BY THOMAS 0. SLOANE. 129 



Genus C H y l n u s, uom. uov. 

 Lychnus Putzeys. 



The name Lychnus was already in use when Putzeys proposed it in 1868; I 

 now suggest Chylnus (formed by a rearrangement of the lettera in Lychnus) to re- 

 place it. 



Chylnus ater Putzeys. 



{^= Lychnus striatuhis Bates, = L. stranrjulahis Bates.) 



1 have idcntifled a specimen in my eoUection as Lychnus ater Putz.. with 

 every likelihood of the identification being correct, seeing that a comparison with 

 specimens in the Howitt Coll. named "Mecodema tasmanicum Castelnau" snowed 

 it to be the same species; Putzeys in his "Revision" of 1873 notes that there were 

 liine specimens in the Castelnau Coll. under the name Mecodema tasmauicmn 

 — a cabinet name. I conclude that Chylnus ater Putzeys = Lychnus striatuhis 

 Bates, and that L. strangulatus Bates (numbered 3051 in the Simson Coll.) is a 

 larger and smoother form; specimens in the Simson Coll. (No. 3084). and also 

 taken by Jlessr-s. Carter and Lea at Wilmot and Waratah, evidently represent the 

 convex tliird species alluded to by Bates (Cist. Ent., 1878, p. 318), but I am 

 not prepared to distinguish it from Chylnus atei, nor can I separate Lychnus 

 strauyulatus Bates by any definite characters. The species seems a variable one 

 in size and appearance, the sides of the prothorax have one or two setae just 

 before the middle, and from two to six setae near the anterior angles. Length, 

 16 — 20, lireadth, 5.5 — 0.6 mm. One dwarfed specimen, 15.5 X -1.7 mm. 



Hab. — Launeestou, Denison Gorge, Ben Lomond, 4000 feet (Simson No. 

 3051); Zeehan (Simson), Wilmot, Waratah (Carter and Lea) [Simson, No. 

 3684]; Great Lake (Simson). 



Genus P e r c o ,s o :.[ a. 



The genus Percosoma is a distinct one characterised by head large, mandibles 

 long, decussate; antennae elongate, second joint longer than fourth; prothorax 

 plurisetose along sides, lateral border not attaining base; elytra with fifth inter- 

 stice punctate; mes-epimera wide; posterior tarsi a little compressed, fifth joint 

 narrow, vertical on sides (this character occurs also to a more marked degree in 

 some genera of Searitini, e.g., Scaraphites). 



Elytra sub-striate, interstices flat. Length, 25 — 27 mm. .. . carenoides White. 

 Elytra strongly striate, interstices convex on sides. Length, 24-35 mm. 



sulcipenue Bate?. 

 Percosoma cauenoides White. 



ffab.^Mount AA'^ellington (Simson, No. 2727). 



Percosoma sulcipenxk Bates. 



Jlah. — Denison Gorge, Wynyard (Simson, No. 3463); Cradle Mountain, 

 Waratah (Carter and Lea). 



Tribe Agonicini, trib. nov. 



I place between the tribes Broscini and Harpalini a new tribe which is re- 

 quired for two Tasmanian species in the Simson collection; the following will be 

 the definition of this tribe. 



Head with one sui)ra-orbitai puncture on carh side; mandibles long, decu.ssate; 

 serol)e of outer si>'e asetose. Antennae inserted under a latei'al ridge, slender; 



