BEACHYS.— LIUS. 135 



gradually narrowed at the apex. It is at once distinguished from all the preceding 

 species by the absence of the lateral costa to the elytra. The head and thorax are very 

 sparsely pubescent, but there are two small spots at the base above the scutellum. 

 The elytra are closely and finely punctured, except an elongate ovate space on the 

 suture before the middle, and a rather broad fascia behind the middle ; the short pale 

 grey pubescence is distributed over the punctured surface, but does not form any very 

 distinct markings ; before the apex, however, there is a well-defined slightly oblique 

 band, which does not quite reach the suture, and there is a vague spot at the apex ; 

 each elytron has an oblong impression at some distance from the base, and two 

 elongate impressions behind the middle in the bare fascia. 



LIUS. 

 Lius, Deyrolle, Ann. Soc. Ent. Belg. viii. p. 219 (1863). 



The species hitherto recorded as belonging to this genus are all South American. 



1. Lius ares. 



Lius ares, Satmd. Ent. Monthly Mag. xiii. p. 49 (1876) \ 



Hab. British Honduras, K. Sarstoon (Blancaneaux) ; Panama, Bugaba 800 to 1500 

 feet, Volcan de Chiriqui 2000 to 6000 feet, Boquete 3500 feet, Caldera 1200 feet, Tole 

 (Champion). — Amazons, Santarem 1 , Ega 1 , Para 1 . 



I am unable to separate the specimens collected by Mr. Champion from the type of 

 L. ares. The head in the type is a trifle broader and a little more excavated ; but 

 without a series of specimens from Brazil I cannot venture to consider this a specific 

 difference. The Central-American examples vary slightly in width. Out of a series of 

 over fifty specimens only three have the head entirely blue, all the rest having the lower 

 part of the face aeneous as in the type of L. ares. The broader examples have the 

 apical segment of the abdomen gently emarginate in the middle, the margin furnished 

 with slight obtuse serrations, only visible under a microscope. The specimens with 

 the head blue are a little narrower than the others, and have the apical segment of the 

 abdomen narrower and without serrations. 



The majority of the specimens are blue, with shades of purple on the thorax ; one of 

 those from Bugaba and two from Volcan de Chiriqui are almost entirely purple. Five 

 examples from Boquete are a little larger than most of those from Volcan de Chiriqui, 

 and in these the purple colour prevails. 



2. Lius dissimilis. (Tab. VII. fig. 18.) 



Rufo-eupreus, nitidissimus ; tborace punctato ; elytris striato-punctatis, postice bi-impressis ; corpore subtus 



seneo-cupreo, anteanis pedibusque nigrescentibus. 

 Long. If lin. 



Hab. Guatemala, near the city 5000 feet (Champion). 



