464 Mr. F. P. Pascoe 07i some new or little -l-noivn 



Helceus castor. 



H. late oyatus^ fusco-brunneus, vix nitidus, setiiliferus^ marginibus latis^ 

 explanatis; protliorace angulis posticis prodiictis, incurvis; elytris 

 sutura elevata, iitroque costa valida usque ad partem tertiam percur- 

 rente. 



ITab. South Australia. 



Broadly ovate, brownish, scarcely shining, margins of the prothorax 

 and elytra broad, and only slightly reflexed, the edges with an erect, 

 narrow border ; antennae nearly linear ; prothorax with short, scattered 

 bristly hairs, the perforated portion with an elevated margin, disk with 

 a sharp longitudinal line, posterior angles falcate, overlapping the elytra ; 

 scutelluni broadly triangular ; elytra irregularly pimctm^ed, and clothed 

 with numerous scattered minute bristles, costa on each side the suture 

 terminating at about a third from the apex j body beneath dark brown 5 

 legs rugose. Length 9 lines. 



A broad, stout species, the sides of the elytra within the margins 

 more vertical and elevated than in any other. 



Helceus fcdcatus. 



IT. ovatus, niger ; protliorace marginibus anticis in processum acute fal- 

 eatum terminatis; elytris lividis, sparse setuliferis, in utroque costa 

 crenata usque ad tertiam partem percm-rente. 



JIab. Kangaroo Island. 



Differs from H. Peronii, Bois., in the following particulars : — antennas 

 narrower, much less dilated at the apex ; prothorax obsoletely granu- 

 lous, its anterior processes gradually narrow^er to the point, or, in other 

 words, completely falcate, not of equal width until near the point, and 

 not hollowed out above 5 elytra very glossy, as if varnished, their surface 

 very slightly punctm'ed and -svith scattered curved bristly hairs, and 

 the lateral costa more decidedly crenate. Length 5-6 lines. 



Stmpetes [HelseinaeJ. 

 Characteres ut in Helceo, sed caput liberum, anguli antici prothoracis 

 baud producti. Lahrnm obtectum. 



The form of the prothorax will not allow the species described 

 below being placed in Helwus ; and the declivous mesosternum with- 

 out any notch for the reception of the prosternal process, independ- 

 ently of other characters, separate it from Saragus. It is quite an 

 Helceus in habit. I received my specimen from Mr. MacLeay ; and it 

 is the only one I have seen. A second species has been described 

 by Mr. White, under the name of Encej>halus tricostellus (App. to 

 Gray's Voyage, p. 461). 



