of the Australian Lamellicorn Genus Cryptodus. 7 



the apex of the elytra irregularly and obscurely punctured. The 

 scutellum is semi-oval and scarcely punctured. The body beneath 

 is opake, with a few minute setigerous punctures. The fore tarsi, 

 in the few specimens I have examined, are simple. The proster- 

 num is dilated at its anterior margin ; its hind part is, however, in 

 no manner prominent. 



DESCRIPTION OF THE FIGURES. 

 PLATE I. 



(See descriptions of the species for their natural size.) 



Fig. 1. Cryptodus variolosus {paradoiusl), magmfieA. 

 \a, extremity of the abdomen ; \h, mentutn. 



2. Cryptodus piceus, magnified. 



2a, antenna ; '2h, mentum, showing the tips of the labial palpi ; 2c, ex- 

 tremity of abdomen. 



3. Cryptodus Tasmanniaiius, magnified, 



4. Cryptodus politus, natural size. 



4a, antenna ; 4h, mentum ; 4c, last joint of anterior tarsus, and its 

 ungues. 



5. Cryptodus Passaloides, magnified. 



5a, antenna ; 3ft, mentum seen from beneath ; 3e, ditto, seen sideways. 



6. Cruptndus caviceps, magnified. 



6a, head seen from beneath ; 66, mandible ; 6c, maxilla seen from 

 above ; 6rf, maxilla seen obliquely ; 6e, mentum seen sideways ; 

 6/'and^. antenna seen in different positions; 6/i, extremity of 

 elytra and abdomen seen sideways; 6i, extremity of abdomen seen 

 from beneath the podex extending beyond the terminal ventral seg- 

 ment. 



