Exotic Coleopterous Bisects. 255 



racis marginem anticum productum fere ab.sconditum : dculi mag- 

 ni, laterales: antennae 11-articulatae, corporis fere longitudine, in- 

 ter partem inferiorem oculorum insertae, articulo lmo ovali ; 2do 

 minuto; 8vis proximis, ramum elongatum, compressum, singulatim 

 emittentibus ; 11 mo elongato, compresso: labrum parvurn, trans- 

 versum, angulisanticislateralibusrotundatis,lobo minuto, triangularis 

 membranaceo, in medio instructum : mandibular validae, corneee, acu- 

 ta^ curvatae, dente acuto infra apicem internum ; extus pilosis : 

 maxillae membranaceae, lobis duobus instructae, lobo externo magno^ 

 et in quatuor rilamenta pilosa et in longitudine decrescentia diviso, 

 lobo interno gracili piloso, setisque decumbentibus, in medio in- 

 duto : palpi maxillares, breves, crassi, 4-articulati, pilosi, articulo 

 lmo brevi, 2do et 4to ejusdem longitudinis, hoc elongato- ovato, 

 apice subtruncato : menium 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 elongato, 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 : presternum 

 simplex, inter pedes anticos haud protrusum, pedes breves, graciles, 

 tarsis 5- articulatis, articulo 3tio bilobo, 4to minutissimo versus ba- 

 sin articuli praecedentis insito, 5to elongato, 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 Galerucidae, it has in- 

 deed considerable analogy. Its chief affinity is however, Atopa, 

 with Avhich it agrees in several particulars, but the structure of the 

 tarsi and antennae 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 Rhipiceridsa, 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 ovalis. (Fig. 3.) 

 Fusca, elytris fulvis, basi et thorace obscurioribus^ stitura albida. 



