58 prionidjE. 



-1. Ceroctenus gagatinus. B.M. 



Cerambyx (Lissonotus) gagatinus, Germ. Ins. Sp. Nov. p. 504. 

 -Ceroctenus unicolor, Dej. Cat. p. 344. Chevr. Coll. 

 Hab. Brazil. 



2. Ceroctenus mixtus, n. s. B.M, 



C. fulvus, elytris margine postice et apice nigris ; fascia (saepe 

 obsoleta), mediana nigra, marginem non attingente, et ad 

 suturam graciliore ; antennis rufis, articulis 5 ultimis nigris ; 

 pedibus rufis. 



Fulvous ; elytra with the margin behind and the apex black. 

 In some specimens there is a black band about the middle, which 

 is widest towards the side, but does not reach the margin, and it- 

 spreads out towards the shoulder ; it is thinnest towards the su- 

 ture. Antennae rufous, the last five joints black ; legs rufous. 



Length 7i to 9 lines. 

 Hab. Brazil. 



3. Ceroctenus latifascia, n. s. B.M. 



C. nigerrimus, elytris fascia lata lutea postmediana, antennis 

 nigris, articulis 3, 4, 5, 6 et basi, fulvis ; tibiis quatuor ante- 

 rioribus fulvis. 



Deep shining black; elytra with three slight longitudinal costae, 

 and a wide yellow band behind the middle, the posterior and an- 

 terior margin somewhat waved. Antennas black, the third, fourth, 

 fifth, sixth and base of seventh joints fulvous ; the tibiae of two 

 anterior pairs of legs fulvous. 



Length 6 to 7 lines. 

 Hab. Brazil (Ent. Club). 



97. CALLOCTENUS. 



Calloctenus, White, Proc. Zool. Soc. Lond. 1850. 



1. Calloctenus pulcher. B.M. 



Calloctenus pulcher, White, Proc. Zool. Sgc. 1850, Annul. 13. f. 6. 

 Hab. Venezuela (Coll. Dyson). 



Calloctenus pulcher, var. nigripennis. 



In the Museum Collection there is a specimen of the female 

 considerably larger than the two other specimens ; the elytra are 

 deep black, with greyish reflections, caused by the deeply punc- 

 tured spaces between the costae. 



Hab. Venezuela. 



