DYNASTIN/E 205 



two teeth, so far as apparent without complete dissection. This, 

 in addition to the different habitus of the body, widely spaced 

 clypeal denticles and larger head, would seemingly warrant the 

 isolation of tumulosus as a separate subgenus, which I have sug- 

 gested under the above name. The habitat of tumulosus was left 

 in doubt by Burmeister and possibly there may be several allied 

 species now known under that name. The following seems to be 

 tumulosus Burm., as interpreted by Bates: 



Form elongate-oval, strongly convex, polished, black, with very feeble 

 piceous tinge, the legs and under surface paler, castaneous, the 

 abdomen darker brown; head about three-sevenths as wide as the 

 prothorax, sparsely rugose laterally, smoother medially and punc- 

 tureless basally; carina almost completely and broadly interrupted 

 medially, the two parts angularly prominent and attaining the sides; 

 clypeus of the usual form in the preceding subgenus but with the apex 

 about half as wide as the base, arcuato-truncate, each angle with an 

 erect spiniform tooth, the surface shining, very sparsely, transversely 

 rugulose; mentum convex, coarsely punctate and setose throughout; 

 prothorax three-fifths wider than long, the sides just visibly con- 

 verging and subsinuate from the broadly rounded basal angles to 

 slightly beyond the middle, there broadly rounded and then oblique 

 to the apex; punctures very small and extremely sparse throughout, 

 the anterior pit very small, subrugulose, the tubercle not elevated 

 but forming a small posterior lobe of the flattened apical margin; 

 scutellum broadly ogival, nearly smooth, having a minute subcentral 

 fovea; elytra about a fourth longer than wide, barely at all wider 

 than the prothorax, circularly rounded in about apical two-fifths, 

 the sides faintly sinuate before the middle for some distance as 

 usual; punctures very moderate, widely spaced in the usual series, 

 which are slightly impressed, broadly confused toward the sides 

 behind about the middle, excepting the usual submarginal double 

 series of very fine regular punctures; pygidium relatively rather 

 small in size, black, shining, strongly, sparsely and rather irregularly 

 punctured throughout, more closely at the lateral ends; hind tibiae 

 equal in length to the femora, moderately stout and flaring; last 

 abdominal segment of the female sparingly punctate; post-coxal 

 process of the prosternum with the apex more sparsely punctate and 

 setose than usual in the preceding subgenus. Length ( 9 ) IQ-5 mm.; 

 width 10.0 mm. Mexico? [Heteronydms tumulosus Burm.] 



tumulosus Burm. 



Under the original description of this species its habitat is said 

 to be " Nord-America (Siid-Carolina) und Westindien (St. Domin- 

 go)." Bates records it from Mexico (Vera Cruz), British Honduras 

 and Colombia. The native country of the specimen described 

 above, which was received from a European dealer, is transcribed 



