's figure and 

 very difierent from C. rppentinus in this respect; the course of all the 

 transverse lines and markings are quite alike in Drury's figure and my 

 specimens. 



The posterior wings differ from Drury's figure, but not perhaps so 

 greatly, that the latitude we may allow for the roughness of the figure 

 will not cover it. Before anal angle there is a cinereous patch, as in 

 Drury's figure. Medially the wing is crossed by three propinquitous 

 dark lines, with a paler series of scales between the first and second 

 line. In Drury's figure these lines are not indicated, while a whitish 

 band is drawn, undulating, across the wing. Could I but reconcile this 

 disparity, I should be confident that I had Drury's species before me. 



I have at least shown that Dr. Clemens' C )-epentinus is a good spe- 

 cies, and should not be confounded with Drury's S. brontes while I 

 have less evidence to prove that the present is the species that Drury 

 intended. Drury's description does not allude to the whitish band on 

 the inferior wings, and, while doubtful on the whole, whether it be worth 

 while to try and identify a figure of so indifferent an execution, I pro- 

 pose that the present species be considered as the species intended by 

 Drury, ad interim at least, till one better suited be found, in which lat- 

 ter event I propose for the present species the name of Sphinx cubensus. 



Two specimens, S and $ . Exp. % 3.50, $ 3.60 inches. Length of 

 body, % and $ 1.80 inch. 



Habitat— Cuba, (Poey.) Coll. Ent. Soc. Philad. 

 Number 86 Poey a MSS. Catalogue. 



