132 Mr. F. P. Pascoe on new Genera and Species of 



and it may be appropriately called Batraclius gig as. I may 

 hope soon to supplement the following incomplete description 

 by the acquisition of more perfect specimens. 



The head is 26 inches broad (between the ends of the gill- 

 covers), 21 inches long from the snout to the end of the 

 opercle, or 16 inches to the occiput. It is depressed, with the 

 eyes directed upwards, as in Batraclius, covered all over with 

 comparatively small hard scales, the scale-pouches of the skin 

 being also provided with minute scales. The crown of the 

 head is flat, without ridges ; the eyes (1^ inch wide) are far 

 apart (5f inches). The cleft of the mouth is enormous, about 

 16 inches wide, slightly obliquely directed upwards, with the 

 lower jaw somewhat prominent. The jaws, vomer, and pala- 

 tine bones are armed with broad bands of villiform teeth. The 

 vomerine teeth form a semicircular disk, well separated from 

 the palatine bands, which are tapering in front and behind, 

 lancehead-shaped. The maxillary bone (10 inches long) be- 

 comes gradually broader towards its extremity, where it is 

 3 inches broad ; it is entirely smooth. The prasoperculum 

 lias its margin irregularly denticulated ; and the denticulations 

 at the rounded angle are much the strongest, perhaps the 

 remnants of worn -off spines. The margins of the other oper- 

 cles are smooth, but there are still traces of two spines on each 

 operculum. 



The jaws mentioned above are somewhat larger still than 

 those of the head described; so that some individuals of this 

 species must evidently attain an enormous size. 



XXI. — Descriptions of neto Genera and Species of Tenebrio- 

 nid^e from Australia and Tasmania. By FRANCIS P. 

 Pascoe, F.L.S. &c. 



[Continued from p. 45.] 



[Plate XI.] 



After the following additions have been made to the genus 

 Adelium of Kirby*, there remain a few species, the types ap- 

 parently of as many genera related to it, but differentiated by 

 characters which will not allow them to be conjoined. We find 

 that there are three characters which seem to belong without 

 exception to the Adelia, viz. the tarsi tomentose beneath, their 

 penultimate joints subbilobed, and the eyes transverse, narrow, 

 and more or less impinged on by the antennary ridges; a 

 secondary character, because there are cases in which it be- 



* Trans. Linn. Soc. xii. p. 420. 



