434 



COLEOPTERA. 



Fig. 374. 



weeks, and the pupa lives half that time ; the beetles often 

 hibernate. The larva has the general form of that of Poecilus. 

 The species of Harjxdus are large, 

 with a very square prothorax. H. 

 caliginosus Say (Fig. 374) is bene- 

 ficial in eating cut-Avorms and other 

 injurious larvae. Fig. 375 represents 

 a larva supposed to belong to this or ^ 

 an allied g-enus "" ' ^ 



The blind Anoph- 

 thalmus Tellkampfii Erichs. from the 

 Mammoth Cave, has no eyes, while 

 the legs are ver}^ long, especiallj' 

 the narrow fore tibise ; but in Tre- 

 chus, which is closely allied to the blind Cave Beetle, 

 the eyes are as large as usual, and the legs stouter. Fig. 375. 



Bembidium com- 

 prises species of 

 very small size 

 and variable in 

 form, in which the 

 anterior tibiae are 

 not dilated at the 

 base. They are found abundant^ under the refuse of 

 freshets and tides, preying upon dead animal matter 

 and other insects, and a species of CiUenum, 

 closely allied to Bembidium, is known to seize 

 the beach-flea, Gammarus, and devour it. 

 Fig. 376 (A, a little enlarged ; B, head ; c, 

 mandible ; e, antenna ; /, labium and its two- 

 jointed palpi ; g, maxillae ; h, i, j, under side 

 of different abdominal rings) represents the 

 larva of a Ground beetle, which, according to 

 377- Walsh, preys upon the larva of the Plum cur- 

 culio while under ground. Fig. 377 represents the Fig. 378. 

 supposed larva of a European species of Chkenius, and Fig. 

 378 what we suppose is the larva of a beetle allied to Cillenum. 



Amphizoidje Leconte. The genus Ampliizoa (Fig. 379, A. 

 insolens ; a, antenna ; 6, labrum ; c, mandibles ; d, maxilla ; e, 



