122 M. L. Peringuei/s Fourth Contribution [March. 30, 



Tribe : MOLURID^E. 

 Gen. Idricus. Fairm. 



T. pacificus. 



Ovatus, niger, terrenus ; capite piano, vertice longitudinaliter 

 impresso ; prothorace utrinque dilatato, in disco tuberculo valido 

 munito ; elytris ovatis, convexis, sutura anguste elevata, tuberculisque 

 ohtusis, tri-seriatis in singulo instructis. 



Long. 10, lat. 6 mm . 



Black, covered with a brown dust ; head plane with a transverse 

 impression between the point of insertion of the antennse, and a 

 vertical, triangular depression, closely punctured ; prothorax with the 

 outer sides from the apex to about the middle produced in a blunt 

 triangle with the edges slightly raised, narrowed in the posterior part 

 plane in the upper part, with a conspicuous tubercle in the centre of 

 the disk ; elytra very convex, ovate, very rugose, with the suture 

 slightly raised and smooth, and with three series on each side of obtuse 

 tubercle, the third series from the suture forming the outer margin, 

 the epipleurge are very rugose ; underside, and legs closely punctured. 



Larger than T. diabolicus, Fairm.,* and without the two erect 

 spines on the anterior margin of the head, the prothorax is shaped 

 alike, but has only one single tubercle in the disk, instead of four, and 

 the seriated tubercles of the elytra are short and blunt, instead of 

 being long and sharp as in diaboli cus. 



Bechuanaland. 



Gen. Trachynottjs. Latr. 



T. Lightfooti. 



Oblongus, niger, pilis decumbentibus sericeis tectus ; prothorace 

 transverso, lateribus valde angulatis ; elytris oblengo-ovatis, sub- 

 deplanatis, postice acumi?iatis, disco margineque laterali spi?iis acutis 

 . seriatis in singulo armatis. 

 Long. 11 -#8, lat. 4-6 mm . 



Oblong, black, covered with short decumbeut silky greyish hairs, 



.and also with a white tomentum leaving tw© rouud denuded spots on 



each elytron, the postical one the largest of the two ; head punctu- 



* Transactions South African Philosophical Society, 1888, p. 199, pi. 3, tig. 3 



