26 PEOCEEDINGS OF THE NATIONAL MUSEUM vol. 67 



14. Elytra with a common sutural macula castelnaui Reiclie. 



(marginata Castelnau.) 

 Elytra with an entire sutural vitta. somewhat expa;ule<l meilially. 



suturalis Germar. 



15. Sutural macula nearly round. Form ovate * centralis MacLeay 



Sutural macula oval, more or less produced toward the scutellum 16 



16. Size larger, 9 mm. Sutural macula larger * maculigera MacLeay. 



Size smaller, 5 mm. Sutural macula smaller * thouzeti Castelnau. 



17. Thorax and elytra pale yellow with black maculae * amabilis Castelnau. 



Thorax and elytra in large part black or dark piceous 18 



18. Thorax and elytra without distinct pale margins 19 



Thorax and elytra with broad, distinct, pale margins 24 



19. Elytra with pale macula on each 20 



Elytra with oblique or curved vittae 21 



20. Elytra with a dull reddish margin. Form slightly broader. 



colymbetoides Westwood. 

 Elytra Avithout reddish margin. P'orm slightly narrower. 



bimaculata Castelnau. 



21. Elytra alutaceous, with large, pale macula occupying most t>f the disk, 



deeply emarginate toward the suture * spreta Blackburn. 



Elytra smooth, shining 22 



22. Elytra each with oblique, arcuate vitta, broader and somewhat hooked 



basally * bicolor Castelnau. 



Blytral vittse not arcuate and hooked 23 



23. Elytra each with oblique vitta extending from base near the middle to 



suture, slightly behind the middle, forming a broad V. 



* rockhaniptonensis Castelnau. 



Elytra vittae longer, extending nearly to elytral apices. Thorax unusually 



elongate. Elytra nearly as wide as long * macleayi Masters. 



24. Elytra each with one macula * albopicta Newman. 



Elytra each with two maculae or a vitta 25 



25. Elytra each with two maculae 26 



Elytra each with an oblique vitta 27 



26. Pale margins of thorax and elytra wider. Elytra more strongly alutaceous 



and less shining. Anterior maculae bifurcate posteriorly. Head larger. 



Size larger, 7-2.5 mm maculata Newman. 



Pale margins of thorax and elytra narrower. Elytra more shining. Ante- 

 rior maculae produced posteriorly at their middle. Head smaller. Size 

 smaller, 5.5 mm quadrimaciilata MacLeay. 



27. Elytral vittae very broad, covering most of the elytra. 



* occidentalis Castelnau. 

 Elytral vittae narrower, more or less dilated at the humeri 28 



28. Thoi'ax with a median dark area hydroporoides Westwood. 



Thox'ax with a pale yellow median vitta * bivittata Gestro. 



The following species of Sfhallomorpha are identified in the 

 material at hand : 



SPHALLOMORPHA DECIPIENS Westwood 



Victoria (2), Victoria, Austral (Edwards Coll.), South Australia 

 (Lea) (2).— Coll. Amer. Mus. Nat. Hist. 



