38 REVISION' OF THE AlIYCTERIDES, vi., 



Guerin's description and that the known locality of A. aureolas is far removed 

 from Port Jackson. Furthermore, none of Guerin's other species of Amycterides 

 are at all events to be now found in the Paris Museum. On the other hand, it is 

 rather extraordinary that Boisduval should have placed under the one species 

 two such dissimilar insects as A. miccronatus and ,1. aureolus. The question of 

 the priority of Gueiin's and Boisduval's names hangs on the determination of the 

 date of publication of A. echinatus Guerin. Possibly the best solution of the 

 problem would be to accept the name as being first used by Dejean. and then to 

 sink it as a synonym of A. marsltami Kirby. 



In the meantime, and until further information is available. I jiropose to 

 regard the Sydney species as ,1. echinatus Guer., as it seems to me that no fur- 

 ther confusion will be caused by following this course, since that insect is already 

 labelled in most collections under this name. 



It is to be noted that in Masters' Catalogue the references (No. 4838) ai-e 

 given to eclmiatus Guer., though in his revision (Trans. Ent. Soc. N.S. Wales, i.. 

 1865, p. 280) Macleay quoted the species as of Boisduval, making no reference to 

 Guerin-Meneville's use of the name. 



The Sydney species is included in the tabulation given in the present paper, 

 but I have thought it ad\'isable not to give a lengthy description. The species is 

 closely allied to A. spim'fer Macl., and A. mucrnnatus Macl.. differing from the 

 former in the more elongate antennae, with elongate peduncle to club, and from 

 the latter in its more robust form, and somewhat different supraorbital crests. 

 The female is more produced than the male, but is not strongly mucronate as in 

 A. mucronatus. 



ACANTHOLOPHU.S MUCRONATUS Macl. 



Macleay, Trans. Ent. Soc. N.S. Wales, i., 1865, p. 287; A. echinatus, Boisd. {nee 

 Guerin), Voy. de 1' Astrolabe, ii., 1835, p. 371; Ferguson, Proc. Linn. 

 Soc. N.S. Wales, xxxvi., 1911, p. 143. 



An elongate species, tlie female with the elytra strongly produced at apex 

 and separately mucronate. 



c?. Elongate; rather densely clothed with brown subpubescence ; thorax with 

 a narrow, grey, median stripe; elytra maculate with grey. 



Rostrum with lateral margins angidate in middle. Head as in A. marshami; 

 supraocular crests short, rather stumpy, the rami little projecting. Antennae 

 long and slender, the second joint of funicle noticeably longer than fii-st, club 

 with an elongate peduncle. Prothorax similar to A. marshami, the median 

 tubercles somewhat larger, and the lateral tubercles somewhat longer. 

 Elji;ra long and comparatively narrow; tubercles larger than in A. 

 marshami, first I'ow with 7, second with fi, third with 3 — 4 in addi- 

 tion to humeral tubercle which is smaller lint acute. Fndcr surface with 

 intermediate segments rather closely set with setigerous punctures tending to l)c- 

 eonic conllucnt, apical segment strigose. Legs rather long, simple. 



5. Head and prothorax as in d": elytra more obese, the apex much produced 

 and terminating on each side of suture in a long mucronation, these latter some- 

 times widely separated, sometimes approximated. Venter convex, punctures 

 smaller and less confluent. Dime>isi<i>is: 6. 18 x 6.5 nun.; 9- 19 x 7.5 mm. 



Hah. — N.S. Wales: Blue Mountains. 



The male resembles the other members of the group, but is distinguished by 



