Eee 
i 
ZOOLOGY. 435 
We have in this instance another striking exemplification of the 
danger of hastily laying down rules from isolated facts. The real 
fact is, so far as we now know, there are as many species belonging 
to the genus Antrostomus that lay white unspotted eggs as there 
are that have colored ones. The eggs of Nuttall’s whippoorwill 
were first obtained by Mr. Robert Ridgway, who met with them, 
July 20, 1868, among the East Humboldt Mountains, and the 
unspotted character of their eggs has for some time been a well 
known and undisputed fact. 
But this is not the first instance of the discovery of an unspotted 
egg of an Antrostomus. In the third volume of the first series of 
the Ibis, page 64, Mr. Salvin mentions taking, April 20, 1860, on 
the mountains of Santa Barbara, in Central America, a species of 
Antrostomus with two white eggs. Mr. Salvim has since informed 
me that the parent of these white eggs has been ascertained to be 
A. macromystax of Wagler. 
So far aè we now know two of this genus, Pee Palela y and vocif- 
erus, have eggs with purple marbling on a white ground, and two 
have purely white eggs. Occasionally the eggs of vociferus are 
most immaculate. It is quite possible that the other southern 
forms of Antrostomus will be found to have unspotted white eggs 
and that the markings of the more northern species 8 are the excep- 
tions and not the rule.— T. M. Brewer. 
More Monsters.— The account of a double pig in the June 
number of the Natvrazist (page 567) leads me to say that there 
are now in my possession awaiting examination the following 
malformations. 
1. A double pig, apparently identical with that above referred 
to; the brains are perfectly preserved. 
A pig more nearly double, the two individuals being joined 
only by the thorax. 
- A child with two heads, three legs and a rudimentary third 
arm ; ; of this the viscera including the two brains are prese 
4. Four calves with two heads each; from two of these the 
~ brains are preserved. 
5. A cock and a hen full grown, and possessing four legs each. 
6. A young chick with one leg. 
T. A foetal pig with seven toes on each manus and six on each 
pes, 
