302 



sexes are eacli tipped with a conspicuous comb-like fringe of 

 setae, as they are on most species of the genus. 



Otiorhynchus crihricollis, Gyll. Black Rocks. 



Mandalotus tenuicornis, Lea. Black Bocks. 



M. ventralis, Blackb. Flinders Island. 



Perperus languidus, Er. Flinders Island. 



Zephryne, sp. One specimen of a species evidently near 

 Z. geometrica was obtained on Franklin Island; but as the 

 colours of species of the genus vary considerably, it is not 

 desirable to name an unique. 



Desiantha maculata, Blackb. St. Francis Island. 



Eloeagna squamihvnda, Pasc. St. Francis and Franklin 

 Islands. 



Halorhynchus caecus, WoU. Two specimens of this 

 curious little blind species were taken on Flinders Island; 

 it was named originally from Western Australia, but has 

 been taken on Kangaroo Island and on beaches near Adelaide. 



Pentarthrocis, n gen. 



Head rather small. Eyes very small, composed of a 

 few coarse facets. Rostrum moderately long, slightly in- 

 curved between base and insertion of antennae, in front of 

 antennae slightly wider and parallel-sided. Antennae rather 

 short; funicle the length of scape, first joint slightly longer 

 than second and third combined, third shortest of all; club 

 indistinctly jointed. Prothorax rather elongate, sides gently 

 rounded, base wider than apex. Scutellum invisible. Elytra 

 elongate, with rows of large punctures in re§;ular striae. Meta- 

 sternum elongate. Abdomen with third and fourth segments 

 very short, the others large. Legs rather stout; front tibiae 

 with small subapical spur, and large terminal hook; tarsi 

 with third joint moderately dilated, the claw joint rather long 

 and thin. 



Of the Australian genera with the funicle five- join ted 

 the present genus is distinguished from Cossonideus by the 

 small eyes; Halorhynchvs is blind; Pentamimus and 

 Pentarthrum have much shorter rostrum with much larger 

 eyes ; Conlonia has thinner rostrum, more parallel-sided body, 

 and seriate arrangement of the elytral punctures (themselves 

 much smaller) scarcely in evidence; and Microcossanus has 

 much larger eyes, scutellum conspicuous, etc. In catalogues 

 it should be placed near Pentarthrum. The only known 

 species has somewhat fusiform outlines, and straggling hairs 

 on the sides; its rostrum has a slight resemblance to that of 

 some species of Cossonus. 



