40 



Body obconic, rather depressed, moderately shining, testaceous, sparingly clothed 



with sliort goldt-n hair. 

 Head small, prcjdmod in front; eyes large and idack, not prominent; antennae 



large, robust, bright yellow. 

 Thorajc short, transverse, rather dilated towards the base, finely alutaceous, sides 



much rounded and margined, basal margin nearly straight, with the angles 



obtuse. 

 Scutdlum large, rounded, and punctured. 

 Elytra long, not broader, but more than twice longer than the head and thorax, 



widest at the shoulders, attenuated posteriorly, deeply and rugosely punctured, 



sutural stria very deep, sides nearly straight and broadly margined, extremities 



much rounded. 

 Abdomen with the pygidium exposed, testaceous. 

 Legs robust, bright yellow. 

 Under i^rts testaceous. 

 Habitat Central America ; found near Capetillo, Guatemala, by Mr. Cliampion. 



Tribe II. — Saciina. 



This tribe contains a greater number of species than either of the others, 

 distinguished chiefly by their small narrow head, and by the peculiar form of their 

 palpi. They may also, with but few exceptions, be recognized by their elongate 

 oval shape, pubescent surface, and great convexity of their under side. 



The four genera at present known may be distinguished from each other by 

 the following characters, viz. : — 



Antcnum 11-jointed ... ... ... Sacium. 



,, 10-jointed 

 Thorax with tlic posterior angles not produced. 



,, moderate; maxillary palpi narrow and elongate ... ... Arthrolips. 



,, very small ; maxillary pal])! very broad, patelliform ... Meioderus. 



,, with the posterior angles produced ... ... ... ... Meizoderus. 



SACIUM. PI. I., 1). 



Sacium, Le Conte, Proc. Ac. N. Sci. Philad. vi. 1-12, 18o'2. 

 Clypcaster, Latreille. 

 Coryloplius, p. Erichs. 

 Cossyphits, 2). Gyll. 



Corpus elongatum, ovale vel oblongum, plus minusve pilosum ; subtus convexum. 

 Caput minutum, angustum, dci>Ianatuni, ore promincnti, parte gulari minuta, 



deplanatii ; oculis parvis, baud prominentibus ; totum sub pronoto occultum. 

 Antennce (PI. 1., D, tig. 7) modicic, siepe breves, 11-artieuIatffi, 1 longo, incrassato, 



valde recurvato ; 2 primo multo breviori, incrassato ; 3-6 brevibus, plerumque 



graeilibus, raro transversis ; 7 sa^pe incrassato ; 8 jjarvo, transverso ; 9-11 



valde incrassatis, clavam foliatam formantibus. 

 Palpi ma.rillarcs (PI. I., I), fig. 5, w) sat lougi, robusti, 4-articulati ; 1 parvo, 



gracili ; 2 magno, subpyriformi, antice e.xcavato ; 3 subquadrato, secundo 



breviori ; 4 elongato, obtuse conico. 

 Paljii labialcs (PI. I., D, fig. (5, m) brevissimi, latissimi, triarticulati ; 1 minute; 



2 perbrevi, latissimo, cyathiformi ; 3 ceteris multo majori, subquadrato, 



margine anteriori leviter concavatu, et minute denticulatii. 

 Labriun (PI. I., D, fig. 3) somiovale, ad apicem emarginatum. 



