185 



fortiter) lobatis, 

 postice obsoletis. 

 Sterni episternis n 

 B. JJelmsi. 



distincte tricarinatis, 

 Long, (rostr. incL), 6 1. 

 aculis (lenudatis binis 



carinis antice ct 

 ; lat, l-r^,,- 1. 

 oniatis, cetei'a ut 



Tliis insect is extremely close to B. IJehnsi and B. Insoii, but 

 is certainly a good species. From B. llelriui it is at once dis- 

 tinguishable by tlie base of the elytra being very much less 

 strongly lobed forward and the third and fourth joints of its 

 antennsB being equal or nearly so ; from bison by the absence of 

 any elytra! protuberance behind the scutellum, and from both by 

 the three well-defined carinre on each of its elytra. These carina' 

 terminate at the point where the elytra begin to narrow to the 

 apex ; that nearest the suture begins at a distance from the base 

 about equal to a (juarter of the length of the elytra, and the 

 others at successively increasing distances from the base ; the 

 intervals between them are not distinctly concave, but there is a 

 wide fiat space on either side of the suture limited by the first of 

 the carinre. The innermost carina on each elytron is almost 

 exactly like the corresponding carina on the elytra of B. hiden- 

 taliis, but is more distant from the suture. The pro thorax of 

 almost exactly the same shape (but a little less transverse), at 

 any rate in the male, as that of B. bidentaius is a good character. 

 r have examples from Western Australia of a Belus which I 

 cannot sejDarate from this by any definite character, although it 

 has a very difierent appearance owing to the squamosity of its 

 surface being grey rather than white, and being vei'y much more 

 plentiful, almost covering the surface. 



Interior of S. Australia ; basin of Lake Eyre. 



-"■ Flindersi, sp. nov. (Mas.) B. llelmsi afiinis ; piceo-niger, 



rostro autennis pedibusque paullo rufescentibus ; prothorace 



minus crasse magis concinne granulato (fere ut B. scalaris, 



trerm., sed granulis nonnihil ma,joribus), quam longiori fere 



tertia parte latiori, canali mediano albo-squamoso nisi ad 



basin carente, basi media minus fortiter lobata ; elytris ad 



basin paullo minus fortiter lobatis, antice magis crebre 



magis subtiliter granulosis postice magis crebre punctulatis ; 



abdomine toto et metasterno maculis denudatis ornatis nee 



ad latera vitta pilosa continua instruotis ; femoribus anticis 



dentibus binis parvis armatis, posticis segmenti ventralis 



basalis apicem vix superantibus ; cetera ut B. llelmsi. 



Long, (rostr. inch), Q] 1.; lat., I4 1. 



xne greatest width is immediately behind the base of the 



« ytra, whence the outline is slightly incurved, the width near 



le apex being not much less than in front ; in the species of 



tSe.us having an outline of this kind the posterior dilatation is 



