Introduction to Anivial Morphology. 417 



three last joints dilated ; tortoise-like beetles, which, when 

 caught, feign death. 29. Silphid» : Carrion beetles — antennae 

 clubbed ; ligula bilobed ; abdomen of six free moveable seg- 

 ments ; anterior and middle legs with conical basal joints. Lep- 

 toderus from the Adelsberg cave is eyeless. 30. Scaphididae — 

 small, fungicolous ; antennae with a clubbed or capillary end ; 

 basal joint of fore-limb cylindrical ; abdomen with a conical 

 point. 3 1 . Phalacridae — small, oval, convex, with a small fourth 

 tarsal joint; abdomen with five free rings. 32. Nitidularidae — 

 small, with antennae clavate ; legs short ; male tarsi often 

 heteromerous. 33. Colydidse — antennae clubbed, tarsus four- 

 jointed ; the last or last pair of the five ventral rings alone 

 are moveable ; the body has a sculptured surface. 34. Cucuji- 

 das — body compressed, with moniliform (Cucujus), or clavate 

 (Silvanus), or thread-like antennae (Brontes) ; all the five 

 ventral rings free. 35. Cryptophagidae — antennae with a 

 1-3-jointed terminal club ; tarsi five- (Cryptophagus), rarely 

 three- or four-jointed ( Mycetophagus). 36. Dermestidae — 

 antennae short, retractile; a single frontal eye. Anthrenus 

 museorum is the pest of entomological cabinets. The 

 larva of Dermestes lardarius is the bacon grub. 37. Byrr- 

 hidae — oval ; tibia folds into the femur like a penknife. 

 38. Parnidae — antennae clubbed, with retractile head ; aquatic, 

 but without swimming feet, and with a silky clothing, and a 

 varnish-like coating. 39. Scarabaeidse (Lamellicornes) — 

 antennae short, the first joint large, the last three, or more, 

 forming a lamellated club ; eyes lateral. Dynastes has the 

 clypeus united to the forehead, and the mandibles un- 

 covered (sheathed in Cetoniae, &c.) Melolontha, the 

 cockchafer, is found on the leaves of sycamore, and other 

 trees, to which it is very destructive. Ateuchus sacer was 

 the sacred Scarabaeus of the Egyptians. Geotrupes is the 

 dung beetle. Lucanus and its allies have comb-shaped an- 

 tennae. 40. Buprestidae — bright-coloured, long, flat beetles, 

 with serrated antennae ; short legs ; eyeless larvae ; caeca are ap- 

 pended to the stomach or proventricle, and often to the 

 oesophagus (Anthaxia). 41. Eucnemidae — cylindrical, with 

 retractile antennae, globular femora on the fore and middle 

 pairs of legs ; labrum indistinct. 42. Elateridae — long, de- 



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