new Species of ll\stcY'\d2e. 351 



short, bistriate, striae divergent before and behind, anterior 

 lobe transverse, with the rim flavous ; the raesosternum, 

 lateral stria fine, interrupted anteriorly, transverse stria evenly 

 crenulato and strai<>;ht. 



T. opimus and T. bomba, Mars., are the largest species of 

 7 r iba Uus known. 



Hab. Martapura, S.E. Borneo {Doherty^ 1891). 



Note. — Since I formed the genus Idolia TAnn. & Mag. 

 Nat. Hist. 1885, xvi. p. 214) nearly a dozen species have been 

 described, and it seems likely this number will be greatly 

 increased. Some of the species exhibit the sternal sutures, 

 and some possess specific characters similar to certain species 

 of TribaUus, so that I think now the two genera should be 

 placed together. 



Trypeticus Dohertyi, Lew., Ent. Mon. Mag. 2nd ser. 

 vol. ii. p. 186. 



There are three male examples (measuring A\ millim.) 

 in Mr. Fry's collection which I think are small specimens of 

 this species. All the differences I see in them relate to size 

 and to the want of the two thoracic elevations behind the ridge 

 near the neck. That this should be the case only corre- 

 sponds to what we see throughout the Coleoptera, that 

 sexual differences are more or less obliterated in small indi- 

 viduals. There are a few genera in the Histeridee in which it 

 is quite as important for a describer to know both the sexes 

 as it is in the Lucanid^e, but these genera are limited in number. 

 The anterior angles of the thorax in the male of T. Dohertyi 

 are rectangular, and almost so in the female also. 



Trypeticus nemorivagus^ sp. n. 



Cylindricus, parum robustus, niger, nitidus ; pronoto angulis 

 anticis haud rectangnlatis ; prosterno rugoso-punctato, margine 

 lateral! valido. 



L. 3| mill. 



snout 



Cylindrical, rather robust, black and shining ; the male, 



out with shallow punctures, triangulai-, flat, margined with 



a carina, the forehead irregularly punctured between the eyes 

 and microscopically strigose; the female snout is impressed, 

 not carinate, with two very small and not very distinct 

 tubercles at the apex ; the thorax in the male parallel laterally, 

 anterior angles rounded off, impressed near the eyes, rather 

 densely punctured anteriorly, punctures on the disk and 



