MITTILLA. 301 



Very nearly allied to M. triangularis, but with the head more rounded (not so 

 •straightly oblique behind the eyes) ; the thorax shorter compared to the head, and 

 more distinctly roundly narrowed in front ; and the second abdominal segment without 

 the triangular black mark. Head closely punctured, of a brassy-golden colour; the 

 hair long, sparse, and fuscous ; the antennal plates ferruginous ; the mandibles reddish- 

 black at the apex. Eyes moderately large, more rounded than in M. triangularis. The 

 basal half of the antenna? ferruginous, the apical half black. Thorax rather strongly 

 and closely punctured, sparsely covered with long dark fuscous hair ; the sides of the 

 mesonotum broadly, and the greater part of the median segment, black; the sides of 

 the thorax rounded and narrowed at the base and apex ; the median segment with a 

 gradually rounded slope; the tubercle blunt, pale yellow. Abdomen with the first 

 segment broader than long, finely punctured, covered with white hair, not dilated 

 towards the apex, the base depressed ; the second segment coarsely punctured, sparsely 

 covered with long fuscous hair, reddish, surrounded with black, the black again being 

 margined (except at the base) with silvery- white, except at the middle, where the 

 white is interrupted ; the other segments densely covered with golden hair. The legs 

 reddish, sparsely covered with white hairs; the tibial spines long and slender; the 

 metatarsal fringe pale fulvous. 



There is a keel on the vertex and front, but it is blunter and not so clearly marked 

 as in M. triangularis. In the type of coloration M. pantaleonw is not unlike 

 M. bugabensis ; but that species may be at once known from it by the plate on the 

 median segment. 

 / 



v 48. MutUla chiriquensis. (Tab. XIII. fig. 28, $ .) 



Long. 6*5 millim. $ . 



Hab. Panama, Volcan de Chiriqui 2500 to 4000 feet {Champion). 



Very nearly allied to M. bugabensis, but easily known from it by the absence of the 

 toothed plate from the top of the median segment. 



Ferruginous, the head golden ; the mesonotum bordered with fuscous ; a bifurcated 

 black irregular mark on the median segment ; the second abdominal segment black, 

 brownish at the apex, the base with two elongated silvery broad marks, the apex 

 silvery-white, with a small square black mark in the centre ; the other segments lined 

 with golden pubescence. The head punctured, but not strongly, much wider than the 

 thorax, sharply obliquely narrowed behind the eyes, which are large and reach to the 

 top; densely covered with long golden hair. The antennas thick, the scape with 

 fulvous hair, the flagellum glabrous. The thorax about twice the length of the head ; 

 the sides straight and not narrowed towards the apex; uniformly punctured all over 

 (including the mesopleurse) ; the hair sparse and fuscous; the median segment with a 

 gradually rounded slope to the apex. The first abdominal segment not dilated towards 

 the apex, longer than broad, depressed and toothed at the base, strongly punctured, 



