50 



INSECTS OF SAMOA. 



A T 



38. Colydodes denudatus, sp.n. (Text-fig. 5). 



Niger, nitidus, pedibus antennisque rufescentibus ; nudus, subcylindricus, 

 angustus, pronoto quam latitudinem paulo longiori, lateribus fere rectis, antror- 

 sum leviter divergentibus, angulis anticis prominentibus, posticis rectis, basi 



arcuato, disco utrinque longitudinaliter 

 elevato, for titer punctato, antice pro- 

 ducto, longe bilobato, lobis rotundatis, 

 minute setosis, ad capitis marginem anti- 

 ciim attingentibus ; elytris grosse seriato- 

 punctatis, hmneris paulo productis, fere 

 inquinatis ; corpore subtus fortiter liaud 

 crebre jjunctato, segmento ultimo ventrali 

 jorofunde arcuatim impresso. 



Long. 3-5 mm. ; lat. max. 0-75 mm. 

 Upolu I. : Apia, Nov. 1924. 

 Savaii I, : Lower forest, 1000-2000 

 ft., Safune, May (Bryan). 



A single specimen was found in each 

 island. 



This is a small and very pecuhar species, differing from all its allies by the 

 absence of the fine bristly setae with which they are clothed. These are here 

 represented only by a few minute hairs upon the two prothoracic processes. 

 The pronotum is coarsely punctured, with a smooth median fine which dilates 

 anteriorly into a flat, oval, drumlike .area, which extends forward considerably 

 in front of the anterior angles. On either side of the flat median area the 

 surface is elevated, and the production of these raised parts forms a pair of 

 strong dorsal horns extending forward as far as the front margin of the head. 

 The sides are nearly straight, but diverge slightly to the prominent front angles. 

 The elytra are 2^ times as long as the prothorax from base to front angles, and 

 coarsely pitted in regular longitudinal rows. The basal margin is concave, in 

 correspondence with the rounded base of the pronotum, and the shoulders 

 form slightly hooked prominences fitting into an emargination of each hind 

 angle of the thorax. 



Text-fig. 5. 

 sp. nov. ; 



— Colydodes deniulatiis, 

 A, lateral view of the 



anterior part. 



