444 (68) Mr. G. R. Crotch's Revision of 



Mycotretus tricolor, sp. n. 



01)longo-ovatus, sat latiis, subdcpressns, Ipete rnfo-testaceiis, 

 elytris nigris, fascia subapicali albida; ca})ite thoraceqiie punctu- 

 latis, elytris temie punctatostriatis, interstitiis subtilissime punc- 

 tulatis, metasterno lateribus puiictulatis. L. 4| lin. Ega (Bates). 



The antennje are rather long, the club jouited and loose, almost 

 dentate within. 



Mycotretus dimidiatus, sp. n. 



Ovatus, niger, nitidixs, clypeo, labro, macula utrinque prope 

 oculos, antennis basi, tarsis, abdomineque ocliraceis ; prosterno 

 pectoreqiie obsolete rufo-signatis ; elytris dimidio basali late flavo, 

 punctato-striatis, interstitiis subtiliter punctulatis. L. 4 lin. 



Ega (Bates). 



This is less depressed than the preceding group of species. 

 Metastenium with the sides sparingly punctate. 



Mycotretus rhodosomus. 



Mycotretus rhodosomus, Lac. Erot. IGC. 

 Brazil. 



Depi'essed, opaque, antennal club 3-jointed, posterior tlbise 

 conspicuously incurved. 



Mycotretus flavomarginatus. 



Mycotretus fiavomarginattis, Lac. Erot. \51. 

 Rio Janeiro. 



Interstices very broad, hardly punctulate ; posterior coxal lines 

 absent. Allied to M. rhodosomus and with similar tibito. 



Mycotretus dorsofasciatus. 



Mycotretus dorsofasciatus, Lac. Erot. 173. 

 Brazil. 



Elytra with an opaline lustre, interstices finely transversely 

 wi'inkled ; body beneath very finely and sparingly pubescent. 



Mycotretus opalescens, sp. n. 



M. dorsofasciato proximus, capite postice nigricantc, thorace 

 punctis 4 discoidalibus (2 internis majoribxis) elytris fascia basali 

 [puncto subhumerali testaceo (alteraque pone medium) postice 

 indefinita] nigris. L. 2ilin. 



Santarem, Ega, S. Paulo (Bates). 



Finely })ubescent beneath. This is much more opalescent than 

 M. dorsofasciatus; the basal fascia is sometimes reduced to a black 

 lunule enclosing the shoulder, and the subapical one to a narrow 

 line. Accords with M. iielliciens, Kirsch, in coll. 



