1866.] MR. ST. GEORGE MIVART ON MICRORHYNCHUS. 151 



This species is most nearly allied to C. macrostoma, Hinds, but is 

 smaller and more attenuated ; the last whorl is angulated in the 

 middle and more contracted, and the sculpture, although of the same 

 character, is more sharply defined ; it is also without any of the 

 coloured markings which distinguish C. macrostoma. 



4. On the Structure and Affinities of Microrhynchus laniger. 

 By St. George Mivart, F.L.S., F.Z.S. 



(Plate XV.) 



Microrhynchus laniger (Linn.). (PI. XV.) 



Lemur laniger, Linn. Syst. Nat. ed. Gmelin, i. p. 44.no. 10; 

 Shaw, Gen. Zool. i. p. 99, pi. 34 ; G. Cuvier, Regne An. t. 1. p. 29 ; 

 Blainville, Osteogr. Lemur, pis. 8 & 1 1 . 



L. lanatus, Schreber, Saug. pi. 42 a. 



Lichanotus laniger, Illiger, Prodromus, p. 72. 



L. avahi, Van der Hoeven, Tijdschr. v. nat. Gesch. xi. p. 44. 



Indris longicaudatus, Geoffroy St.-Hilaire, Ann. du Mas. xix. 

 p. 158; Mem. sur les Makis (1796), et Tabl. des Quad. (1812); 

 Desmarest, Mammalogie, p. 97. 



Indris laniger, Smith, S. Afr. Journ. (1835) ii. p. 27. 



Indri laniger, Fischer, Syn. p. 73, et Anat. der Maki (1804), 

 p. 16. 



Se?nnocebus avahi, Lesson, Species (1840), p. 210. 



S. laniger, Vrolik in Todd's Cyclop, of Anat. & Phys. iv. p. 215. 

 f. 136. 



Habrocebus lanatus, Wagner, Schreber, Suppl.i. p. 258 ; v. p. 140. 



Avahis laniger, Isid. G. St.-Hilaire, Lecons des Mamm. et Cat. 

 Primates, p. 69 ; Paul Gervais, Mammiferes, pt. i. p. 164, pi. 7. 



Avahi, Jourdan, L'Institut, t. ii. p. 231, 1834; Chenu, Eucyclop. 

 d'Hist. Nat. Quadrumanes, p. 256, pi. 32. 



Microrhynchus laniger, Jourdan, These inaug. a la Fac. des Sc. 

 de Grenoble, 1834 ; J. E. Gray, P. Z. S. 1863, p. 141 ; St. George 

 Mivart, P. Z. S. 1864, p. 638. 



Maquis a bourres, Sonnerat, Voy. aux Indes Orient, t. ii. p. 142, 

 pi. 89, 1782. 



Autre esphce de maki, Buffon, Suppl. vii. p. 123, pi. 35. 



This species was first described and figured by Sonnerat in his 

 'Voyage aux Indes Orien tales '* ; but the muzzle is drawn much 

 too long and pointed. The animal is moderately well represented in 

 plate 35 of the seventh supplementary volume of Buffon's ' Histoire 

 Naturelle,' published in the ever memorable year 1789. 



In 1839 an excellent representation of the skull and dentition ap- 

 peared in De Blainville's ' Osteographie,' Lemur, pis. 8 and 11. 



* Vol. iv. p. 92, and pi. 87, in the octavo edition in the library of the British 

 Museum. 



