150 INSECTS OF THE FLY RIVER, NEW GUINEA, "COLEOPTERA. 



75. Metriorhynchus ephippiger. Guer. 

 Voy. Coquille, p. 73. Boisd., Voy. Astro]., 11, p. 118. 



76. Metriorhynchus immersus. Watevh. 

 Typ. Lye. Brit. Mus., p. 53, PI. XIII., fig. 1. 



77. Metriorhynchus Doleschalli. Red tend. 

 Voy. Novara.. II., p. 101, PI. 3, fig. 12. 



78. Metriorhynchus thoracicus. Fab. 

 Syst. Eleuth., Vol. II.. 37, p. 117. 



79, Metriorhynchus parallelus. Guer. 

 Yoy. Coquille, p. 72. Boisd., Yoy. Astrol., II., 114. 



80. Metriorhynchus tenuis, n. sp. 



Somewhat resembling M. angustulus, VVaterh. Elongate, narrow, 

 parallel-sided, and of a blackish brown colour excepting a reddish 

 patch about the scutellum. The thorax beneath and the base of 

 the thighs yellow. There are six cost* on each elytron with a 

 double row of punctures between each. 



Length, 4Jlines. 



81. Metriorhynchus serricornis. 



Black with a bluish tinge, and opaque. Antennae compressed 

 and serrate. Head completely covered by the thorax. Thorax 

 distinctly 7-areolate, widened at the base and acutely angled, a 

 very narrow basal margin reddish, the base biemarginate, the 

 middle forming an emarginate prominence. Scutellum blackish. 

 Elytra red with the apical fourth bluish-black, there are 10 distinct 

 rows of square punctures on each elytron, every second interstice 

 forming a distinct costa. The thorax is yellow, beneath the abdomen 

 black, the legs are brown with the inner edge of the thighs 

 yellowish. 



Length 4^ lines. 



