Exotic Coleopterous Insects. 255 
racis marginem anticum productum fere absconditum : oculi mag- 
ni, laterales: antennas 11-articulatae, corporis fere longitudine, in- 
ter partem inferiorem oculorum insertae, articulo Imo ovali j 2do 
minuto ; 8vis proximis, ramum elongatum, compressum, singulatim 
emittentibus ; 11 mo elongate, compressor labrum parvum, trans- 
versum,angulisanticislateralibusrotundatis,lobominuto, triangular!, 
membranaceo, in medio instructum : mandibulw validae, corneae, acu- 
tae, curvatae, dente acuto infra apicem internum ; extus pilosis : 
maxillce membranacese, lobis duobus instructs, lobo externo magno, 
et in quatuor lilamenta pilosa et in longitudine decrescentia diviso, 
lobo interno gracili piloso, setisque decumbentibus, in medio in- 
duto : palpi maxillares, breves, crassi, 4-articulati, pilosi, articulo 
Imo brevi, 2do et 4to ejusdem longitudinis, hoc elongate- ovato, 
apice subtruncato : menlum brevissimum, coriaceum, labrum in fila- 
mentis 4 gracilibus, quorum intermedia longiora et pilosa, divisum ; 
palpi labiales breves, crassi, 4 articulati, articulo 2do brevissimo ; 
3tio et 4to subaequalibus, hoc elongate, apice subtruncato : tho- 
rax semicircularis, margine antico deflexo, et supra caput quasi 
cucullato ; angulis posticis subacutis, et ad basin elytrorum arete 
applicatis, margineque postico in medio paulo producto : elytra ob- 
longo-ovalia, convexa ; scutellum parvum, subrotundatum : prosternum 
simplex, inter pedes anticos haud protrusum, pedes breves, graciles, 
tarsis 5-articulatis, articulo 3tio bilobo, 4to minutissimo versus ba- 
sin articuli praecedentis insito, 5 to elongate, pulvillis nullis. 
This is a very interesting genus, which, if we were to admit the 
tarsal system in an unlimited manner as our guide in the distribution 
of the Coleoptera, it would be necessary to place in the section Te- 
tramera, with some species of which, as the Galerucidse, it has in- 
deed considerable analogy. Its chief affinity is however, Atopa, 
with which it agrees in several particulars, but the structure of the 
tarsi and antennas remove it from that genus, and indeed from the 
little group in which Atopa is placed by M. le Comte de Castelneau 
in his Memoir upon the Rhipiceridae, in which he has given the 
character of antennae not branched as that of the Atopae. The 
structure of the lower jaws and lower lip is very beautiful, and Mr 
Curtis has represented a somewhat similar structure in Atopa, whilst 
De Geer has figured the maxillae of Leptura 4-fasciata, (Memoires, 
Vol. v. pi. 4, fig. 13,) which very closely resembles that of Cladotoma, 
and which De Geer considers serviceable in collecting the honey of 
flowers. 
Sp. 1. CLADOTOMA OVALTS. (Fig. 3.) 
Fusca, elytris fulvis, basi et thorace obscurioribus, sutura albida. 
