578 



setiferoii6 granules; reflexed margins almost vertical, longitud- 

 inally concave and finely wrinkled and granulate. Length, 

 25 mm. 



Hab. — South Australia : Ooldea. Type (unique), I. 7964. 



An elongate-elliptic species allied to squamosus, but 

 discal carinae of elytra continued to join in with the sublateral 

 rows of granules (as in ellipticus and moniliferus), median 

 carina of pronotum different and the elytral margins stronger. 

 In Carter's table < 25) it would be associated with derby ensis, 

 from which it differs in having the prothorax narrower, its 

 carina wider and practically touching apex (ite base is curved, 

 acute, and overhangs the scutellum), elytra more convex, 

 more parallel-sided, with the flanges wider and their reflexed 

 edges conspicuously wider. 



Helaeus waitei, n. sp. 

 PI. xxxvi., figs. 76, 77. 



Dull-black; flanges and parts of appendages more or less 

 obscurely reddish-brown. Upper-surface opaque. 



Head with small setiferous punctures. Prothorax twice 

 as wide as long (23 x 11 mm.); disc irregularly depressed and 

 with an acutely-conical, subbasal tubercle ; punctures extremely 

 minute; flanges very wide, at base very much wider than disc, 

 feebly concave, sloping upwards, and with small but distinct 

 setiferous punctures, tips widely crossed, reflexed margins 

 almost vertical. Elytra slightly wider than long (25| x 23 J 

 mm.), with numerous small punctures and scarcely visible 

 granules, near flanges each with a very feeble and non- 

 granulate elevation, suture narrowly carinated ; flanges very 

 wide, especially at base, with numerous 6mall but fairly 

 distinct granules, reflexed margins at base as on prothorax, 

 but gradually decreasing till at the tips the flanges are simple. 

 Length, 29-35 mm. 



Hab. — South Australia: Ooldea, Winbring. Type, I. 

 7963. 



Proportionately wider and with wider flanges than any 

 other species of Group 1, known to me, the elytral granules 

 (on the disc) are also extremely faint (not visible to the naked 

 eye). In Blackburn's table (ante, 1899, p. 37), it would be 

 associated with ingens, from which it differs in being consider- 

 ably wider, with wider flanges (on this species each elytral 

 flange at the extreme base is distinctly wider than the 

 intervening space), and by the entire absence of granules 

 from the vague elevation on each elytron just before the 

 flange ; on two co-types of ingens these granules, although 



(23)Proc. Linn. Soc. N.S. Wales, 1910, p. 93. 



