A new Hedgehog from Aden. 307 



References. 



(i) Adams. (1771.) ' Micrographica lUustrata, or the Microscope 

 Explained.' London. 



(2) . (1798.) ' Essays on the Micro.scope.' London. 



<j) Baker. (1743.) 'The Microscope.' London. 



(4) Bastian. (I860.) ' Monograph on the Anguillulidpe.' 



(5) UuQks. (1820.) Ann. des Sci. Nat. ix. p. 225, tab. xlvii. k xlviii. 



(6) DuJAHDiN. (1846.) Hist. Nat. des Ilelminthes, p.*243. 



(7) IIooKE. (1780.) * Microscopic Observations.' London. 



(8) Man, J. G. dk. (1910.) " Beitrage z. Kennt. der im dem weissen 



Schleimfluss der Eichen lebeuden Anguillulideu.'' Zool. Jahr- 

 biicher (Systematik, xxix. (Jena) pp. 359-394). 



(9) Oehley. (1880.) ' Moiiogvaphie der Anguilluliden.' 

 (10) Schneider. (1866.) ' Monographic der Nematoden.' 



(ii) Stiles & Hassall. (1905.) "The Determination of Generic 

 Types U.S. Department of Agriculture." Bureau of Animal 

 Industry, Bull. 79. 



(la) . (1920.) "Index Catalogue of Medical and Veterinary 



Zoology. Nematodes etc." Hygienic Laboratory, Bull. 104. 



XL. — A new Hedgehog from Aden. 

 By Oldfield Thomas. 



(Published by permission of the Trustees of the British Museum.) 



AmonQ some small mammals from the neiglibourliood of 

 Aden presented to the National Museum by Col. R. Meinertz- 

 hagen there occurs a small black hedgehog, which it seemed 

 natural to suppose would be the black auimal — Paraechimis 

 niger sahceiis — only recently described by me from that part 

 of Arabia. But on studying its skull I find that it is entirely 

 different, and apparently more nearly allied either to the 

 P. dorsalis group or to the Indian P, viicropiis. 

 It may be called 



Paraechinus oniacus, sp. n. 



Size small. Spines of average length, on the centre of the 

 back about 24-25 mm. long. General colour black, the 

 spines of the back black at base and tip, with two dull 

 whitish rings on them — subbasal and subterminal, — but these 

 are so much hidden as scarcely t') afEect the general colour ; 

 spines on sidos with minute and inconspicuous pale tips. 

 Whole of under surface, from chin t) auus, uniformly smoky 



