90 REVISION OF SYMPETES AND HEL^U8, ETC., 



edge of prothorax is concave, as wide as that of the elytra and 

 faintly rugulose. The elytra have rows of small, distant pustules. 

 There is an evident subsutural costa near scutellum, the others 

 obsolete. The basal tooth on prothorax is sharp, erect, and sub- 

 conical, while the carina in front is subobsolete. Dimensions, 

 20x 11 mm. 



Section ii. — Elytra pilose or tvfted. 



There are five species so far described, on which I append 

 short notes. 



H. perforatus Latr., is the original type of the genus. I have 

 taken specimens at Perth, and have examined the type in the 

 Paris Museum. It is well known in all collections by its four 

 rows of long black hairs. 



H. Kirhyi Breme. — I have a specimen from N. W. Australia, 

 easily to be distinguished from H. perforatus by the following- 

 characters — Form more regularly elongate-oval (less enlarged 

 posteriorly), margins narrower and more horizontal, tufts of hair 

 shorter, more sparse and red; prosternal keel more elevated and 

 nitid, especially between the coxse. 



//. Spencei Breme, possibly a variety of the former, has its 

 elytra much wider than the thorax. 



//. Spinoloi Hope, differs from all others of the genus in that 

 the anterior processes of prothorax do not meet in front. Macleay 

 therefore placed it in the incisus-gvowT^ of Saragus. Having 

 seen the t^'pe in the Oxford Museum, I have no doubt as to its 

 being a true Helieus, and am inclined to consider it as an aberrant 

 form of H. perforatus. I have never seen any other specimens. 



H. fulvo-hirlus Lea, is much smaller than the preceding. Lea 

 gives 20 X 14 mm. as the dimensions, but a specimen in the 

 Macleay Museuu), presented by Mr. Lea, measures 19x12 mm. 

 The prosternum is rounded, not carlnate, the elytra finely 

 punctured. 



Section iii. — Elytra bicostate. 



Synonym y. — II. falcatus Pasc., = Zr. Perronii Boisd.C?) As 

 in most cases, Boisduval's species are impossible to identify by 



