44 



described species by its unusually long subcylindric prothorax, 

 its narrow obovate elytra, brilliant-blue colour above and 

 below, and its pale-yellow femora. Another genus may pos- 

 sibly be found necessary for this species. Type in the author's 

 collection. 



Amarygmus hackeri, n. sp. 



Convex and ovate; head blue, pronotum brilliant-purple, 

 elytra violet-purple, with metallic reflections on suture and 

 sides, under-side black, legs piceous-red, antennae and tarsi 

 clear-red. 



Head very finely punctate, eyes approximate, distant 

 little more than the second antennal joint, antennae long, con- 

 siderably enlarged towards apex, joint three nearly as long 

 as fourth and fifth combined, seventh to tenth rather widely 

 subcorneal, eleventh pear shaped. Prothorax very convex, 

 straight in front, slightly sinuate behind, twice as wide at 

 base as at apex, all angles obtuse but (with the margins) not 

 evident from above, sides evenly arcuately converging for- 

 wards. Scutellu7n small, triangular, metallic-green. Elytra 

 very little wider than prothorax, moderately convex, striate- 

 punctate, the punctures in striae very small, close and half- 

 concealed, intervals feebly convex, except towards sides, and 

 impunctate ; under-side minutely striolate, basal joint of hind 

 tarsi as long as the rest combined. Dimensions — 6*5 x 3 mm. 



Hah. — Queensland: Coen River, Cape York (H. Hacker). 



A single specimen, given me some time ago by Mr. 

 Hacker, is distinguished from its nearest ally, A. tropicus 

 (supra), by its brilliant colour, approximate eyes, and im- 

 punctate intervals inter alia. Type in the author's collection. 



Amarygmus gemmatus, n. sp. 



Elongate-ovate, very convex; head and prothorax 

 metallic-green, the latter purplish towards base, elytra bright 

 coppery-purple, the punctures a brilliant-gold; under-side 

 brownish-black nitid, legs black above, tibiae reddish beneath, 

 antennae and tarsi castaneous. 



Head densely, finely punctate, eyes very distant (about 

 the length of the first two antennal joints), antennae short 

 and thickened apically, all joints unusually short, third 

 scarcely longer than fourth, eighth to tenth subtriangular, 

 eleventh bluntly ovate and larger than preceding. Prothorax 

 convex, not much wider at base than at apex, sinuate at apex 

 and base, the apex produced in the middle and at the anterior 

 angles, these widely acute (about 80°), posterior angles ob- 

 tuse, sides evenly, not widely, rounded, densely and finely 

 rugose-punctate, without any medial line ; lateral margins not 



