284 Mr. F. P. Pascoe on new Genera and Species of 



of the striae more elevated, the punctures larger, and, above 

 all, a broad callosity at the base of the elytra. 



Pterohelceus alternatus. 



P. subanguste ovalis, niger, nitidus ; clypeo autice vix emarginato, 

 sutura fere obsoleta ; elytris in medio planatis, leviter seriatim 

 pimctatis, interstitiis alternis elevatis. 



Hah. "Interior." 



Rather narrowly oval, black, shining, somewhat depressed ; 

 head finely punctui-ed ; clypeus scarcely emarginate in front, its 

 suture nearly obsolete ; prothorax minutely punctured, a broad 

 shallow fovea on each side at the base, no groove, the expanded 

 margins not recurved ; scutellum curvilinearly triangular ; 

 elytra flattish at the middle and base, finely seriate-punctate, 

 the alternate intervals of the rows raised, the fourth, eighth, 

 twelfth, and sixteenth (the last) much more so than the others, 

 the expanded margins broad at the base, gradually narrower 

 to the apex ; body beneath and legs black, slightly glossy, 

 tibiae covered with short spinous hairs ; antennae short, not 

 reaching to the end of the prothorax, black. Length 8 lines. 



A very distinct species, in outline resembling P. Reichei^ 

 but the elytra with expanded margins and strongly marked 

 elevated lines, &c. Dr. Howitt merely gives " Interior " as 

 its locality. 



Pterohelceus minimus. 



P. oblongo- ovalis, piceus, subiiitidus, marginibus clypeoque pallidio- 

 ribus ; prothorace confer tissime oblongo-punctato ; elytris subtu- 

 berculatis, subtiliter et vage punctatis. 



Hah. Cooper's Creek. 



Oblong-oval, pitchy brown, subnitid, the margins of the pro- 

 thorax and elytra, and the anterior part of the head paler, yel- 

 lowish brown ; head densely punctured, the clypeal groove very 

 indistinct ; prothorax rather short, covered with fine oblong 

 punctm*es, the intervals very narrow, and in certain lights 

 causing the surface to assume a delicately corrugated appear- 

 ance, the expanded margins narrow and slightly reflected ; scu- 

 tellum transversely triangular ; elytra minutely and irregularly 

 punctured, with scattered minute tubercles, especially near the 

 suture, the expanded margins very narrow ; body beneath and 

 legs glossy reddish testaceous ; antennae short, inclining to 

 testaceous. Length 3^ lines. 



The smallest species of the genus, and very distinct on ac- 

 count of the sculpture of the prothorax and elytra. I have 



