•f. 



82 EEOTTLID^:, 



very much perplexed me as to its true position, the characters being all very negative 

 or generalized. Four specimens were captured by Hoge and one by Forrer. 



SOEOTHER. 



Characteres plerumque sicut Hcematochitone. Corpus oblongum, supra omnino crebre, infra obsoletius punc- 

 tatum. Antennae breviusculae, validae. Palpi labiales articulo ultimo subquadrato. Lineae abdominales 

 distinctae. Metasternum punctatum. Abdomen pedesque parce pruinosi. Femora compressa, tibiae leviter 

 sinuatae, extus et intus carinata?. 



l. Scaeother carbonarius. (Tab. V. fig. 5.) 



Oblongus, parum convexus, opacus vix nitidus, niger ; capite prothoraceque creberrime sat fortiter punctatis, 

 hoc transverso, convexo, angulis antieis depressis, acutis, tenuissime marginatis ; elytris obsolete crebre 

 minute punctatis, leviter punctato-striatis. Long. 5 millim. 



Bab. Mexico, Toluca (Edge). 



A very obscure-looking insect, which from its opaque punctured surface and black 

 colour might easily be taken for a Tenebrionid. 



In structural characters 8. carbonarius seems to agree very nearly with the insect 

 described above as Hcematochiton elateroides ; but the presence of abdominal lines, the 

 more robust build, and the more convex pronotum, in addition to the very different 

 sculpture, are sufficient indications of its being generically distinct from Hcematochiton. 

 In the single specimen found by Hoge the prothorax is very obsoletely keeled in the 

 middle, but so faintly as only to be noticed by turning the insect about. The scutellum 

 is thickly punctulate like the rest of the upper surface. The tibiae are very slightly 

 enlarged towards the apex. The base of the thorax is sinuate, with an ill-defined fossa 

 on each side of the median lobe, and a few larger punctures along the margin at that 

 part ; the middle of the front cannot be termed " margined," but is deflexed. 



Subfam. EMOTYLIBES. 



The genera which are grouped in this subfamily are not so homogeneous as those of 

 the preceding group ; but they agree in having the inner lobe of the maxillae bidentate, 

 that is to say, with two stout hooks near their apex. With the exception of one genus, 

 viz. Aulacochilus, they are all peculiar to the New World. The more typical genera 

 (e. g. Erotylus, Zonarius, Homoiotelus) have long legs and antennae, and the elytra are 

 frequently elevated in a pyramidal manner or even produced into a spine. 



1. Eyes coarsely faceted. 

 SCAPHENGIS. 



Corpus oblongum, postice ovatum et gibbosum. Oculi fortiter granulati. Antennae longae, leviter pubescentes, 

 articulo tertio quam quartus vix longiore, articulis tertio ad octavum fusiformibus, clava laxe articulata. 

 Palpi maxillares articulo ultimo leviter securiformi. Epistomate punctato. Pronotum subquadratum, 

 antice recte truncatum, angulis anterioribus parum prominentibus, basi immarginata, tenuiter plicata. 



