^ENTOMOLOGICAL CONTRIBUTIONS. 125 



The omission from the figure of an angle in the margin of the 

 posterior wings at the submedian nervnre, must, we think, be an 

 error in representation, as also the termination of the anal process of 

 the black spot, not in the anal angle, but wholly within the internal 

 margin. Errors so obvious and other probable ones, must necessarily 

 afford a poor basis on which to sustain a valid species. 



Mr. Grote, in his valuable papers on American Sphingidae, has 

 advocated the specific distinctness of Cerisyi* In one of them he 

 remarks : " The fact that Cerisii Kirby, is certainly distinct from 

 S. gemlnatus Say, an opinion I have entertained since studying 

 Kirby's description and figure, has been recently ascertained by the 

 discovery of specimens, as I am informed by Mr. S. Calverley." At 

 the present I have no means of determining the character of the 

 specimens referred to, but I cannot believe that they will prove 

 to be- different from the exceptional form obtained by me from the 

 deposit of S. yeminatus eggs above recorded. 



Mr. W. H. Edwards informs me that he has regarded S. Cerisyi 

 as a distinct form. He has, in his collection, a specimen taken far 

 north, by Kennicott, believed to be the only one in the country. 



Kirby's type is probably in the collections of the British Museum, 

 where, it is stated, the insects described in fauna Horeali-Aviericana 

 were deposited. 



From the very brief description of S. opthalmicus given by 

 Boisduval,f it was thought by Clemens to be possibly a variety of 

 S. yeminatus, having but a single eye in the ocellated spot. ^ Grote 

 and Robinson in their catalogue of X. A. Sphingidae, have recorded 

 it as a distinct species. 



Through the kindness of Mr. James Angus of West Farms, N. Y., 

 I have had the privilege of examining a beautiful specimen of the 

 species, received by him from California. It is structurally distinct 

 from S. geminatus, and is closely allied to 8. ocellatus of Europe, from 

 which however it differs materially. 



As near as I could determine without dissection, the antennae 

 consist of about forty joints having longitudinally on them a single 

 series of thin, nearly square laminae, each equal in length to the joint 



* Notes of Cuban Sphingidse. Proc. Ent. Soc. Ph., 1865, rol. v., p. 40. 



tLe 8. opthalmica aseez rapproche de notre ocettatw, plus voisin de Gemina de Say, mais 1'oeil 

 n'est pas double et il differe de toutes les especes du meme groupe par aa large bande brune, 

 anguleuse, qui traverse le milieu des ailes superienres. Ann. Soc. Ent. France, t. Hi., 3me ser. xxxii. 



* Jour. Acad. Nat. Soc. Ph., 1859, p. 184. 

 Proc. Ent. Soc. Ph., 1865, vol. v., p. 160. 



