338 Major T. Broun on new 



rather larger smooth spaces occur than amongst the coarser 

 impressions beyond ; the intervening spaces are more or less 

 transverse and very irregular ; when examined in certain 

 ways three lines may be noticed on each elytron — these are 

 not costae, being simply linear spaces which are more or less 

 interrupted or obliterated. 



The legs are, in proportion to the size of the insect, rather 

 slender ; the external apical angles of the front and middle 

 tibiae are but little prolonged ; the antennae are only scantily 

 pubescent. 



Underside nearly smooth, ventral segments foveate at the 

 sides, prosternal process broadly grooved between the coxa?. 



M. costellum, from Stephen's Island, is the only species 

 resembling M. leicisi. The former may be identified by 

 looking at the base of the elytra, where the costfe are obvious ; 

 its eyes are less convex, there is a transverse and rather 

 closely punctured impression just behind them, and a longi- 

 tudinal groove on the middle of the back part of the head ; 

 the sides of the thorax, instead of being nearly straight near 

 the middle, are gradually narrowed from the front, the widest 

 part, and the hind body is move parallel-sided. 



Length 16-17 ; breadth 4f-5£ lines. 



Broken River, Canterbury. 



It is with pleasure that I name this superb species after 

 Mr. J. H. Lewis, who discovered it, and who informed me 

 that his first specimen measured 19 lines in length. 



Mtcodema seriatum, sp. n. 



Elongate, slightly convex, nitid, nigrescent ; legs and an- 

 tennae piceous. 



Head (the very prominent eyes included) as broad as front 

 of thorax, with coarse longitudinal rugae in front of the an- 

 tennal insertion and irregular ones near the sides, the space 

 behind the eyes finely but distinctly punctured and feebly 

 rugose, the middle not smooth. Thorax with setigerous 

 punctures, but not crenulate, at the sides, almost as long as 

 broad, scarcely wider near the middle than elsewhere, slightly 

 rounded towards the front, strongly curved and narrowed 

 behind (the sides at the base, however, are quite straight) ; 

 apex widely incurved, base slightly medially emarginate ; 

 median groove deep but not reaching the base or apex, basal 

 fossa? moderate, situated close to the angles, the disk with 

 moderately fine but quite distinct undulating transverse 

 striae, which on a shallow depression near each anterior angle 

 become coarser and rugose ; they are also similarly rugose, 



