AYES. 
67 
Milne-Edwards, a. Remarques sur les ossements de Droute 
(Didus ineptus) nouvellement recueillis h Tisle Maurice. 
(See special part; under Dididje.) 
. Observations sur les caracteres osteologiques des 
principaux groupes de Psittacidees pour servir k la deter- 
mination des alRnites naturelles du Psittacus mauritianus, 
(See special part, under Psittaci.) 
NeuberT; W. Ueber Sclmabelmissbildungen. Zoolog. Garten; 
1866; pp. 247-249. 
A curious case of malformation of the mandible in Melopsittacus undu^ 
latus is illustrated by a figure. 
OwEN; Richard. On the Anatomy of Vertebrates. Vol. II. 
Birds and Mammals. London : 1866. 8vO; pp. 1-265. 
The part of this volume which we have here to notice is 
founded almost entirely upon the article Aves which the 
author wrote for Todd’s ^ Cyclopredia of Anatomy/ published in 
1833; with; of course; many additions, which the advance of 
knowledge has rendered necessary. This long-expected work 
supplies a very great void, and, without doubt, has no rival. It 
must; however; be confessed that the systematic ornithologist 
will not receive as much help from it as he might be dis- 
posed to anticipate. The class Aves is divided into seven 
orders ; but these are not defined anatomically; nor; indeed, are 
the characters drawn from external features always very precise : 
thus the definition of Natatores would include the Avocct, and 
that of Grallatores the Elamingo. Prof. Owen’s classification 
is as follows : — 
Order I. Natatores. Sample families J (1) Brevipennatce, 
(2) LongipennatdSy (3) TotipalmatcHy (4) Lamellirostratce. 
Order II. (Trallatores. Sample families : (1) Macrodactyli, 
(2) CultrirostreS) (3) Longirostres, (4) Pr'cssirostres. 
^ ^ r Suborder Gallinacei or Clamatores. 
Order III. Uasoms | Columbacei or 'Genitores. 
Order IV. Cantores. Sample families : (1) BentirostreSj (2) 
Conirostres y (3) Tcnuirostres, (4) Fissirostres . 
Order V. Volitores. Sample families: (1) Cypsclidcey (2) 
Trochilid(By (3) Caprimulgidce, (4) Trogonidae, (5) Prionitidaiy 
(6) Meropidai, (7) Galhulid(By (8) Coraciadce, (9) Capitomd(P,j 
(10) Alcedinidee, (11) Bucerotidee. 
Order VI. Scansores. Sample families : (1) Bhampliastidoii 
(2) BucconideSy (3) Cuculiday (4) Picidce, (5) Musophagidcs, 
(6) ColiidcHy (7) PsUtacidw. 
Order VII. Raptores. Sample families: (1) NociurneSy (2) 
Biurnes, 
The order Cursores, which was formerly adopted by the 
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