404 Mr. H. W. Bates on Ceramhycidce 
Genus Cosmisoma. 
Serville, Ann. See. Ent. Fr. 1834, p. 19; Lacord. Gen. 
ix. 112. 
1. Cosmisoma Diana, n. sp. 
Geramhyx Ammiralis, Lin. Sjst. I^at. (ed. xii) ii. 625 (?) < 
Robustum, lineare, planum, nigrum; thorace antice et 
postice constricto, medio lateribus tumido, utrinque vitta 
lata la0te argentea; elytris macula bumerali dare fulvo, 
vitta lata pone medium Imte 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 Linnaeus ; but the original description in 
the Systema Naturae 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 
difierence, however, as Thoracis latera rufa^^ in 
L^AmmiraFs insect, cannot be assumed to be an inaccuracy, 
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.” 
Hah. — Ega. On flowers of Myrtacece; a large number 
of examples offering no variation. 
2. Cosmisoma fas ciculatum. 
Sajperda fasciculata, Oliv. Ent. No. 68, 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 
