NOVITATES ZOOLOGICAE XXIII. 1916. 



117 



Fig-2 



hook of the tenth tergite is slenderer in tacita than in eximia, bearing no trace 

 of a tooth or dilatation in tacita ; moreover, in tacita the portion of the segment 

 proximal to the curved apical hook is more 

 abruptly widened than in eximia. The apical 

 ridge at the right side of the penis-sheath (left 

 in figure) is rounded in tacita (text-fig. 2), and 

 the one on the opposite side short ; the whip 

 is broader in tacita than in eximia, being par- 

 ticularly broad in our Bolivian example of tacita, 

 less so in the one from Costa Rica. The dentate 

 processes of the penis-funnel are rather larger 

 in tacita than in eximia. 



The ? of eximia differs from the <S in the 

 yellow area of the hindwing above being slightly 

 smaller. 



Hab. Chiriqui, 2 <f(J and 1 ?, and 1 c? 

 without locality, in the Tring Museum. We 

 have 2 <S S of N. tacita Drnce (1888) from 

 Tuis, Costa Rica, September (W. Schaus) and 

 Rio Songo, Bolivia, 750 m. (A. H. Fassl). All 

 the specimens, with one exception, recorded from 

 other collections in the Revision from Mexico, 

 Peru and Bolivia are, we think, tacita, but it 



would be advisable to compare them again. Judging from the notes we took in 

 1902, the Staudinger collection contained at that time four specimens under the 

 name of tacita, of which one belongs to eximia. 



Text-pig. 



-Nyceryx tacita. 



3. Nyceryx continua cratera snbsp. nov. 



Nyceryx maxwelli, Rothschild and Jordan, Nov. Zool. ix. Suppl. p. 419. no. 352 (1903) (partim ; 

 S. Domingo). 



cJ. Major, supra magis grisescens, alis anticis magis variegatis, posticis in 

 disco brunneo notatis, limbo nigro-brnnneo ante marginem abdominalem ad basin 

 usque continnato, basi ipsa nigro-brnnnea. 



Al. ant. long. : 30 mm. 



Hab. Rio Songo, Bolivia, 750 m. (A. H. Fassl) ; and S. Domingo, Carabaya, 

 S.E. Peru, 6000 ft., June and August 1902 (G. R. Ockenden) ; 6 8 <S , type from 

 the Rio Songo. 



When we wrote our Revision of the Sphingidae we had only one specimen of 

 N. maxwelli Roths. (1896). The figures of the genitalia published in the Revision 

 were taken from this specimen. The second specimen mentioned in the Revision 

 was received while the work was in press. Considering it to be a somewhat different 

 example of maxwelli, we did not compare its genitalia. We now find that the 

 specimen belongs to a new subspecies of N. continua. 



We have six <5 <$ of A", maxwelli, from Bolivia, and Zamora, Ecuador, and a ? 

 from Theresopolis, Santa Catharina. The specimens of the new form of N. continua 

 are of the same size as these maxwelli, i.e. much larger than the Brazilian SS of 

 continua, but all differ from maxioelli (apart from the genitalia, which are in cratera 

 like those of N. continua. continua figured in the Revision) in the hindwing bearing an 



