46 MEGISCHYRUS. 



Pselaphaciis rubricatus. 



Eroti/lus ruhricatus, Host. Kiif. viii, T. cxxxvii, f. 2. 



Fselnph.acus , Lac. Erot. 85. 



Cayenne, Amazons, Ecuador. 



Pselapliacns approximatiis, sp. n. 



Niger, nitidiis, capite punctulato; tliorace obsolete punctulato, 

 ])revi ; elytris sul»]jievibus, striato-punctatis, annulo liiniiorali 

 sanguineo intus caudato et per marginem ad fasciam sanguineani 

 subarciiatam pone medium continuato. L. G lin. 



Amazons (Bates). 



Pselaphacns Nicaraguse.* 



Pselaphacus NicaragiKe, Crotch, Cist. Eut. 142. 

 Nicaragua (Janso]i). 



Megischyrus. 



Crotch, Cist. Ent. 143 {tyi->. undatus, 01.). 



Megischyrus undatus. 



Erotylus urtdatus, Oliv. Enc. MHh. vi. 434 (1791). 



obloii'jus, Dup. Erot. 40. 



Ischyrus , Lac. Erot. 92. 



Cayenne. 



Megiscliyrus brasiliensis. 



Ischyrus brasiliensis, Lac. Erot. 91. 



Brazil. 



Closely allied to M. undatus, from which it ditXers by the 

 n)ore evidently punctate strice of the elytra; I am, however, in- 

 clined to consider it a variety, especially as M. Jiirinei varies in a 

 similar manner. 



Megischyrus Jurinei. 



Ischyrus Jnriuci, Lac. Erot. 94. 



fasciato-itentatus, Cucr. MSS. 



Bolivia. 



Allied to ]\f. hrasiliensis in structure. I have not seen a 

 specimen with th(! margins of the elytra red as described by Lacor- 

 daire, ])ut I have one of M. undatus without th(! red margin taken 

 by Bates; his si^ries of specime:is arc nearly intoi mediate l)etween 

 J/, undatus and M. J nriuei. 



