BY THE REV. T. BLACKBURN. 739 



It should be noted that in this genus (as in many others of the 

 Feronides) the bifid tooth of the mentum does not project forward 

 as an uninterrupted continuation, but is a separate piece divided 

 from the mentum by a perfectly distinct suture and is strongly 

 declivous. This structure may readily be observed with an 

 ordinarily strong lens in many of the larger Feronides (Priono- 

 phor'HS, Notonomus, Sarticits, &c.). In Rhytisternus, Simodon- 

 tios, and others, the tooth of the mentum is more a continuation 

 of the general plane of the surfa.ce. In small species where the 

 tooth of the mentum is strongly declivous it is extremely difficult 

 to see. In the present insect, although it is quite distinct under 

 a compound microscope, I cannot obtain a satisfactory sight of it 

 with a Coddington lens. 



The labrum, too, is very peculiar, the lateral portion on either 

 side being strongly tumid, so that the middle portion appears to 

 be a sulcus. Another noteworthy character consists in the two 

 large strong punctures placed in the front part of the apical 

 ventral segment, — one on either side of, and close to, the middle 

 line. The palpi, too, having their apical joint unusually long and 

 dilated, are peculiar. The basal 3 joints of the antennge are 

 glabrous, the 4th belonging to the pubescent series. 



The small insect for which I propose this name has the facies of 

 Loxandrus. It also somewhat resembles Notoiohilus (Anisodacty- 

 lidce), from which the glabrous 3rd joint of the antennae will at 

 once distinguish it. 



MiCROFERONIA ADELAIDE, Sp.nOV. 



Ovalis ; sat convexa ; nitida ; piceo-nigra, supra iridescens ; 

 labro, mandibulis, antennis (his apicem versus vix infuscatis), 

 palpis, pedibus, et elytrorum sutiira margineque laterali, testaceis ; 

 prothorace leviter transverso, antice quam postice paullo angusti- 

 ori, canaliculato, latitudine majori ante medium posita, margine 

 antico subtruncato, lateribus leviter rotundatis postice hand sinua- 

 tis, angulis posticis subrotundatis, sulco longitudinali elongate 



