224 Mr. H. G. Smith on a new Papilio. 



diameter) of this species from the Inferior Oolite of Caen, 

 Normandy (B.M. no. 37024). The anterior boundary (a) 

 of the impression can be distinctly followed from the umbili- 



Fig. 6. 

 a 



\ 



cus on the one side across the periphery to the umbilicus on 

 the other side ; but no trace exists of the posterior boundary. 



The above figures (3-6) show how closely the Jurassic 

 species of Nautilus approximate, as regards their muscular 

 attachment, to the recent Nautilus ; and this analogy may be 

 carried still further back in geological time judging by the 

 figure of a Triassic species (A r . salinarius) given by Moj- 

 sisovics *, in which a considerable portion of the anterior 

 boundary of the shell-muscle is preserved. 



We are indebted to the kindnsss of Dr. H. Woodward, 

 F.R.S., for the use of the woodcuts illustrating this paper. 



XXXII. — Description of a new Papilio from the West Coast 

 of Africa. By H. Grose Smith. 



Papilio harpagon. 



Male. — Upperside. Both wings blackish brown, with 

 brownish-white spots and bands, as in P. ucalegon, Hew., but 

 on the anterior wings the spot towards the end of the cell, and 

 the band, below the median nervure, is broader, and in the 

 middle of the cell is an indistinct brownish- white spot. On 

 posterior wings the band is broader and extends externally as 

 far as the end of the cell. 



Underside. Anterior wings as on the upperside. Posterior 

 wings with an orange-coloured spot at the base inside the 

 precostal nervure and another beyond it divided by the costal 

 nervure, followed by three large, indistinct, black spots ; a 

 short indistinct streak of orange colour bslow the median ner- 

 vure at its base. 



Expanse of wings ?>\ inches. 



Hah. Gaboon. 



Very near to P. ucalegon, but blacker, with wider bands, 

 and otherwise differing as above described. 



In the collections of Mr. Crowley and H. Grose Smith. 



* " Die Cephalopoden der Mediterranen Trias-Proviuz " (Abh. d. k. k. 

 geol. Reiehsanst. Rand x.), 1882, pi. xci. fig. 3 a. 



