AMERICAN COLEOPTERA. 119 



abdominal process. Femora moderate and nearly equal. Anterior tibife gradually 

 broader to tip, grooved on the inner side near the tip, the spurs nearly on the 

 same line transversely. Tarsi moderate in length, the first joint longer, the fourth 

 not emarginate. 



The tarsi do not differ in the sexes. 



As in the other tribes of the present sub-family which contain but 

 one or two genera, the description of the present is made with con- 

 siderable detail drawn entirely from the typical genus, the only one 

 known to me in nature. In the books Enceladus is placed with Siagona, 

 a genus with which it seems to have very little relation except the large 

 mentum without suture at base. Schioedte and Chaudoir have been 

 deceived by a line of sculpture and have placed the Siagonides as a 

 whole in the present sub-family. I do not find the mesosternal epimera 

 attaining the coxae in Siagona while they do very plainly in Enceladus. 

 Another character used by Schioedte is of very doubtful utility " antennse 

 scrobicuiis recipiendse" the antennal grooves or scrobes being merely the 

 result of the dilated genal plates which are variable within generic limits, 

 and have already been made use of by me in separating the species of 

 CycTirus in subgeneric sections. 



Not knowing Luperca"^ in nature I am unable to say whether it 

 enters the present tribe or not, should it be as closely allied to Enceladus 

 as stated by Lacordaire the two genera form a very distinct type equal in 

 value to the Metriini or Promecognathini and with its affinities but little 

 better marked. Lacordaire perceives relationships with the Oza^nides, 

 Galeritides and Scaritides, but these entirely escape me except as to the 

 last of these tribes, to which there is but little resemblance except in 

 external form. I believe however it is better placed near the Scaritini 

 than anywhere else in the series. 



Enceladus occurs in Colombia and Gruiana, Luperco in the East Indies. 



Tribe XV. -Scaritini. 



Antennae moderate in length, inserted under a frontal plate with a variable 

 number of glabrous joints. Eyes comparatively small very finely granulate and 

 distant from the buccal opening (Scarites), or normally convex and granulate and 

 not distant from the mouth (Clivinse). Head variable in form and with one 

 (Scarites) or two (Clivinse) supra-orbital setae. Labrum short, emarginate or 

 sinuate. Mandibles at least moderately prominent, without setigerous puncture, 

 simple or dentate. Maxillse with the inner lobe often obtuse at tip, in some 

 genera normally hooked, ciliate or spinulose within, outer lobe biarticulate the 

 terminal joint usually shorter, palpi variable in form. Mentum emarginate, often 

 deeply, the tooth variable in size, epilobes narrow, but very wide in Schizogenius. 



* Chaudoir replaces this name by Holoscelis Chd. For other remarks which 

 may properly be read as a supplement to the present tribe, the reader is referred 

 to the Siaffonini. 



