1894.] OS LEPIDOPTERA FKOM BRITISH BAST AFRICA. 557 



Por the present we are content merely to point out the very 

 wide distinctions existing between the genera Chauna and Palor- 

 medea. Those who are best acquainted with the anatomy of birds 

 will realize most readily how considerable these distinctions are. We 

 hope on a subsequent occasion, when we have had the opportunity 

 of examining again and more minutely some points in the struc- 

 ture of Chauna, to deal with the systematic position of the Paia- 

 medeidse. The fact that so great differences obtain between the 

 genera is confirmatory of the generally received opinion that this 

 form is one of great antiquity. 



8, On a Collection of Lepidoptera from British East Africa, 

 made by Dr. J. W. Gregory between the Months of 

 March and August 1893. By Arthur G. Butler, 

 Ph.D., F.L.S., F.Z.S., &c., Assistaut-Keeper Zoological 

 Department, British Museum (Nat. Hist.). 



[Eeceived June 8, 1894.] 



(Plates XXXVI. & XXXVII.) 



The present collection is rich in species and in number of 

 specimens, though, unfortunately, many of the latter are not in 

 first-rate condition : indeed most of the small moths are unidenti- 

 fiable. Nevertheless the collection contains several novelties, a 

 fair series of specimens in good preservation, and is particularly 

 interesting as including a considerable number of grades between 

 species which hitherto have been easy to distinguish, but are now 

 clearly shown to be, at most, localized dimorphic developments 

 from one widely-distributed species. 



Of the species which it has been possible to name, or, at any 

 rate, to assign to then' genera, there are no less than 215, of which 

 10 are described as new to science. Of the remainder several are 

 new to the Museum, whilst others have previously only been 

 i-epresented by single examples. 



Of Butterflies previously received from Somali-land the collection 

 contains the following : — 



1. LiMNAS CHRXSIPPUS (vars. doripjnts and Jdur/i). 



2. Tpthima asteeope. 



3. Neoccenyra duplex. 



4. JinfoifiA (Precis) limnoria. 



5. JUNOKIA CEBRENB. 



6. Byblia ilithyia {Hyixmis ilithyia of my SomaU paper). 



7. Hamanumida d^balus. 



8. poltommatus b.eticus. 



9. Catocheysops osieis. 



10. Teeias zoe. 



11. Teeacolus heltolus (separated subsequently to the publi- 



cation of my paper on Somali Lepidoptera). 



