640 MISCELLANEA ENTOMOLOGICA, NO. V. 



of the thorax at the base, but expanding behind, the margins very- 

 broad, a little rellexed, and rather thinly granulate, the disk 

 carinate at the suture, and on each elytron about eleven or twelve 

 irregular rows of more or less distant granules, the second row from 

 the suture having the granules more continuous, and presenting 

 near the base a costif orm appearance. 



Long. 12 lines, lat. 8 lines. 



Hah. — Darling River. 



66. HELiEUS PALLIDUS, n. sp. 



The very pale yellowish-brown diaphanous appearance of this 

 insect may possibly be due to its being very fresh from the 

 chrysalis, but, quite apart from its colour, it is undoubtedly a very 

 distinct species. In form it is not unlike H. intermedius. Head 

 rather flat, punctate, canaliculate between the eyes, these approxi- 

 mate. Thorax transverse, very broadly margined, the margins 

 very minutely punctate, much flattened out, and a little recurved 

 on the edges ; the disk is small, convex, and of a darker colour 

 than the margins, uneven and foveated, with an erect rather sub- 

 acute spine near the middle of the base ; the anterior angles are 

 largely rounded in front of the head, the posterior are strongly 

 pointed backwax-ds. The elytra are a very little broader than the 

 thorax, and scarcely ampliated behind the shoulders, the margins 

 like those of the thorax, the disk convex, carinate on the suture 

 and rather densely covered with punctures very irregularly 

 disposed. Body beneath and legs brown, finely striolate-punctate. 



Long. 12 lines, lat 8 lines. 



Hah. — South Australia. 



The only other species resembling this are — H. jjrinceps, H. 

 inter Tnedius, and H. Colossits. 



The first of these has the elytra with distinct rows of granules ; 

 the second has the elytra smooth, with very small scattered 

 granules ; the last has minute granules on the disk of the elytra, 

 and large scattered punctures on the margins ; whereas the present 

 species has the disk of the elytra closely and irregularly punctured 

 without trace of granules. 



