80 LORD HOWE ISLAND. 



*DlAPHOEOMEEUS IR1DIPEX>'IS, Ghaud . 



Diaphoromerus iridipennis, Chaudoir, Bull. Mosc, ISJiS, p. 405. 



This species is common in Queensland, and also occurs in Norfolk Island. 



*LESTIGKATnUS FFGAX, Sp. nOV. 



EloDgate-ovate, dark piceous, shining, sometimes with a bluish tinge ; 

 elytra strongly striate, the interstices rather narrow, plain ; antennae (except 

 the basal joint) and palpi reddish testaceous ; legs rufo-piceous. 



Head narrow ; eyes rather prominent. Antenna^ more than two-thirds 

 the length of the body, the basal joint piceous. Prothorax narrowed 

 behind, with a distinct median line ; the sides rounded in front ; posterior 

 angles rounded. Elytra oblong-ovate, very slightly contracted before the 

 middle, strongly and regularly striate, the interstices narrow and smooth, 

 the second stria, on each side, with an obscure punctui^e before the middle ; 

 sides slightly sinuate before the apex. Legs rather long. Length 13 mm. 



Differs from the Tasmanian Lestir/natlius cursor, Er., to which it is very 

 nearly allied, by its more strongly and closely striated elytra, and by having 

 the prothorax rather less narrowed behind. The head is a little smaller, and 

 the iuterstices, besides being narrower, have a tendency to approach one 

 another both in front and behind. 



*Dtscolt;s hilaeis, sp. nov. 



Elongate-ovate, piceous, shining ; head rather broad, moderately convex ; 

 prothorax transverse, the margins broad ; elytra rather strongly striate, the 

 interstices broad and smooth ; antenna? reddish testaceous ; legs pitchy red. 



Eyes moderately prominent. Antennae about half as long as the body. 

 Prothorax considerably narrowed behind, with a distinct median line, and a 

 large f oveolate impression on each side at the base ; sides rounded for nearly 

 half their length, then narrowed to the base ; the posterior angles rounded. 

 Elytra oblong-ovate, strongly and regularly striate, the third stria, with an 

 obscure puncture near the base ; the second stria with two obscure punctures, 

 one near the middle, the other towards the apex ; sides rounded, slightly 

 sinuate before the extremity. Length 10-11 mm. 



fSummit of Mount Ledgbird (2,500 feet), and throughout the island; 

 appears to be a common species. 



Allied to Dyscolus dilatatus, Er., but with the head more convex, and the 

 prothorax broader and more strongly margined, &c. The basal joint of the 

 antenna- is also proportionately longer. 



DTTISCID^. 



Ctbistee triptjnctatus, Oliv. 



JDytiscus Iripunctatus, Olivier, Ent. 1795, III, p. 14, pi. 3, fig. 24 ; Sharp, 



Trans. Eoyal Dubl. Soc, (2) II, p. 727 {im2)—Cyhister qayndahensis, 



Macleay, Trans. Ent. Soc, N.S.W., 1871, II, p. 127. 



A single specimen of this species, which is found in Australia, and almost 



universally throughout the tropical and sub-tropical regions of the old world, 



was recently obtained in Lord Howe Island by Mr. Langley. 



HTDEOPHILID^. 



*STEE]sroLOPnus nitidllus, Mad. 

 Sternoloplms nitidulus, Macleay, Trans. Ent. Soc. N.S.W., 1871, II., p. 129. 

 I have seen specimens from fresh-water pools near Mount Gower, which 

 agree in every respect with the type of this Queensland species. 



