Lamellicorn Beetles. 169 
longiores quam in preecedentibus, 10-articulatee, articulis tri- 
bus clave laxis intus elongato-productis, articulo 8vo majori, 
9no curvato. Prothorax simplex.  Pedes sublongi, tibize 
anticee extus serrulate apiceque bidentate. Tibie 4 postice 
in medio inermes. Ungues pedum omnium in medio dente 
parvo acuto armati. 
The type of this group completely proves the impossibility of 
limiting one family group in extensive tribes of insects by fixed 
characters, the curious structure of the antenne, and the inner 
lobe of the maxillze, materially receding from the Geotrupideous 
type; the arched exposed mandibles and labrum, curved mandi- 
bles, and toothed tarsal ungues, however, prove its near approx- 
imation to some of the preceding groups. The enlarged size of 
the first joint of the club of the antenne appears rather Geo- 
trupideous, whilst the concealed lobes of the labium are more 
Trogideous. The entire habit of the insect is, however, much 
more like some of the Geotrupide with 11-jointed antenne than 
Trox. 
Apalonychus Waterhousii, Westw. (Pl. XT. fig. 5.) 
A. fulvo-castaneus, nitidus, laevis; antennarum clava lutea, ely- 
tris tenue et irregulariter punctato-striatis, lateribus longe 
setosis. Long. corp. lin. 4. 
Habitat in Insula Cuba. 
In Mus. D. Waterhouse; [et nunc etiam nostro, sub nomine 
Trichops helvolus. D. Erichsonio amicissime transmissus. | 
Caput parte antica depressa; clypei lateribus parum marginatis. 
Caput et pronotum vage punctata, punctis minutis. Elytra 
punctatissima, punctis in strias numerosas parum regulares 
dispositis. Elytra et pronotum tenue marginata, pedes con- 
colores, longe setosi. Calcaria pedum posticorum breviores. 
Fam. TROGIDA. 
CryptTocEenius, Westw. 
(Pl. XII. fig. 4, and details.) 
Corpus supra planum, rugosum, setosum, thorace subrotundato, 
elytris angustiori, pedibus longis. Caput suborbiculatum, 
margine antico tuberculato, clypeo infero magno, antice trun- 
cato. Labrum magnum, crustaceum, transversum, angulis 
anticis rotundatis, medio marginis antici parum acuminato. 
