546 (170) Mr. G. R. Crotch's Revision of 

 Scaphidomorphus bitsBniatus. 



Scaphidomorphus hitmniatus, Lac. Erot. 486. 

 Bolivia. 



Scaphidomorphus Herbstii. 



Scaphidomorphus Herbstii, Lac. Erot. 486. 



■ crabronoides, Lac. Erot. 487. 



Chiquitos, Bolivia, Amazons (Bates). 



Differs from S. bitceniatus by the pale epipleurse. The bands 

 vary but are never denticulate as in *S'. bitceniatus. 



Scaphidomorphus Duponchelii. 



Erotylus Duj)onchelii, Chev. Col. Mex. ii. 4. 

 Scaphidomorphus — , Lac. Erot. 488. 

 Mexico. 



Var. thorace nigro, lateribus anguste nigris, elytris macula 

 apicali obsoleta. 



Scaphidomorphus] xanthomelas. 



Scaphidomorphus xanthomelas, Crotch, Cist. Ent. 150. 

 Nicaragua (Janson). 



Scaphidomorphus undatus. 



Erotylus undatus, Fab. Syst. El. ii. 8. 

 Scaphidomorphus — , Lac. Erot. 491. 

 Erotylus prceustus, Dup. Erot. 26, T. ii. f. 45. 

 Scaphidomorphus — , Lac. Erot. 490. 

 zigcena, Lac. Erot. 492. 



Cayenne, Amazons (Bates), Columbia, 



This species is perhaps the most variable of the group ; the 

 only constant characters I find beyond the smooth surface and 

 finely punctate-striate elytra, are the black dot on the vertex, the 

 testaceous under-side, with a small black spot on the pi'osternum 

 behind the coxee under the femora, and the more or less black tibiae. 

 I have separated the following foi-ms ; 



A. undatus. Thorace puncto antico et postico, uncoque utrin- 

 que nigris ; elytris basi maculis 3, fascia media, alteraque pone 

 medium undatis nigris, apice suffuso, tibiis basi nigris. L. 5 lin. 



Var. The hook on the thorax reduced to a point, the basal 

 dots of tlie elytra forming a waved fascia, the apical suffVision 

 extending to the 2nd fascia. 



