110 Mr. Arthur M. Lea's Revision of the 



LuciOLA PLATYGASTER, n. sp. {Figs. 101, 102.) 



(J . Blackish ; prothorax, scutellum, mesosternum, trochanters 

 and four front coxae more or less flavous; two apical segments of 

 abdomen whitish throughout. 



Head large, deeply impressed along middle. Eyes very large, 

 occupying about two-thirds of the lower surface of head and less of 

 the upper. Antennae passing hind coxae. Prothorax about twice 

 as wide as long, sides gradually dilated to near apex, apex produced 

 in middle, all the sides margined ; densely and coarsely punctate ; 

 disc irregular. Elytra scarcely w'ider than prothorax ; densely, 

 rugosely and moderately coarsely punctate, and with traces (two on 

 each) of very feeble costiform elevations. Two apical segments of 

 abdomen large and wide, the apical one terminated by three large 

 lobes, of which the median one is somewhat larger and just perceptibly 

 shorter than the others, at its base is a subfoveate impression. 



Length, 7 mm. 



9. Differs in being larger (7| mm.), head smaller, and very 

 feebly depressed between eyes, these also .smaller ; abdomen with 

 only one white segment and the following one almost semicircularly 

 emarginate. 



Eah. Queensland : Cairns (Macleay Museum). 



The colour of the under surface will readily distinguish 

 from pudica and the description of australis. From 

 humilis the shape of the apical segment of the abdomeu 

 in the male and the much more deeply emarginate 

 segment of the female will readily distinguish it. In the 

 males of both species, as also in Jlavicollis, the femal^ 

 appears to have a short triangular supplementary segment. 



Genus Atyphella, OUiff, P. L. S., N.S.W., 1889, p. 645. 



The species of this genus or subgenus are all Australian, 

 and may be tabulated as follows : — 



A. Elytra entirely dark . . . „ scintillans, Oil. 



AA. Elytra not entirely dark. 



B. Size comparatively large Hammans, OIL* 



BB. Size comparatively small. 



C. Elytra parallel-sided lychmis, Oil. 



CC. Elytra with rounded sides brevis, n. Sp. 



* I have examined the type of this species and it certainly appears 

 to be a good one, but Ollitt's remarks that " This species is con- 

 spicuous by the striped appearance of its elytra, and the black patch 

 on its prothorax " does not serve to distinguish it from lyclmus. 



