35 
river Seena, near Waterphul, as late as 24th May, and was told that 
one had been brought into the cantonments of Ahmednuggur as late 
as 12th June, but I never heard of any remaining to breed. It 
would be most interesting to find out their breeding haunts, their 
manner of nesting, and the number and colour of their eggs. The 
greater portion leave the Deccan at the end of March or beginning 
of April, and return at the end of November. They feed in the 
grain fields, retiring to the larger rivers about ten o’clock, where they 
may be seen standing in large flocks in the shallows. 
Genus ARDEA. 
Subgenus ARDEA. 
ARDEA CINEREA (Lath.). Common Herron. 
A tolerably common bird in the Deccan, frequenting tanks and 
rivers. I found two nests in a tall peepul tree on the 27th February ; 
one contained the egg sent with this paper, the other was a nest just 
finished, and contained no eggs. This bird is considered, I believe, 
to be identical with the English Heron; it most probably therefore 
lays four or five eggs, as Mr. Yarrell states that the English Heron 
does. The egg is a uniform sea-green colour, 2,4;ths in. in length, 
by 1 inch and rather more than ;3,ths in width. 
2. An ARRANGEMENT OF THE FAMILIES OF ECHINIDA, WITH 
DerscripTions oF somME New GENERA AND SPECIES. 
By Dr. Joun Epwarp Gray, F.R.S., V.P.Z.S., P.B.S. etc. 
MM. Agassiz and Desor have given the generic characters and a 
list of the species of Echinida, but do not divide the genera of the 
normal division into families. I propose to divide them into the 
following groups. 
The Echinida acrocystos, or those which have a vertical dorsal 
vent, a regular globular body, with an inferior central circular mouth, 
armed with conical jaws, furnished with five elongate acute teeth, and 
with the ambulacra forming continuous vertical bands from the mouth 
to the vent. They may be divided into the following families. 
I. Tubercles of spines perforated ; spines elongate ; body circular. 
Fam. 1. Ciparip&. 
Ambulacra narrow, formed of double pores; interambulacral 
plates few, with a single large tubercle ; spines thick, solid. 
1. Cidaris. Tessera even-topped. 
2. Goniocidaris. 'Tessera bevelled on the edge.—G. pistillaris. 
Fam. 2. DiapEMAD. 
Ambulacra narrow, of one series of double pores; interambulacral 
plates numerous, with two or more rows of tubercles; spines slender, 
often tubular. 
