125 



puQctulatis), humeris paruQi prominentibus. Long., 3^ 1.; 

 lat., i 1. 



This species forms with the preceding a small group that difiers^ 

 from the piceus group by its evidently more, — ami from the 

 fossus group by its evidently less, — strongly punctulate pro- 

 notum. It differs from all the other Dereta'phri known to me by 

 the front part of the lateral outline of its prothorax forming a 

 regular curve which passes into the posterior sinuation evident^" 

 further back (i.e. nearer the base) than in the other species. 



S. Australia (Adelaide district). 



B. cordicollis, sp. nov. Elongatus ; sat angustus ; minus nitidus ;. 

 piceus, femoribus magis rufescentibus ; capite longitudinal- 

 iter leviter impresso, crebrius mious subtiliter punctulato ;. 

 prothorace quam latiori parum longiori, supra sat crebre 

 ^at fortiter (quam B. fossi, Newm., vix minus fortiter) 

 punctulato, prof unde canaliculato (canali basin fere apicem 

 sat prope attingenti, circiter medium interrupt©, parte antica 

 magna minus concinne definita), ad quasi-apicem quam ad 

 mediam partem sat latiori, lateribus a quasi-apice ad medium 

 leviter arcuatis hinc ad basin valde sinuatis, angulis quasi- 

 anticis bene determinatis fere subacutis posticis leviter 

 obtusis sed ad apicem summum sat fortiter dentiformibus, 

 carinse lateralis apice a segmonti margine antico minus late 

 (oculi diametri circiter dimidio) distanti, parte basali utrinque 

 late leviter impressa ; elytris punctulato-striatis, interstitiis 

 alternis (3° in parte media magis obtuso excepto) carini- 

 formibus alternis (6" in parte subapicali cariniformi excepto) 

 vix convexis (omnibus perspicue punctulatis), humeris 

 modice prominentibus. Long., 5f 1.; lat., 1 1. 



The close and comparatively strong puncturation of its pro- 

 notum associates this insect with the fossus group of species. 

 From the species which I have indicated above as being in my 

 opinion fossus the present one differs inter alia (a) in respect of 

 its pronotum by the much more sharply defined quasi-front 

 angles (a character which separates it also from all the other 

 hitherto described Deretaphri known to me) the much larger and 

 deeper front part of the longitudinal channel (which however is 

 of the same foveiform character as in fossus), the evidently 

 (though not very much) finer puncturation, the stronger lateral 

 sinuation, the considerably more strongly dentiform apex of the 

 hind angles, the much nearer approach of the lateral carina to 

 the front margin of the segment ; (b) in respect of its elytra by 

 the third interstice being in the middle part of its length obtusely 

 convex rather than cariniform, by the sixth interstice being 

 cariniform only in a short space a little behind the middle, by 



