58 MR. ST. GEORGE MIVART ON HEMICENTETES. [Jan. 17, 



13. SOMATERIA V-NIGRUM. 



One of eight eggs taken near St. Michael's, Norton Sound. It is 

 smooth and of a pale olive-green, measuring 2'4 in. X \'67 in. 



14. Chen hyperboreus. 



From the Arctic coast, eastward of the Anderson River. It is of 

 a warm yellowish-white, but much obscured by dirt, and measures 

 2-93 in. X 2-09 in. 



EXPLANATION OF PLATE IV. 



Pig. 1 . Egg of Numenius bnrealis, p. 56. 



2. „ Calidris arenaria, p. 56. 



3. ,, Numenius hudsonicus, p. 57. 



4. „ Larus franklini, p. 57. 



5. „ Xema sabinii, p. 57. 



6. ,. Chroicocephalus Philadelphia, p. 57. 



7. „ Chionis minor, p. 57. 



8. „ Theristicus melanopis, p. 56. 



4. On Hemicentetes, a new Genus of Insectivora, with some 

 Additional Remarks on the Osteology of that Order. 

 By St. George Mivart, F.R.S. 



[Eeceived January 17, 1871.] 

 (Plate V.) 



Hemicentetes madagascariensis. 



Erinaceus madagascariensis, Shaw, Gen. Gool. i. 2. p. 458. 



Erinaceus ecaudatus, Schreber, iii. p. 584, tab. 165*. 



Erinaceus semispinosus, Cuvier, Reg. An. 1st edition, p. 136. 



Setiger variegatus, Geoff. St.-Hilaire, Nouv. Diet, xxxii. p. 54. 



Centenes semispinosus, Cuvier, Regne Anim. i. p. 125 ; Des- 

 marest, Mamm. p. 162. no. 253. 



Centetes semispinosus, Fischer's Synopsis, p. 245. no. 3 ; Isid. 

 Geoff. St.-Hilaire, Diet. Class, xvi. p. 41, and Magasin de Zoologie, 

 1839, pp. 15 and 32; Wagner, J. A. Schreb. Supplem. ii. pp. 35 

 and 553, and v. p. 583. 



Centetes madagascariensis, Gray, Mag. Nat. Hist. 1836, and List 

 of Mammalia in Brit. Mus. 1843, p. 82. 



Lejeune Tanrec, Buffon, Hist. Nat. Suppl. iii. p. 214, tab. xxxvii. ; 

 Sonnerat, Voyage a la Chine, torn. ii. p. 146. 



Asiatic Hedgehog, Pennant's Quadrupeds, ii. p. 236. 



The curious insectivore the osteology of which is now, I believe, 

 for the first time described, has been very long known, having been 

 well figured by Buffon in 1776. Nevertheless it was considered 

 by M. Isidore Geoffroy St.-Hilaire a species determined from imma- 



