138 Scientific Proceedings, Royal Dublin Society. 



for whilst in some the bands on the prothorax and scutellum are 

 green and conspicuous, in others they are blue, and in others 

 obsolete. 



The larva of this insect is shortly oval in shape. The 

 abdomen, not yet covered by the backward growth of the 

 scutellum, is of a bright red colour, except for a broad central 

 metallic blue band, and marginal spots of the same hue above, 

 and dark central and lateral patches on each segment below. 



The British Museum specimens are from various Austro- 

 Malayan islands. 



Genus. — DiCTYOTUs, Dall. 



ISictyotMs transversus, sp. nov. 

 (PL XII., fig. 1.) 



Head ochreous, densely punctured with black ; the three lobes 

 of equal length, a f or wardly- directed spinous process on either side 

 in front of the eyes. Eyes steel-gray. Ocelli reddish. Antennse 

 with first, second, and third joints ochreous ; the two distal joints 

 brown. Pronotum ochreous, with numerous black punctures, 

 which are, however, absent from a transverse patch which is 

 situated near the hinder margin, and occupies almost the whole 

 width of the prothorax ; two blackish markings near the anterior 

 border. Scutellum ochreous, with black punctures which leave 

 central and lateral clear patches at the anterior border and an 

 apical clear patch posteriorly. Elytra ochreous, with numerous 

 black punctures, and suffused with brown centrally; membrane 

 black-brown. Legs ochreous, spotted with brown. Abdomen 

 beneath dark chestnut-brown, mottled with creamy yellow, and 

 each segment yellow laterally. 



Length, 8 mm. ; breadth, 4-5 mm. 



A single example was taken on Murray Island. It is very closely 

 allied to D. lineatus, Wlk., from South Australia, but can be 

 readily distinguished by the clear yellow transverse stripe on the 

 pronotum. 



The genus Dictyotus is typically Australian ; several species 

 occur in Tasmania and one in New Zealand. 



