1873] 203 



mesosternuni more vertical, and more clearly and deeply excavated in 

 front, more closely receiving the prosternal process ; intercoxal pro- 

 cess not quite so broad, the apex less broadly truncated, situated on a 

 lower plane than the metasteruum. 



The above differential characters will amply suffice to distinguish 

 this genus from Scaphidema ; and from all the other genera of the 

 sub-family it may be at once distinguished by its broad, truncated 

 intercoxal process. 



S. CEASSICORNIS, sp. It. 



Oval, Bub-depressed, testaceous-red, shining ; antennae, save tlie basal joints, 

 shining black ; head entirely red, a slight impression at each side the front, rather 

 strongly punctured, slightly rugosely so behind ; prothorax finely punctured, with 

 four large black spots, two at front, at each side the middle, somewhat triangular, 

 and two squarer, at each side tlie middle of the base, — these are more or less broadly 

 united two by two, leaving a somewhat triangular space at the sides anteriorly, and 

 enclosing a discal space of a pentagonal form, its apex directed to the front ; tho 

 reflexed margins entirely testaceous-red ; elytra rather strongly seriate-punctate, tho 

 intervals very finely and sparsely punctulate, having a large black patch at each side 

 the scutellum, another, smaller, on the shoulder, and two broad, transverse bands, 

 one median, the other sub-apical, neither of which extend to the suture ; reflexed 

 margins entirely testaceous-red ; imder-side, mouth organs, and legs shining reddish- 

 brown ; ordinarily, the sterna are entirely deep black, but in one of my examples 

 the prosternum is reddish-brown. Long. corp. £5 lin. 



Hah. : Sydney, New South Wales ; four examples. 

 Platydema thalUoides, Pascoe, from the description, should be 

 very near to, if not identical with, this species. 



HOPLOCEPHALA AMAZONICA, Sp. 71. 



? . Shining reddish-brown, epistoma (entirely) , head in front, and legs ferru- 

 ginous ; antennae and mouth organs ferruginous-yellow ; head rounded in front, 

 rather strongly and very closely punctured, front with a well-marked triangular 

 depression, a small tubercle within, and close to, each eye ; prothorax angidar at 

 the sides, i. e., rapidly expanded to the middle, or very slightly beyond, thence 

 abruptly, but rather more curvedly, contracted to the hind angles, which are 

 rounded ; elytra distinctly transversely rugulose. Long. corp. 2i lin. 



Hah. : Santarem, Lower Amazons ; one example, $ . 



Differs from H. artnata (Cast, and Brulle) by the lighter colour, 

 the stronger and much closer punctuation on the head, the well- 

 marked triangular frontal depression, the somewhat differently formed 

 prothorax,* and the more decidedly transversely rugulose elytra. 



I have not seen H. Hoffmansegi, C. and B., but, as its describers 

 state the head to be finely punctured, and the colour entirely brown, 

 it should be a different species from the present one. 



* In H. armata the sides of the prothorax are expanded from the apex to decidedly beyond 

 the middle, and from thence arc broadly rounded to the base, almost completely effacing the 

 hlud angles. — F. 13. 



