various Central American Coleoptera. 147 
like the N.-American LZ. nitidus, Lec., the type of Hupactus, 
but may be separated from that species by the densely, very 
finely punctured ventral surface and the non-carinate vertex. 
*Hupactus nitescens, n. sp. 
Lioolius ovulum, Gorh., Biol. Centr.-Am., Coleopt. 1, 2, 
p. 205 (1883) (part.). 
9. Oblong-ovate, rather narrow, convex, very shining, castaneous, 
the suture and apical margin of the elytral and the metasternum 
slightly infuscate, glabrous. Head, thorax, and elytra sparsely, 
minutely punctate, the punctures on the elytra subseriately 
arranged on either side of a smooth space along the suture before 
the middle, the apical elytral margin explanate, leaving a broad 
shallow groove within; eyes extremely large; antennae with joints 
4-8 very small, short, alternately serrate, the club long, moderately 
broad, its apical two joints united rather longer than 9. Beneath 
shining, very sparsely, finely punctate; metasternum grooved, the 
notch in front deep. 
Length 1,%,, breadth 1 mm. 
Hab. Panama, Volean de Chiriqui, 3,000 feet (Champion). 
One specimen. More elongate and much more shining 
than EL. ovulum, the eyes extremely large, the apical two 
joints of the antennae relatively longer, the apical margin 
of the elytra explanate, the upper surface much more 
sparsely punctate. 
*Hupactus semirufus, n. sp. 
Oblong-ovate, convex, very shining, rufous, the elytra nigro- 
piceous or black, the metasternum and posterior coxae more or less 
infuscate; glabrous above, the ventral segments finely pubescent. 
Head, thorax, and elytra sparsely, very minutely punctate; elytra 
subparallel in their basal half, broadly hollowed along the outer 
margin from about the middle to the apex, and with moderately 
prominent humeri; head obsoletely carinate on the vertex; eyes 
very large; antennae with joints 3-8 minute, irregularly serrate, the 
club long, moderately broad, the apical two joints together rather 
longer than 9. Metasternum very sparsely and irregularly, the 
ventral segments densely, minutely (the first more sparsely so 
towards the sides) punctate, the third and fourth sutures double, 
the metasternal process broader than long. 
Length 24-23, breadth 12-13 mm. 
Hab. Mexico, Teapa in Tabasco (H. H. Smith). 
