140 
THE ORDER OF COLEOPTERA. 
1 
In the group Cryptoplides, containing the genera Endalus , Brachy- 
baums, and Smicronyx, the fourth joint of the tarsi scarcely extends 
beyond the lobes of the third. In the group Hydronomides, repre- 
sented in this country by the genus Bayous, Sell., the tarsi differ from 
the common type of the Curcnlionidse in being slender, and not spongy 
beneath, and the third joint not bilobed ; the fourth joint is elongated. 
The species of this group are found on aquatic plants, and their bodies 
are covered with minute scales which shed the water. 
The species of this sub-family are all small, ranging from a quarter 
to a tenth of an inch in length. The described N. A. species are as fol- 
lows : j Erirhmus, Sch., 10 species. Endalus , DeCasteln, 4. Brachyba- 
mus, Sch., 2. Bagous, Sch., 2. 
Sab-family BALANDODES. 
(Fig. 64. i From Balavoq, a nut or acorn, in which the larvae reside. 
f llead globular. Rostrum very long, slender and filiform. 
Scrobes linear, commencing a little beyond the middle of 
rostrum and reaching the base. Antennae slender. Eyes 
large. End of abdomen slightly exposed. Distinguished 
at once by their long, slender rostrum, almost as fine and 
glossy as a hair. The larvae inhabit nuts and fruit, and 
sometimes the galls made by other insects. The female 
pierces a hole with her rostrum for the deposition of her 
eggs. They enter the ground to ti'ansform. The species 
Rye are, for the most part, of medium size, and of a mottled 
brownish color. The sub family is composed of the genus Balaninus, 
Gerinar, of which 8 N. A. species have been described. 
Sub-family ANTHONOHIDES. 
[Fig. 05.) 
Dead somewhat conical. Rostrum slen- 
der and projecting forwards, and varying 
in length in different species, and some- 
times in the two sexes of the same. Scrobes 
linear, commencing near the middle of the 
rostrum and reaching the base. Eyes ap- 
proximate above. End of abdomen little 
or not at all exposed. These are small, 
somewhat pear-shaped curculio, without 
anv very strongly marked characters. , 
■' J •' . Anthonomus, 4-oibbus, Say:— Apple 
They are a very important sub-family, m curouiio; a, natural size ; &, c. side ami 
J : . .. back view, enlarged— after lUley. 
an economic point of view, many of them 
