Genera and Species of Coleoptera. 123 



ec'cond minute, tln> third lon^'-est, the rest more or less moniliform and 

 beeomiiifx «rradiiully thicker upwards. E3X'S lateral, small, round. 

 Maxillary palpi strongly securiform, the labial very short Jind thick. 

 Prothorax narrowi'r than the head, much contracted liehind, Scu- 

 tellum none, l^lytra connate, veiy convex, broadly elliptical. Legs 

 moderate; anterior coxa) globose, not contiguous; tibiae unarmed, 

 hairy at the base internally ; tarsi short, thick, hairy beneath, the basal 

 joint longer than the second, the penultimate bilobed. Prosternum 

 produced, rounded posteriorly, and remote from the mesosternum. 



An examination of the mouth might throw some light on the 

 affinities of this very curious little insect ; but as the only specimen 

 I have seen belongs to the British Museum, and moreover is not in 

 very good condition, this cannot be done at present. In habit it 

 resembles the Anthicidae, but the globose anterior coxae separate it 

 from that family ; the bilobed tarsi, an uniLsual character amongst 

 the Tenebrionida3, suggest an analogy, or perhaps an affinity, with 

 Phyinatodes and Phohelius, It is one of the many important cap- 

 tures of Mr. Bates in the valley of the Amazons ; and as that gen- 

 tleman is preparing a series of papers on some of the insects of his 

 extensive collections, it is to be hoped that this and many other 

 curious forms which he possesses will be at no distant date more 

 amply illustrated. 



ChcBtyllus anthicoides. (PI. VI. fig. 8.) 



C. niger, nitidus ; prothorace elytrisque tuberculatis, tuberculis setigeris ; 

 tarsis paUidioribus. 



Ilab. Brazil (Ega). 



Black, shining; head coareely punctured, with scattered, erect, 

 setulose hairs, a semichcular groove between the antennary orbits; 

 prothorax and elytra covered with large tubercular elevations, arranged 

 in rows on the latter, each of which bears a long, erect, setose hau- ; 

 tarsi and base of the tibiae internally with pale silky hairs ; labial and 

 maxiUary palpi at the base pale ferruginous ; antennae setigerous, as 

 long as the head and prothorax together. Length 2 lines. 



DiFSACONiA [Tenebrionidae]. 



Head small, rather narrow and elongate below the eyes, deeply inserted 

 in the prothorax. Eyes transverse, undivided. Antenna rather short, 

 submonilifonn, slightly hairy, the basal joint incrassated, the second 

 very short, the third longest, the remainder gi'adually decreasing in 

 length, but becoming broader and ti'ansverse, to the ninth and tenth, 

 the eleventh subovate. Labrum rounded anteriorly. Maxillary palpi 

 rather long, claviform, the last joint large, ovate, truncate ; the labial 

 very small ; external maxillary lobe broad, strongly ciliated. Mentum 



