290 Capt. T. Broun on new 



appearing when examined sideways to consist of rows of 

 rather small punctures, which, however, do not form well- 

 marked striee ; there are many small indefinite elevations as 

 well ; the third interstices, on the top of the hind slope, are 

 rather broad and very slightly raised, and the sides of the 

 summit are somewhat prominent ; two or three strias can be 

 seen there. Tihice straight, with paler and finer set^e than 

 the body. Antennce with outstanding slender setse ; the last 

 three joints, however, are more densely and finely clothed ; 

 the first joint is but little exposed above, second transverse, 

 third not as long as the following three, fourth and fifth 

 short, almost transverse, sixth rather smaller than the con- 

 tiguous ones, ninth and tenth obconical, obviously larger than 

 the preceding ones, eleventh largest, not acuminate. 



Underside piceous, with short yellow setge. Abdomen in- 

 distinctly sculptured. Pleurae much inflexed, broad, with two 

 series of punctures, the row nearest the body consists of fewer 

 punctures (and finer) than the other. The fi-ont coxce are 

 placed near the hind margin of the prosternum, so that the 

 frontal portion seems elongate ; it has some shallow coarse 

 punctures and is only very slightly incurved in front. 



In E. opacus the pleura? are punctured all over. 



In the genus Periatrum the eyes extend below the sides of 

 the head ; in Edalus they do not, they are, in fact, quite 

 small. In Mesopati-iim the eyes extend downwards below the 

 sides of the head and are then directed a little forwards. 



Length 2^, breadth 1 line. 



Ohaupo, Waikato. Three, December 1892. 



Group (Edemeridag. 



Sessim'a thoracica, sp. n. 



Shining, testaceous, very pale; the outer half of each 

 elytron fuscous ; this dark streak does not, however, reach 

 the lateral margin ; head and thorax glabrous, elytra densely 

 covered with pale depressed hairs. 



Head very much narrowed and depressed behind, its punc- 

 tuation fine and shallow. Tliorax about one fourth lona-er 

 than broad, feebly incurved medially at the apex ; its frontal 

 portion (nearly half the whole length) is as broad as the head 

 (including the large eyes), and is rounded laterally ; the hind 

 part has nearly straight sides, and appears as if it were 

 abruptly contracted to about half the width of the other ; the 

 thickened basal margin is curved towards the sides ; the 

 surface is uneven, being broadly depressed at each side of the 



