P A P I L I O Memnon, 



Memnon Butterfly. 



Fam. Papilionidse. Sub-Fam. Papiliome. Genus Papilio. — $iv. 

 (Typical form or Sub-genus.) 



Sob-Generic Characters. 



Wings without tails ; the anterior horizontally lengthened, entire ; 

 the posterior margin concave ; posterior wings perpendicularly 

 lengthened, the margin rounded and scolloped ; antenna? long. 

 Larva smooth; Pupa braced in an erect position. 



Sub-Types oe form. I. Typical, Memnon. 2. Sub-typical, 

 Erectheus. 3. Aberrant, Paminon, Drusius ? Codrus. 



Specific Character. 



Wings black, rayed with blue-grey ; inferior icings beneath ivith tico 

 rows of marginal black spots on a pale ground, unci four red 

 spots at the base. 



Papilio Memnon, Linn. Auct. Ency. Meth. 1. p. 29. No. 10. 

 Cramer, pi. 91. f c. 



Although of sombre colours, this butterfly is imposing 

 in its size, and highly interesting'. It is, in fact, that form 

 which is pre-eminently typical of the whole of the Latri- 

 ellian Papilionidse. it seems to be common throughout 

 India and particularly so in Java, from whence we -possess 

 several specimens. Dr. llorsfield's elaborate work has 

 furnished us with figures of the caterpillar and chrysalis. 

 In now first defining some of the natural groups of 

 the modern Genus Papilio, it may be as welt to state 

 that we give the results of minute analysis, the details 

 of which we hope to lay before the public on a future 

 occasion. In regard to the nomenclature, we have 

 adopted the following principles, suggested to us by a 

 scientific friend of no ordinary authority, as tending to 

 facilitate recollection, without altering* well known specific 

 names. Each genus or sub-genus will be named after 

 that species which is its peculiar type ; and the new 

 specific name of this species will imply one of ils supposed 

 natural analogies. Thus the sub-genus Protesilaus t 

 derives its name from the typical species, while the 

 specific name, now proposed of Leilas, points out the 

 analogy of the group to Urania Tab. The sub-genus 

 we now define, as being in our estimation, pre-eminently 

 typical, retains the name of the genus. It seems also 

 a geographic group, since all the species yet discovered 

 belong to the old world. 



95. 



