438 (62) Mr. G. R. Crotch's Revision of 



Mycotretus maculatus. 



Erotylus maculatus, Oliv. Enc. Meth. vi. 436 (1791). 

 Mycotretus ? maczdatus, Lac. Erot. 192. 



. Jigiiratus, Lac. Erot. 159. 



Cayenne, Columbia, Para (Bates). 



Interstices of elytra very sparingly punctured ; coxal lines 

 present. Antennee with a 4-jointecl club, joints short, adpreased. 



Hycotretus mutabilis, sp. n. 



M. maculato simillimus, sed latior, colore rufo-fulvo, thorace- 

 que brevicre distinctus. L. 4 lin. 



Ega Para (Bates). 



This is very close to M. mac^datus, but is I tbink distinct ; the 

 markings on the thoi-ax ai-e the same, except that the basal pair are 

 much more oblique ; the variations are numerous, the apical pair 

 united, the basal pair united into a triangular spot, the discoidal 

 one absent, kc. In the elytra the basal fascia is never divided 

 as in M. maculatus, but sometimes reaches the base, though not 

 the external margin. In one specimen {M. tricinctus), which 

 may be distinct, there is a third supplementary subapical fascia. 

 Sides of the raetasternum very sparingly punctate. 



Mycotretus basalis, sp. n. 



Oblongo-ovatus, brevis, hate fulvus, antennis nigris ; capite 

 thoraceque puuctulatis, illo puncto verticali nigro, hoc brevi, 

 tenuissimo nigro-marginato, punctis 2 anticis, 1 utrinque discoi- 

 dali, maculaque basali transversa, nigris; elytris tenue punctato- 

 striatis, interstitiis vix punctulatis, tertia basali nigra, epipleuris 

 flavis, corpore subtus subla3vi. L. 3h lin. 



Ega (Bates). 



Allied to M. maculatus, but much smaller. 



Mycotretus cinctiger, sp. n. 



Oblongo-ovatus, postice paulo acuminatus rufotestaceus, anten- 

 nis nigris (basi rufis) ; capite thoraceque crebi'e visibiliter punctu- 

 latis, hoc lateribus subrectis, punctis 4 transverse positis in disco, 

 basi paulo infuscato ; scutello rufo ; elytris punctato-striatis, 

 interstitiis siibtiliter parrce punctulatis, alutaceis, fascia lata com- 

 niuni basali nigra, nee marginem nee basin attingente. L. 3 lin. 



Santarem (Bates). 



Mycotretus marginicollis. 



Mycotretus marginicollis, Lac. Erot. 159. 



Brazil. 



Coxal lines present ; elytra liardly punctate. 



