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

 Scaphidomorphus bitseniatus. 



Scaphidomorphus hitceniatus, Lac. Erot. 486. 

 Bolivia. 



Scaphidomorphus Herbstii. 



Scaphidomorphus Herhstii, Lac. Erot. 486. 



crahronoides, Lac. Erot. 487. 



Chiquitos, Bolivia, Amazons (Bates). 



Differs from S. hitceniatus by the pale epipleurae. The bands 

 vary but are never denticulate as in S. hitceniatus. 



Scaphidomorphus Duponchelii. 



Erotylus Duponchelii, Chev. Col. Mex. ii. 4, 

 Scaphidomorphus — , Lac. Erot. 488. 

 Mexico. 



Var. tliorace nigro, lateribus anguste nigris, elytris macula 

 apical i obsoleta. 



Scaphidomorphus] xanthomelas. 



Scaphidomorphus xanthomelas, Crotch, Cist. Ent. 150. 

 Nicaragua (Janson), 



Scaphidomorphus undatus. 



Erotylus undatus, Fah. 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 prosternum 

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

 I have separated the following forms : 



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

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

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



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

 dots of the elytra forming a waved fascia, the apical sufiiision 

 extending to the 2nd fascia. 



