424 STUDIES IN AUSTRALIAN ENTOMOLOGY, 



the base, with the basal angles more decidedly marked ; and the 

 elytra with the third, fifth and seventh interstices much more 

 raised than the alternate ones. 



HOMALOSOMA ATRO-VIRIDE, n.sp. 



^. Robust, elongate-oval, convex ; prothorax transverse, 

 subcordate, posterior angles rounded ; elytra oval, punctate-striate, 

 interstices lightly costate, shoulders rounded. 



Head black, with greenish reflections ; prothorax black, 

 becoming green towards the sides and in the lateral basal im- 

 pressions ; elytra blackish-green (summits of the interstices black, 

 the rest of the elytra of a green hue) ; undersurface, legs, 

 antennae and palpi piceous (a faint green tinge on the prosternal 

 episterna). Head large (5-6 x 6-4 mm.), smooth, lightly convex ; 

 front with two widely placed shallow irregular impressions ; 

 clypeal suture distinctly impressed ; eyes convex, not prominent ; 

 three supra-orbital setigerous punctures on each side.* Pro- 

 thorax subcordate, short, transverse (5-6 x 8-2 mm.), broadest 

 before the middle, evenly and roundly narrowed to base, convex, 

 declivous towards base ; anterior margin emarginate ; base widely 

 and very lightly emarginate ; anterior angles narrow, obtuse, 

 projecting slightly ; basal angles not marked, rounded ; border 

 reflexed, widely so and forming the margin of the basal fovese at 

 the basal angles, narrowly marked along each side of the base 

 almost to the middle ; median line strongly impressed, reaching 

 the base, placed in a well marked channel ; a deep wide depression 

 near each basal angle ; the space between these depressions 

 flattened and defined anteriorly by an arcuate transverse line ; 

 two marginal setigerous punctures on each side, the anterior a 

 little Ijefore the middle, the posterior near the edge considerably 



* My single specimens of H. cyaneociiirtum, Boisd., and H. superhuin 

 Cast., also have three setigerous supra-orbital punctures on each side; all 

 the other species of Homaloaoma known to me have only two supra- 

 orbital punctures, tlie normal number among the Feroiiides. Considering 

 how constant the presence of two supra-orbital punctures is among the 

 Feronide-s and allied tribes, and the high classiticatory value attributed to 

 their presence among this division of the Garahid<e by Dr. G. H. Horn, this 

 variation from the ordinary number is worthy of note. 



