396 DR. O. STAUDINGER ON THREE" [May 2, 



a more generalized form than either of the known species, showing 

 more resemblance to the other types of Ziphioids. One of its chief 

 points of interest is the locality in which it was found. Although 

 Ziphius and Mesoplodon are both cosmopolitan genera, and Berardius 

 an inhabitant of the Southern hemisphere, no specimen of the genus 

 Hyperoodon has hitherto been met with anywhere but in the North 

 Atlantic. 



2. On three new and interesting Species of Rhopalocera. 

 By Dr. O. Staudinger. 



[Keceived April 24, 1882.] 

 (Plate XXIV.) 



Papilio HAHNELi, sp. n. (Plate XXIV. fig. 1.) 



This wonderful new species was discovered by Dr. Hahnel in the 

 autumn of 1880 near Massauary, on the Rio Manes, Lower Amazons. 

 He only took the d" here figured and a somewhat damaged $, 

 just like the c? , only a little larger, and the anal angle of the under 

 ■wings not produced as in the S • 



The fore wings of this species remind one of the genus Thyridia. 

 Papilio hahneli comes nearest to P. triopas, Godt., although quite 

 distinct from it. 



Length of the fore wing of the <S 48 millimetres, of the $ 51 

 millimetres. Fore wings black, with three transparent smoky yellow 

 spots at the base after the middle and near the apex. Hind wings 

 yellowish, deeply bordered with black, the outer margin serrate and 

 with a long tail on costa (4 sect. Uerrich-Schajfef). 



The anal angle in the c? is very sharp and produced, in the $ 

 very slightly so, but rather rectangular. 



Head, body, and legs black, excepting a carmine spot on each side 

 at the base of the body ; the female has a similar spot below the 

 anal segment, which the male has not. There is also a trace of a 

 little reddish spot below the head (on the prothorax), aud some 

 reddish hairs on the mesothorax above the middle legs. 



1 have named this species in honour of the discoverer Dr. Hahnel, 

 who is doubtless one of our best collectors, and has discovered other 

 new species of Lepidoptera on the Amazons, where he is still at 

 work. 



Heliconius VENUS, sp. u. (Plate XXIV. fig. 2.) 



This new species was taken by Ilerr E. Trotsch on the river San 



Juan, in Colombia, in some numbers, together with almost equal 



numbers of H. vulcanus, Butler. 



Both sjjecies are at the first sight very similar, almost exactly so. 



They are black, with broad red spots behind the middle of the fore 



wings. They are distinguishable by the following characters : — H. 



venus has on the upperside a brilliant deep steel-blue reflection, which 



