BY REV. T. BLACKBURN. 513 



B. MANDIBULARE, sp.HOV. 



Mas C?). Breve; subrotundatum; sat nitidam; supra glabrum; 

 subtus hirsutum; rufobrunneum ; mandibulo sinistro (superne 

 viso) extus fortiter siimato; capite (parte postica excepta) sat 

 crebre subrugulose minus subtiliter punctulato, fronte concava 

 postice minus crebre punctulata ; eminentia clypeali in medio 

 tuberculum ferenti, ab hoc utrinque ut carina retrorsum oblique 

 ad margiuem frontalem continua ; carinis qupe areas clypeales 

 dividunt ab tuberculo frontali ad ctypei marginis anterioris 

 extremitates continuis; marginibus frontalibus ante alas frontales 

 brevibus (quam alse multo brevioribus) alarum frontalium angulis 

 extero-anticis rotundatis; eminentia frontali ut carina brevis 

 transversa (hac leviter retrorsum arcuata, ad extremitates vix 

 prominent!) sat fortiter elevata; capitis margine modice perspicuo, 

 oculum medium vix attingenti; oculis perlsevibus; prothorace 

 fortiter transverso, supra acervatim sat grosse punctulato, pone 

 marginem anticum fovea magna ovali vel subcirculari impressa, 

 pone medium longitudinaliter sulcato, partium impressarum fundo 

 sat fortiter punctulato, pronoti puncturis latera versus sat crebris 

 (hinc versus partem medianam et prope basin minus numerosis); 

 scutello subtilius sat crebre sat sequaliter punctulato; elytris sat 

 fortiter 15-punctulato-striatis, striis 14^ 15^ que baud inter se 

 confluentibus, interstitiis parum convexis; tibiis posticis supra 

 carinam 2^"^ baud transversim carinatis, anticis extus 6-dentatis; 

 femoribus posticis subtus crebre sequaliter minus subtiliter 

 punctulatis. 



Feminse (?) fronte minus concava, creberrime sat aequaliter 

 punctulata. Long. 5, lat. 3 lines. 



This species, although comparatively large in the Third Group, 

 is much sm.aller than any species known to me of the First or 

 Second Groups. Tt differs from all the other species known to me 

 (of the same group) by its left mandible (viewed from above) hav 

 ing an extremely strong external sinuation. It is the only species 

 of the group that I know to occur in New South Wales, whence 

 four specimens were sent to me by Mr. T. G. Sloane, and I have 



