621 



specimens from Southern Queensland, and believe the locality 

 Tasmania to have been given in error. 



MlCROTRAGUS QUADRIMACULATUS, Blackb. 



A specimen from the Coen River (Queensland) agrees 

 with the description of this species; it resembles the preceding 

 species, but differs in being very much smaller, with the rows 

 of tubercles continued to much nearer the apex of elytra, tiie 

 prothorax less coarsely sculptured on the disc, and the elytra 

 with four large pale spots ; as the apical joint of each palpus 

 is rather thin the specimen is probably a female. 



Microtragus senex, White. 

 Var. J/, 'functus, Blackb. 



M. maculatus, Blackb. 



M. albidus, Blackb. 

 Of twenty-nine specimens before me the elytral markings 

 are not exactly the same on any two, and they are not 

 exactly the same on the two sides of any individual ; but there 

 is frequently (in addition to other markings) a large black 

 blotch on each side near the base, and an irregular one on 

 the suture posteriorly, and such specimens agree well with the 

 figure of the type ; but occasionally the markings are extended 

 over most of the surface, and are but brown and black, 

 instead of white, brown, and black. It varies greatly in size 

 also (10-20 mm.). On the male the apical joint of each palpus 

 is distinctly wider than on the female, but it is not triangu- 

 larly dilated as on the males of luctuosus and mormon; the 

 sexes, however, may be readily distinguished by the hind 

 coxae, on the male (only) each of these at its inner angle has 

 a short upright tubercle, usually rather compressed and 

 sharply pointed, but occasionally shorter and subcorneal. 



Junctus appears to be a variety of senex, having a some- 

 what narrower body, markings more diffused and elytra with 

 longer and more sinuous costae ; although described as having 

 the costae joined posteriorly (and named junctus) a specimen 

 labelled by Blackburn as junctus certainly h&s not the costae 

 joined posteriorly, although they are fairly close to each other 

 at their tips. The type of maculatus appears also to have 

 been one of the many varieties of senex, it is now in the 

 British Museum, but the specimen identified as maculatus- 

 from the Elder Expedition is before me, and belongs to senex: 

 the costae on the elytra are rather more pronounced and more 

 sinuous than on the western forms, but there are connecting- 

 specimens before me. Structurally two specimens labelled by 



