434 



COLEOFTERA. 



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 Harpolus are large, 

 with a very square prothorax. //. 

 caliginosus Say (Fig. 374) is bene- 

 ficial in eating out-worms and other 

 injurious larvae. Fig. 375 represents 

 a larva supposed to belong to this or ^ 



an allied genus. The blind Anoph- ^i 1> 



thalmus Tellkampfii Erichs. from the Hj 



Mammoth Cave, has no eyes, while 

 the legs are very long, especially 

 the narrow fore tibiae ; but in Tre- 

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

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



Sembidium 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 abundantly under the refuse of 

 freshets and tides, preying upon dead animal matter 

 and other insects, and a species of Cillenum, 

 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 ; 0, maxillae ; /*, t, J, under side 

 of different abdominal rings) represents the 

 larva of a Ground beetle, which, according to 

 Fig. 377. "Walsh, preys upon the larva of the Plum cur- 

 culio while under ground. Fig. 377 represents the rig. 37s. 

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

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



AMPHIZOID^E Leconte. The genus Amphizoa (Fig. 379, A. 

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



Fig. 376. 





