120 Transactions. 



Tibiae nearly straight, tlieir inner and outer apical angles somewhat 

 prominent. Tarsi with dense hrush-hke soles and setose above, basal 

 three joints rather short, the 2nd quite transverse. Funiculus with a few 

 outstanding setae, 2nd joint rather longer than 3rd but shorter than the 1st, 

 joints 5-7 submoniliform ; club elongate-oval, triarticulate. 



Underside nigrescent, with small greyish-yellow depressed scales. 

 Metasternum hardly as long as the 2nd ventral segment, which, in the 

 middle, is shorter than the basal one. 



This elegant species may be immediately identified by the striking 

 contrast presented by the dark interstices and dense pale squamosity of 

 the hind-body. 



Length (rostrum inclusive), 16 mm. ; breadth, 6| mm. 



Vanguard Peak ; elevation, 5,000 ft. My specimen was discovered by 

 Mr. H. Hamilton, whose name I have much pleasure in attaching to it, 



Heteromias gen. no v. 



Rostrum rather more than half the length of thorax and about half 

 its width, its frontal portion arched, oviform, and pterygiate, the basal 

 narrower ; it is without clypeal sutures of any kind, but at its apex a pair 

 of lobes which partly cover the base of the mandibles seem to represent 

 the clypeus. Scrobes subapical, widely open above, directed towards but 

 not reaching the eyes. Head short, globose below. Eyes lateral, trans- 

 versely oval, not prominent, free from thorax, widely separated. Mandibles 

 lamelliform, vertical in front, subtruncate inwardly. Scape moderately 

 stout, gradually incrassate, just attaining the back of the eye. Funiculus 

 stout, its basal joint equalling the following three combined ; 2nd not 

 twice the length of the 3rd, which, as Avell as joints 4-6, is bead-like ; 7th 

 rather broader than the preceding. Club elongate-oval, distinctly triarticu- 

 late. Thorax truncate at base and apex, of equal length and breadth, 

 without ocular lobes. Scutellum distinct. Elytra oblong, slightly in- 

 curved, and rather wider than thorax at the base ; they are moderately 

 narrowed posteriorly, somewhat dehiscent at the extremity, and do not 

 entirely cover the pygidium. 



Legs stout and moderately elongate. Femora subclavate. Tibiae 

 flexuous, bent inwards near the extremity ; the anterior outwardly curved 

 at the apex and obtusely mucronate inwardly ; the other pairs with a short 

 inner calcar and densely ciliate at the apex ; posterior corbels almost quite 

 plane. Tarsi with moderately expanded and lobate penultimate joints ; 

 2nd slender at the base ; the soles of the basal two joints thinly, the 3rd 

 thickly, setose. 



Prosternum rather deeply incurved in front. Metasternum moderately 

 elongate, its hind part and the basal two ventral segments broadly medi- 

 ally depressed, the basal segment curved between the widely separated 

 posterior coxae, and in the middle hardly longer than the 2nd, its apical 

 suture straight and fine in the middle but deep at the sides, 3rd and 4th 

 much shorter than 2nd, 5th as long as the preceding two conjointly, rounded 

 at apex, 6th short but distinct. Anterior coxae prominent and contiguous, 

 the intermediate pair distinctly separated. 



The only available specimen of this alpine genus has given much trouble, 

 owing to the complex structure and my inability to find any near ally. 

 It should, I think, be located at the end of the Cylindrorhinidae, so as to be 

 near Lyperohius, one of the Molytidae, which it somewhat resembles. 



