BT WILLIAM MACLEAY, F.L.S., &C. 527 



neai'Iy contiguous. Thorax very transvei'sal, the disk convex, the 

 margins broad, and a little recurved, the sides narrowing much to 

 the apex, and slightly bisinuate, the anterior angles round but 

 prominent, the base slightly bisinuate. Scutellum transversal, 

 rounded behind. Elytra moderately convex with broad flat lateral 

 margins, the disk with 17 rows of distinct punctures on each 

 elytron, the interstices scarcely raised and nearly equal, the fourth 

 and eighth very slightly more raised near the base, also a raised 

 callus near the shoulder and an inequality about the middle close 

 to the margin. The undersurface and legs are piceous bi'own and 

 nitid, the prosternum is rather sharply carinated along the entire 

 length, the spui-s on the extremity of the anterior tibise are short, 

 stout and pointed. 



Length, 9 lines, lat. 6 lines. 



Hah. — Cape York. 



18. PTEROHEL.EUS DaRWINIENSIS, n. Sp. 



Broadly ovate, convex, black, sub-nitid. Head very minutely 

 punctate, flat at the lateral angles, broadly rounded in front, eyes 

 rather distant. Thorax transverse, smooth, narrowly and deeply 

 emarginate in front, receiving the head up to the eyes, the lateral 

 margins moderately broad and thickened on the edges, moderately 

 bisinixate on the base. Elytra rather broader than the thoi'ax, 

 narrowly margined, each elytron faintly costate, the 2nd, 4tli 

 and 6th most conspicuous, the intervals with a double row of 

 punctures. Undersurface and legs nitid, the prosternum flat and 

 roundly prodixced behind, the spur on the anterior tibise rather 

 long and acute, and slightly curved. 



Long. 8 lines, lat. 5^ lines. 



Hah. — Port Darwin. 



This species, though in form and sculpture resembling the 

 insects of this section, shows also in the narrow margins of the 

 elytra a decided affinity to those I place in the 2nd section. 

 34 



V:\ 



