404 Mr. n. W. Bates on Ceramhycidce 



Genus Cosmisoma. 



Serville, Ann. Soc. Ent. Fr. 1834, p. 19 j Lacord. Gen. 

 ix. 112. 



1. Cosmisoma Diana, n. sp. 



Ceramhyx Ammiralis, Lin. Syst. Nat. (ed. xii) ii. 625 (?) . 



Robustum, lineare, planum, nigrum ; tliorace antice et 

 postice constricto, medio lateribus tumido, utrinque vitta 

 lata leete argentea; elytris macula humerali clare fulvo, 

 vitta lata pone medium Ifete argentea ; antennis articulis 

 3io et 4to apice infra nigro-penicillatis, 5to scopa magna 

 nigra, 6to scopa minore alba; corpore subtus argenteo- 

 tomentoso. 



Long. 6^-8 lin. S ? • 



This superb insect was referred by White to the G. 

 Ammiralis of Linnreus ; but the original description in 

 the Systema Natura3 does not at all agree with the Ama- 

 zonian specimens. It is true that Linnaeus described it 

 from a figure only, sent from Surinam by Dr. L'Ammiral, 

 and this may not have been accurate. So palpable a 

 difference, however, as " Thoracis latera rufa" in 

 L'Ammiral's insect, cannot be assumed to be an inaccuraey , 

 and in the absence of Surinam specimens, the present 

 species must be regarded as distinct. The C. formo- 

 sum (Blanchard, in D'Orbigny's Voyage), from Santa 

 Cruz, in Bolivia, has also been assumed to belong to the 

 same species, although both in the description and figure 

 the sides of the thorax, and the humeral spots and belt 

 of the elytra, are given as " yellow." 



Ilah. — Ega. On flowers of Myrtacece ; a large number 

 of examples offering no variation. 



2. Cosmisoma fasciculatum. 



Saperda fasciculata, Oliv. Ent. No. Q8, p. 14, pi. i. f. 3. 



Cosmisoma Leprieurii, Buquet, Guer. Icon. R. A. p. 231. 



Minus robustum, elongatum, depressum, nigrum ; 

 thorace nitido, antice et postice constricto, medio tumido 



