2 CLARK — TWENTY-FIVE NEW SPHINGIDAE [ Vol'.^li?" 



Two corrections I wish to make 1 in my own past work, and 

 one note on the work of another. 



Orcein fruhstorferi Clark was described in these Proceedings, 

 Vol. VI, p. 15, pi. V, fig. 4. On page 99 of the same volume I 

 expressed a doubt as to its validity. Now, with a full scries of 

 0. lycidas eos before me, and a male and a female of 0. lycidas 

 lycidas, I fool confident that 0. fruhstorferi is a valid species. 



Poliodes senegalensis Clark was described in Volume VII, 

 page 69, of the Proceedings. My friend Mr. Andrey N. Avinoff 

 has called to my attention the fact that this species should be 

 placed in the genus Polyptychus. It should stand as Polyptychus 

 senegalensis Clark. 



Having recently received in exchange from the Berlin Museum 

 a cotype of Polyptychus inconspicuus Strand, a female, I have 

 compared it with a female of Polyptychus hollandi R. & J., so 

 designated by Dr. Karl Jordan. It is my belief that the two 

 forms are identical, and that P. inconspicuus should be con- 

 sidered a synonym of P. hollandi. 



Herse convolvuli peitaihoensis subsp. nov. 



Al. ant. long., d\ 36 mm.; 9, 37 mm. Al. ant. lat., d 1 , 14 mm.; 9, 

 15 mm. Marg. ext., d\ 19 mm.; 9, 20 mm. 



Habitat. — Pei-tai-ho, northern China. One male and one female in coll. 

 B. Preston Clark, received from Dr. O. Staudinger and A. Bang-Haas. 



This form differs from all the specimens of H. convolvuli 

 which I have had the opportunity of examining, in that it does 

 not show the tendency to dimorphism so general in H. convolvuli, 

 in which the markings of the male are distinct, while the female 

 tends to a more uniform gray tone. 



In peitaihoensis both sexes uniformly have throughout a 

 brightly white appearance in their ground tone, and because of 

 this fact both have a highly variegated appearance. This 

 uniformity of coloration in the two sexes and the highly varie- 



