104 Mr. Arthur M. Lea's Revision oj the 



GuERiNii, Macl., Trans. Eut. Soc. N. S. Wales, II, p. 263 ; 

 Wat., Cist. Ent., II, 1877, p. 196 ; Fairm., Journ.Mus. 

 Godeffr., 1879, p. 101 ; Bourg., Ann. Mus. Civ. Gen., 

 1889, p. 290; Lea, P. L. S., N.S.W., 1898, p. 562. 

 discicollis, Fairm., Pet. Nouv. Ent, 1877, II, p. 174; 

 Journ. Mus. Godeffr., 1879, p. 101. 

 Queensland : Gayndah, Rockhampton, Brisbane ; N. S. 

 Wales : Tweed and Richmond Rivers. 



DISTINGUENDUS, Fairm., Ann. Soc, Ent. Belg., 1883, p. 21 ; 

 Bourg., Ann. Mus. Civ. Gen., 1889, p. 291. 

 Queensland: Somerset. 



siMiLLiMUS, Blackb., T. K. S., S.A., 1900, p. 57. 



S. Australia : Adelaide ; N. S. Wales : Mount Brown, 

 Blue Mountains. 



ROSTRATUS, Blackb., I. c, p. 58. 

 S. Australia : Yorke's Peninsula. 



AMABiLis, Lea, P. L. S., N.S.W., 1898, p. 560. 



N. S. Wales : Sydney, Blue Mountains, Forest Reefs. 



Calochromus mastersi, n. sp. 



^ . Black ; prothorax (a large medio-basal spot black) and elytra (a 

 rather small apical spot, common to both, black) reddish-testaceous. 



Head highly polished, grooved along middle ; armed with a 

 strong, sharp, beak-like process. Antennae fairly stout, extending 

 to about one-third from apex of elytra, joints scarcely compressed. 

 Prothorax transversely oblong, with a deep median somewhat pyri- 

 form sulcus, sides deeply impressed at base and apex, the impressions 

 connected by a curved depression. Scutellum subquadrate. Elytra 

 comparatively narrow, each with four distinct costae, between which 

 are feeble elevations ; densely punctate. Abdomen with penulti- 

 mate segment feebly emarginate. Anterior /emora moderately stout, 

 unarmed. 



Length 8 J mm. 



Hah. N. S. Wales (Macleay and National Museums). 

 In appearance very much like guerini, hut the head armed 

 in the male. 



A female, evidently belonging to this species, is in the 

 National Museum ; it differs in having the head un- 

 armed, antennae shorter, and the prothoracic spot con- 

 nected with apex as well as with base. 



