AYES. 
48 
( . The variation in colour, as in other species of the genus, depends on the 
age of the female parent. / 
Hutton, F. W. On the Nests and Eggs of some species of New- 
Zealand Birds not previously described. Tr. N.-Z. Inst, 
iii. pp. Ill, 112. 
('The species noticed are Creadion canmculaiits, HctUus pectoraliSf Majaqueus 
2^arkmso7ii, Gt'aculm mrius, and Sula set'rator, } 
^ATHusius, W. VON. Die Structur des Vogel-Eies und deren 
Beziehungen zur Systematik. J. f. O. 1871, pp. 241-260. 
('In continuation of papers before noticed (Zool. Rec. vi. p. 67). The author 
considers that some natural families of birds are marked by certain well- 
defined characters of the egg-shell, and that by the structure of this alone a 
species can be unfailingly referred to these groups. / 
/ . Ueber die Eischalen von JEpyorniSj Binm'niSj Apteryx 
und einigen Crypturiden, Z. wiss. Zool. 1871, pp. 330-355, 
pis. XXV., XX vi. 
TThe structure of the egg-shell confirms the place of JEpyornis and Dinorms 
[cf. Zool. Bee. vi, p. 67] among the Stt'uthiones, and the affinity of Apieiyx 
to the Tincmidee and certain Qrallce^ the last two being also allied by the 
same character, which serves to separate them from the normal Gidlince, j 
/Newton, Alfued. On some New or Hare Birds^ Eggs. P. Z. 
S. 1871, pp. 55-58, pi. iv. 
( The eggs of Theristicus melanopis^ Calidris armm'ia [cf. etiam tenivcit. pp. 
646, 647], Ntmienius horealisj N. hudsonicus, Chionis inmor, Xema sabmu, 
Ckroicocejyhalus Philadelphia j Larus fi'anklmi are figured, and those of Letico- 
jslicte yriseinucha, 3£acro7'hampkus griseus, Actodromas bcih'dif Clangula alheola^ 
Somatei'ia v-nigtnimy and Chen hypei'ho7'eus described./ 
/ Potts, T. II . On tlie Birds of New Zealand. — Part II. Tr. 
N. Z. Inst. iii. pp. 59-109, pis. vi.-xii. 
^ In continuation of a former paper (Zool. Bee. vii. p. 38)^ giving an account 
of the breeding-habits of 30 species, the nests of several being figured,^ 
, , . Notes on an Egg of Alca impenniSj Linn., in the collection 
of the writep. Id. tom. cit. pp. 109, 110, 
^ Bey, E. Ueber Kuckukseier. J. f. 0. 1871, pp. 225-228. 
( A list giving details of 66 eggs of Cucidus canorus, with reference to the 
theory of assimilation/ 
^ Jugendkleider und Eier einiger Vogel aus Klein- Asien. 
Tom. cit, pp. 459-462. 
(Pggs of Sitta hnieperif Ficus synacus, Oxylophus glandarniSj Gdn'idus me- 
lanocephalus are described, j 
/Waiilgren, E. Ein Ei im Eie. J. f. 0. 1871, pp. 260-265. 
\ Describes three kinds of this anomaly^ 
