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



Mycotretus maculatus. 



Frotylus maculatus, Oliv. Enc. Meth. vi. 43G (1791). 

 Mycotretus 7 maculatus, Lac. Erot. 192. 



Jiguratus, Lac. Erot. 159. 



Cayenne, Columbia, Para (Bates). 



Interstices of elytra very sparingly punctured ; coxal lines 

 present. Antennae with a 4-jointed club, joints short, adpressed. 



Mycotretus mutabilis, sp. n. 



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

 que brevicre distinctus. L. 4 lin. 



Ega Para (Bates). 



Tliis is very close to M. maculatus, but is I think distinct ; the 

 markings on the thorax 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, &c. In the elytra the basal fascia is never divided 

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

 the external margin. In one specimen (J/, tricinctus), which 

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

 Sides of the metasternum very sparingly punctate. 



Mycotretus basalis, sp. n. 



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

 thoraceque punctulatis, 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 sublsevi. L. 3| lin. 



Ega (Bates). 



Allied to M. macidatus, but much smaller. 



Mycotretus cinctiger, sp. n. 



Oblongo-ovatus, postice paulo acuminatus rufotestaceus, anten- 

 nis nigris (basi rufis) ; capite thoraceque crebre visibiliter punctu- 

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

 basi paulo infuscato ; scutello rufo; elytris i)unctato-striatis, 

 interstitiis subtiliter pa-rce punctulatis, alutaceis, fascia lata com- 

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



Santarem (Bates). 



Mycotretus marginicoUis. 



Mycotretus marginicollis, Lac. Erot. 159. 



Brazil. 



Coxal lines present ; elytra hardly punctate. 



