INDEX— INTESTINES 459 



which, L. nnpeianus (Monal) was brought into notice by Sir Elijah 

 and Lady Impey (cf. Latham, Gen. Synops. B. Suppl. p. 209). 



INDEX, the second finger, in Birds always the best developed 

 of the digits of the fore-limb. It frequently possesses the original 

 number of three phalanges, and often bears a horny claw, especially 

 in Ratit.e and in the embryos of Accipitres and Anseres (see 

 Skeleton). 



INDIGO-BIRD, so called from its deep blue colour, in part 

 tinged with green, a well-known North -American species, the 

 Cyanospiza, Spiza or Fasserina of modern authors,^ belonging to a 

 small group of Finches or Buntings (for anatomy has not decided 

 which), mostly of great beauty, rivalling some of the Tanagers in 

 their bright plumage. American ornithologists give full accounts 

 of the habits of this bird, together with those of its equally gay 

 congener the Lazuli Finch, C. amoeiia, and the still more gaudy 

 Painted Bunting or NONPAREIL, 0. ciris. 



INEPTI, Illiger's name in 1811 for a "Family" of Birds 

 consisting of the genus Didus (DoDo). 



INERTES, an "Order" proposed by Temminck in 1820 to 

 contain the genera Apteryx (Kiwi) and Didus (Dodo). 



mSECTIVORES, Temminck's third " Order " of Birds in 1820 2 

 {Man. d'Orn. ed. 2, i. pp. Ivi.-lxix. and 139), a name that has 

 been used by a few other writers, but long since disregarded, not 

 only as containing a very unnatural congeries of Birds, but as having 

 been anticipated in 1817 by Cuvier's Order of Mammals, Insectivwa. 



INSESS0RES,3 the name given by Vigors in 1823 {Trans. 

 Linn. Soc. xiv. p. 405) to the second Order of Birds in his classifica- 

 tion containing nearly all the Pic^ and Passeres of Linnseus, and / ^ 

 practically equal to the Ambulatores. of Illiger. Though long (%W j^flt^fi 

 accepted without hesitation by most British and many foreign ^ z' aa >^w 

 authors, the composite nature of the group has now been recognized, ^ ff 

 and the use of the name is generally abandoned. 



INTESTINES originally signified all the soft parts within the 



^ Cyanospiza seems to be the- right name, since Bonaparte in 1827 expressly 

 stated (Specchio Comp. Orn. di Roma e dl Filadelfia, p. 47) that the type of liis 

 Spiza was the Emheriza americana of Gmelin, which is not congeneric with the 

 present species, though afterwards [Comp. List B. Eur. <fc N. Am. p. 35) retain- 

 ing Spiza for this group. Fasserina though older than either is by ancient 

 practice wholly inadmissible, having been long before used in Botany. 



- Often stated to have been given by him in 1815 {Man. d'Orn. ed. 1, p. xx. ), 

 but he then used Canori for what is practically the same group. 



^ From the Latin insldere to perch, not incedere to walk, as is often supposed. 



