52 [March, 



distinct, incomplete, fine median carina. Scutellum triaiigfular. Elytra elon- 

 o^ate, much wider tliiin the prothorax, laterally compressed, broadly flattened 

 on the disc, parallel from a little helow the oblique humeri to near the apex 

 and then abruptly narrowed to the tip, the apices produced and conjointly 

 rounded; coarsely punctato-striate, the interstices uneven, the third with a 

 rather lar^re oblique tubercle at some distance beyond the middle and a still 

 larger conical tubercle before the apex, the latter connected with the swollen 

 apical portion of the costiform sixth interstice by an oblique ridge. Beneath 

 closely granulato-punctate ; mesosternal process very narrow, terminating in a 

 small tubercle ; ventral segment 6 sulcate down the middle. Legs long, 

 rather slender, tibiae strongly sinuate within, the anterior pair bowed inward 

 at the apex. 



Length (excl. head) 8|-9, breadth 3-3;|^ mm. 



Sal). TiEKEA DEL FuEGO, Summit o£ Kater's Peak, an abrupt cone 

 of greenstone, alt. 1700 ft., near Wigwam Cove, Hermite Island (C. 

 Darwin). 



Two specimens, assumed to be males, found under stones, in 1832. 

 The broadly flattened, laterall}^ compressed elytra give this species the 

 general facies of the Tenebrionid-genus Nosoderma. It is very like 

 i. iJEly frog onus) varicosus Blanch., his figure nearly agreeing with the 

 insect before me, except that the tubercle on the third elytral interstice 

 is wanting, and the prothorax is obviously longer ; the rostrum, moreover, 

 is said to be carinate. Blanchard's type, destroyed by his artist, was from 

 Port Famine, on the northern side of the Sti-aits of Magellan. One of 

 Darwin's examples is labelled, '"'' quadritiiberculatus^'' apparently in Gr. 

 R. Waterhouse's handwi'iting. Enderlein (1912) enumerated three 

 species only of Listroderes from Tierra del Fuego, all described and 

 figured by Fairmaire, and very different from the present insect. The 

 Magellanic forms named by G-ermain and others are also dissimilar. 



Listroderes hater ensis, n. sp. 



Elongate, oblong, rather broad, flattened on the disc, shining (when 

 denuded), black, the antennae and tarsi rufescent ; rather sparsely clothed 

 with minute brownish hairs ; densely, rugosely, the rostrum, head, and pro- 

 thorax roughly, punctate. Rostrum very stout, shorter than the prothorax, 

 slightly widened outwards, convex down the middle, and with an indication of 

 feeble carina towards the sides ; liead foveate between the eyes ; antennae 

 rather long and slender. Prothorax broader than long, rounded at the sides, 

 the latter obliquely converging anteriorly, and slightl}' sinuate and feebly con- 

 vergent towards the base ; broadly trifoveate on the disc (the two posterior 

 foveae transversely placed), and also with an interrupted median sulcus. 

 Elytra long, broad, subparallel for three-fourths of their length (the sides 

 slightly rounded below tiie humeri and sinuate posteriorly), flattened on the 

 disc, and laterally compressed, the apices somewhat oblique, conj oiutly rounded 

 at the sutural angle ; coarsely, interruptedly striato-punctate, the interstices 



