BY W. MACLEAY, ESQ., F.L.S. 123 



suture and two vittEe, — the first near the suture, the other about 

 an equal distance outside of the first, neither reaching the base, 

 but joining together towards the apex, and forming a very large 

 patch, — of a deep black. A light short stria extends from the 

 base to about the middle in the line of the vitta nearest the 

 suture, and in the middle of the second vitta, there is a deep, 

 short, longitudinal impression. 



163. — Hydroporus nebulosus. n. sp. 



Length 1| lines. 

 Much smaller than the last insect, less convex, and more coarsely 

 punctured. The lateral depressions on the head are very shallow. 

 The thorax, which like the head, is of a dull red, is narrowly 

 margined with brown at the base. The elytra are rather pointed 

 at the apex, and have at their base traces of striae, which are, 

 with the exception of the sutural one, very short ; their colour is 

 dark brown, with a sub-basal fascia, a lateral vitta, the apex, a 

 sub-apical narrow zigzag fascia, and a central spot, of a dull red. 

 The legs are pale red, with a narrow band of black on the 

 extremity of each joint of the posterior tarsi. 



164. — Hydroporus mastersii. n. sp. 

 Length Ij lines. 

 Of an elongated oval form, and pale red colour. Head finely 

 punctured with a well marked fovea near the anterior angles. 

 Thorax also finely punctured, broad, short, rounded slightly at 

 the sides, and broader behind than in front, with the anterior 

 angles advanced, the posterior angles square, the base very slightly 

 bisinuated, the central lobe rounded, a deep basal striola curved 

 inward on each side intermediate between the central lobe and 

 the posterior angles, and the basal margin between these striolee 

 of a dark brown. Elytra finely punctured, with a distinct stria 

 on each side of the suture, and the thoracic striola continued on 

 them in a straight line to nearly twice the length of that on the 

 thorax. The colour of the elytra is a deep dark brown, with a 

 very broad zigzag fascia enclosing an elongated brown spot, a 



