BY W. MACLEAY, ESQ., F.L.S. 113 



Labium obtuse and corneous at the apex. Palpi long and slender, 

 the second joint of the maxillary longest, the terminal joint of 

 both thickened, and obtuse or truncate at the tip. Mandibles 

 strong and terminating in two very acute arcuated teeth. Labrum 

 short, broad and entire or very slightly bi-emarginated. Antennae 

 long and slender, the first article long and thicker than the 

 others, the second short. Head small, triangular, and slightly 

 narrowed behind. Thorax elongate and narrowed behind with 

 a broad recurved margin. Elytra very slightly convex and of 

 an elongated oval form. Legs long and slender, the first joint 

 of the tarsi very long, fourth short and entire, the first three 

 joints of the anterior tarsi of the male dilated. 



This genus resembles Lestignathus, Erichs., it differs chiefly 

 from it in the very different labium, labrum, and mandibles. 



132. SlAGONTX AMPLIPENNIS. n. Sp. 



Length 7 lines. 

 Black, moderately nitid. Head rather rugosely impressed on 

 each side in front. Thorax rounded at the sides, narrowed 

 behind, reflexed broadly at the posterior angles, rugose at the 

 base with the median line deeply marked, and the basal impres- 

 sions broad. Elytra much broader than the thorax, broadest 

 behind the middle, and strongly striated, with the interstices 

 convex. Tarsi and antennte reddish brown. 



133. — SlAGONTX Masteksii. n. sp. 

 Length 6 lines. 

 This species differs from the preceding in having the head 

 smoother, the thorax more narrow, and in being altogether a 

 smaller and more elongate looking insect. In other respects 

 the two species exactly resemble one another. 



134. — Treghds atriceps. n. sp. 



Length Ij lines. 



Head black, smooth, and deeply impressed on each side in 

 front, with the clypeus, labrum, palpi, and two basal joints of the 



