226 MEMOIBS OF THE QUEENSLAND MUSEUM. 



The outlines, eyes, and punctures of sterna are as described in the preced- 

 inof species, but it is less metallic, the prothorax as well as th? head is shagreened, 

 and the seriate punctures on tlu^ elytra are different; they are small, narrow, 

 and so close together that the elytra might fairly be regarded as striated 

 throughout ; on the sides, however, the stria' are deep and Avell-defined as on 

 most species of the genus. In general appearance it is somewhat like large 

 specimens of D. punctulum, but is more oblong, scutellum narrower and more 

 distinct, prothorax less opaque, althouuh shagreened, and with more distinct 

 punctures, and parts of front legs pale ; these are sometimes entirely flavous, 

 or at least decidedly paler than the others; occasionally the knees are infuscated 

 and som.etimes the femora are entirely dark: on one specimen from Cairns all 

 the tibise are pale. The punctures on the prothorax, although minute, are 

 sufficiently distinct on close examination, but on the head they are almost 

 fnvisible. 



Var. DUBIUS var. nov. 



Some specimens (sexes) are structurally so close to this species that I 



have not ventured to give them more than a varietal name. They differ in being 



slightly more rounded, prothorax with scarcely visible punctures, and polished 



but becoming subopaque on sides ; the legs are all black, or at least very obscure. 



Hah. — New South Wales: Sydney (W. du Boulay and G. E. Bryant); 

 Illawarra (Bryant) ; Hornsby (C. Gibbons), 



DITROPIDUS BREVICOLLIS sp. nov. 

 ^ Black; head, antenna? (club infuscated), palpi, and legs more or less 

 flavous. Glabrous. 



Head subopaque and with scarcely visible punctures, median line very 

 feeble. Eyes close together. Prothorax more than thrice as wide as the median 

 length, sides strongly rounded ; punctures minute. EJjjtra about as long as the 

 basal width ; with rows of distinct punctures, becoming smaller posteriorly, and 

 on the sides set in deep stria?. Length (c?9), 1-75-2 mm. 



$ Differs in being more robust, infuscation of head extended to cover 

 elypeus, elytra less narrowed posteriorly, and abdomen foveate. 



Hah. — North Queensland (Blaekbui-n's collection) ; Cairns district (A. M. 

 Lea). — Type, /. 10866 in South Australian Museum; cotype, C/2322 in Queens- 

 land Museum. 



The eyes are closer together than in any of the preceding small .species; 

 the distance between them in the male is slightly less than the length of the 

 l)asal joint of antennae, in the female it is slightly more. From B. vicarius it 

 differs also in being non-metallic, prothoracic punctures smaller and legs paler: 

 from D. tranquillus in having the head opaque, and la^tcn-al stria' of elytra 

 deeper. The legs are often entirely pale, but frequently the hind femora, and 

 sometimes the middle ones as well, are deeply infuscated. Some specimens, 



