Australian and Tasmanian 3£alacodermidae. 68 



absent ; both also have the base of the elytra not entirely 

 black. But Macleay says "the middle one (of the 

 prothoracic areolets) confined to the basal half, the others 

 not very perfectly defined. The elytra are strongly 

 quadricostate and punctured." The only specimen these 

 remarks refer to has the four front areolets feebly defined 

 and the elytra with strong punctures in single series, 

 which, however, become confused towards the apex.* The 

 other specimen has the prothoracic areolets very well 

 defined, the elytral costae unusually feeble and separating 

 two distinct rows of punctures ; the species is here described 

 under the name of costicollis. 



The female of testaceicollu f differs from the male in 

 having the prothorax more transverse with the antennae 

 shorter, stouter and strongly serrate only. It agrees very 

 well (except that the specimens before me are three instead 

 of four lines in length) with the description of Xylohanus 

 miniaticollis, but I do not think that the types of that 

 species can have been females of testaceicollis, otherwise 

 I should probably have noticed it when examining the 

 types. 



The species tabulated below are practically identical in 

 colour : — 



Subsutural costa trifurcate near base. . T. atripennis, Macl. 

 Subsutural costa simple. 



Elytral punctures in single series. 



Antennae of male strongly branched. M. tedaceicollis, Macl. 

 Antennae of male not branched . 31. diminutivus, n. sp. 

 Elytral punctures in double series. 



Prothorax 7-areolate .... M. costicollis, n. sp. 

 Prothorax 3-areolate . . . . M. atricornis, n. sp. 



ITab. Queensland : Cairns. 



Metriorrhynchus posticalis, Macl. {Cladophorus), I. c, 

 p. 234, fig. 81. 



In the type the scutellurn is pallid as well as the pro- 

 thorax and portion of the elytra. 



Hob. Queensland : Cairns, Barron River. 



* On the elytra of several other specimens, as well as on the type, 

 double rows can be traced towards the apex and to a less extent near 

 the base. 



t The specimens here described were amongst the Macleay 

 Museum duplicates. 



