18T5.] 205 



TiiiooNUiiua Edwarusi, n. sp. 



Casfaneo-piceus, nitldus; tliorace suh-q^uadrato, minus dense et minus 

 fortiter pnnctato, hasi truncato, angulis posterioribus recfis ; clytris 

 fovtitcr regularitcrqxie stnato-punctatis ; ahdomine suhtiliter punctato, 

 apice Icevigato. Long. corp. 4 mm. 



Head sparingly and indistinctly punctured, with a transvcrso impression between 

 the insertion of the autenna\ Thorax rather broader than long, straight at the sides, 

 but narrowed near the front angles ; the punctuation of its upper suriace is irrcgidarj 

 it being coarse at the base, and especially distinct and coarse in the two basal im- 

 pressions, it is fine on the disc and wanting at the front angles. It has a longitudinal 

 channel abbreviated in front and behind. Elytra about one and a half times the 

 length of the thorax, extremely strongly and regularly punctured ; the punctures 

 arranged in very distinct and regvdar rows, but not placed in grooves, each puncture 

 is very distinct and well defined, the interstices being narrow, there are seven of 

 these rows ; the seventh is entire, and outside it is a very abbreviated eighth row. 

 The hind-body is very sparingly and finely punctured, the apical segments indeed are 

 very nearly impunctate. 



This species is clearly closely allied to T. ccelatus, Lee, but I 

 believe the punctuation of its thorax and hind-body must be very much 

 finer than in that species. 



I have very much pleasure in naming this insect in honour o£ 

 Henry Edwards, Esq., of San Francisco, to whom I am indebted for 

 this, as also the other species here described. His liberality has 

 supplied me with twenty specimens of T. rugosus, three of T. Edwardsi, 

 and two of T. Lecontus. 



Triqonueus Lecontus, n. sp. 



Nitidus, drpressus, piceo-rufus, elgtris magis rufescentihus ; tliorace 

 transversim suh-(iiiadralo, basi truncato, angulis jyosterioribus reciis ; 

 elylris reguJariter punctato-striatis, punctis minus discretis, interstitiis 

 august is ; abdomine minus crebre sat fortiter punctato. 



Long. corp. li mm. 



This species much resembles T. Edwardsi, but is broader and 

 rather more depressed ; its thorax is a little more strongly [)uiuiurcd, 

 and the dorsal channel less distinct; the hind-body is more distinctly 

 punctured. The sculpture of the elytra, however, readily distinguishes 

 the two species ; the punctures in T. Lecontus being placed in grooves, 

 and the longitudinal interstices between the })un(tures are indistinct 

 and not elevated. 



According to Leconte's description of T. Crotchii, this species 

 must be tdosely allied thereto ; '\n T. Crotchii, Leconte says the elytra 



