84 Mr. W. J. Kaye on new Nymphalidse dec. 



An Atlantean Group? 



Species of terrestrial arthropods peculiar to our country are 

 rare, and particularly so if we consider groups which have 

 had an equal or greater attention from Continental naturalists. 

 Since the pioneer work of Newport, Leach, and (later) Meinert 

 and Latzel, the Central and Southern European " Myriapods " 

 have received close study, whilst until very recently the 

 British forms have been entirely neglected. Yet here we 

 have a natural group containing four species* widely distri- 

 buted in this country, not extraordinarily small and without 

 any near relatives on the Continent. If the group had its 

 centre of distribution in Western Europe, then it would have 

 spread east and south, and remnants would have surely been 

 found on the Continent of to-day. Similarly, were the group 

 of Lusitanian origin it would be more richly represented in 

 the Mediterranean subregion than with us. But not only is 

 Brachych&teuma or allied genus unknown elsewhere, but its 

 distribution with us (north, south, midlands, east, and west of 

 England) does not suggest a Lusitanian group, and we are 

 thus forced to suggest that Brachychceteuma is of Atlantean 

 origin, and that in the very dim past it formed a modest 

 member of the fauna of the old continent of Atlantis. 



XII. — New Species and Genera o/Nymphalidpe, Syntomidre, 

 and Sphingidse tn the Joicey Collection. By W. J. Kaye, 

 F.E.S. 



Family Nymphalidse. 



The confusion over certain species of Callithea is consider- 

 able, and as a foreword to the description of the new forms 

 that follow it is as well to state the position adopted. Calli- 

 thea davisi was described by Butler (Ann. & Mag. Nat. Hist. 

 ser. 4, vol. xx. p. 123, 1877), as Hewitson had confused two 

 species under one name — markii. Fig. 2 of Hewitsou (Ex. 

 Butt., Callithea, pi. i.)— the first under the species — becomes 



* For description of the fourth species see Brade-Birks, Hilda K. and 

 Kev. S. G., " Notes on Myriapods.— XII. A Preliminary List for Derby- 

 shire, with a Description of Brachychceteuma quartum, sp. n., and Chord- 

 eumella icutellare bagnalli, var. n.," Ann. & Mag. Nat. Hist. ser. 9, xi. 

 pp. 319-336, figs., Oct. 1918. 



