362 ON THE CARENIDES (FAM. CARABID^), No. IV., 



channel narrow on sides, tripunctate; basal area defined by a 

 strong curved transverse line; a well marked rotund ate foveiform 

 impression at each basal sinuosity ; median line strongly 

 impressed. Elytra truncate-oval (8 x 4 -3 mm.), narrowed to 

 base, roundly and abruptly declivous on sides, deeply and 

 abruptly declivous at apex; suture deeply impressed; humeral 

 angles upturned in a strong short obtuse prominence; border 

 reflexed; margin wide on apical curve; four punctures on base of 

 each elytron near humeral angle; a closely placed row of punctures 

 along margin; anterior discoidal puncture near basal fourth, about 

 equidistant between humeral angle and second puncture, two 

 posterior punctures not far apart near apical third; inflexed 

 margin wide, narrowed posteriorly, vertical at apex. Length 

 15-5, breadth 4-3 mm. 



Hab. — North-West Australia, between Port Darwin and the 

 Lennard River (Coll. French). 



The only previously described species to which L. humeralis 

 seems closely allied is Carenum multiimpressum, Casteln., with 

 the description of which it agrees generally, except in regard to 

 the large punctures of the disc of the elytra. Castelnau, in his 

 description of the elytra of C. multiimpressum, says, " they 

 present on the middle of their breadth a longitudinal series of 

 five large and very deep rounded impressions; these impressions 

 do not appear to be very regular, my specimen having on one of 

 its elytra two other similar on the posterior part, placed between 

 these and the sutura." It is possible that C. multiimpressum 

 may be a species that is variable in this respect, but, till this is 

 found to be the case, it has seemed to me better to assign a new 

 name to the present species rather than to place it under C. multi- 

 impressum, from the description of which it certainly differs, at 

 least, in the discoidal punctures of the elytra. Tn addition to the 

 large discoidal fovea? of the elytra, there are, in the specimen 

 before me, seven rows of fine punctures which seem a post mortem 

 effect often found in naturally smooth Carenums that have been 

 immersed in alcohol for a lengthened period. 



