140 



THE ORDER OF COLEOPTERA. 



In the group Cryptoplides, containing the genera Endalus, Brachy- 

 hamus, and Smicronyx, the fourth joint of the tarsi scarcely extends 

 beyond the lobes of the tbird. In the group Ilydronomides, repre- 

 sented in this country by the genus Bagous, Sch., the tarsi differ from 

 the common type of the Curculionida) in being slender, and not spongy 

 beneath, and the third joint not bilobed ; the fonrth 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 : Erirhinns, Sch., 10 species. Undalus, DeCasteln, 4. Brachyba- 

 mus, Sch., 2. Bagous, Sch., 2. 



Sub-family BALANINIDES. 



[Fig. 64. 1 From BaXavoq, a nut or acorn, in which the larvte reside. 



Head 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. Tlie larvte 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 transform. The species 

 Eye. are, for the most part, of medium size, and of a mottled 



brownish color. The sub family is composed of the genus Balaninus, 

 Oermar, of which 8 N. A. species have been described. 



Balandjus— after 



[Fig. 65.] 



Sub-family ANTHONOMIDES. 



Head somewhat conical. Rostrum slen- 

 der and jirojecting 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 

 any very strongly marked characters. 



_,, . . , , r. -1 . Anttionomus, 4-Giriniis, 



Tbey are a very important sub-family, incuicnijo; a, natmai size 



an economic point of view, many of them 



back view, enlarged— after Riley. 



Say: — Apple 

 c. side and 



