106 Dryocampa Riversii. [ ZOE 
hoping for a mate, but in vain. Then I came to a place where 
cocoanut palms had been cut down, and the large butt lengths of 
the stem were lying about on the damp ground. There, I was 
sure, would be hidden a large lot of Cychrus and other beetles that 
love such places; the logs were 16 to 20 inches in diameter, and had 
been cut down long enough to become ripe for beetles, so with high 
anticipations I rolled one of them over, and—nothing! Another, 
with the same result; and, to be brief, not a beetle was to be found in 
all the campo. 
Near by was a low spot with a little pond of stagnant water cov- 
ered with an immature Azolla. Around the water were some green 
grasses; these I swept for beetles, and then snatched them for the 
herbarium. The little beetles were all small, none so large as half 
a grain of wheat, most of them being Coccinellide and Chrysome- 
lians, some of them under the glass lovely in color and of metallic 
sheen; and Halticas, just as lively and energetic as they are usually 
found to be. : 
A short walk brought me to the ocean beach, and it being low 
tide I tramped rapidly homeward upon the hard sand of the shore, 
whereon great numbers of gulls and other sea birds were standing 
to rest their wings, allowing me to get very close before taking 
flight. 
I reached home late and tired. But no one cares if he is tired if 
‘he but brings home full packs of seizures. That evening, too, was 
Saturday night. A happy week in happy, careless Mexico was 
ended. 
CLASSIFICATION OF DRYOCAMPA RIVERSII. 
BY H. H. BEHR. 
In Proc. Cal. Acad., 1889, p. 94, I described a new Bombycide and 
classified it with the Dryocampa type. The insect, which I called 
Riversii in honor of Mr. Rivers, to whom I owe my specimens and 
notes on their biology, is nearly related to concinna Abbott, classified 
by Dr. T. W. Harris as a Notodonta, and since the publication of 
Riversti 1 have been enabled to study and more carefully compare — 
the material and in consequence of these investigations my views as 
to its systematic position have been changed. 
I now think the insect in question the American equivalent of the 
