ACALOPHENA.—LITHOCAON. 555 
1. Acalophena angularis. (Tab. XIV. fig. 13.) 
Lithocharis angularis, Er. Gen. et Spec. Staph. p. 614 '. 
Hab. Mexico 1, Cerro de Plumas (Hége), Tuxtla (Sallé), Jalapa (Mohr); Guatemaua, 
near the city, Capetillo, Tactic (Champion); Nicaragua, Chontales (Janson).—Sovuta 
America, Colombia', Venezuela (SaJ/é). 
Our figure is taken from the example found at Jalapa by Mr. Flohr. 
LITHOCAON. 
Corpus elongatum, angustulum, politum. Tarsis anterioribus sat fortiter dilatatis. Labrum per latum, breve, 
anterius fere subrectum, medio incisione parva. Mandibule modice elongate, unidentate. Caput collo 
lato. Tarsi posteriores articulo basali modice elongato, quam secundus longiore, quam ultimus breviore. 
This distinct genus has the aspect of a Lathrobium, but I think is more nearly allied 
to the Lithocharis division of the Pederina. The penultimate joint of the maxillary 
palpus is broad, with a truncate extremity; and the short terminal joint is also very 
broad. ‘The moderately long mandibles have a single long tooth in the middle. The 
broad head is truncate behind, and has an abrupt but broad neck. ‘The prosternal 
pieces are largely developed, the process above the cox being large, and spreading 
out laterally so that the prolonged side pieces overlap it. The hind tarsi are rather 
slender, the joints one to four decreasing gradually in length; the terminal joint about 
as long as the first, second, and third together. 
There are two species, as yet undescribed, of the genus from Rio Janeiro in my 
collection. 
1. Lithocaon sparsus. (Tab. XIV. fig. 14.) 
Angustulus, elongatus, nitidus, rufo-piceus, antennis pedibusque testaceis, elytris rufescentibus apice fusco ; 
capite subquadrato, fortiter punctato, medio ixvigato; prothorace sat fortiter punctato, area longitudinali 
impunctata. 
Long. 54 millim. 
Hab. Panama, Volcan de Chiriqui 2000 to 3000 feet (Champion). 
Antenne small, the second and third joints about equal, the tenth about as long 
as broad. Head rather short, the eyes a little prominent; on each side rather closely and 
very coarsely punctate, with a broad smooth space along the middle. Thorax longer 
than broad, a little narrowed behind, the base greatly rounded, the surface less coarsely 
and closely punctured than the head, the broad smooth space along the middle 
rather irregular. Elytra rather longer than the thorax, quite sparingly punctured, 
shining. Hind body only sparingly punctate, the penultimate segment a little infuscate 
across the middle. The male has an elongate parallel-sided excision of the last ventral 
segment. 
Five examples. Sandy banks of mountain streams (Champion). 
4 BB 2 
