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tawny testaceous^ shining^ clothed with long pale hairs ; sides of 
breast and basal segments of abdomen black*. 
Forests of Obydos, Lower Amazons. 
Group Fogonocherince. 
Genus Prymnosis, nov. gen. 
Body elongate, plane above, and clothed with short, fine, erect 
hairs. Head small, depressed on the crown between the anten- 
niferous tubercles, prolonged some distance below the eyes, and 
contracted at the occiput behind the eyes. Antennae filiform, 
nearly twice the length of the body, and clothed throughout 
with fine, stiff hairs, longest on the underside of the joints ; the 
basal joint elongate, nearly as long as the third, the third a very 
little longer than the fourth, and the rest very slightly diminish- 
ing in length. Thorax oblong, and armed on each side with a 
stout, porrect and acute spine. Elytra plane above, shoulders 
armed with a short spine, tapering thence to the apex, which is 
truncated, with the external angles prolonged each into a spine. 
Legs moderately elongated, thighs slightly clavate, tarsal joints 
triangular, claws divergent. Mesosternum narrowed and ele- 
vated behind ; sockets of anterior coxje widely angular externally. 
Prymnosis bicus^m, n. sp. 
P. elongata, postice attenuata, supra plana, punctata, fusco-castanea, 
vertice, thorace et scutello linea dorsal! flava; elytris apice trun- 
* The following nevv^ species, sent from South Brazil by Mr, Squires, 
belong also to this genus : — 
Desmiphora ornata. Elongato-oblonga, fulvo-ochracea, nigro lineata et 
variegata. Caput grosse punctatum, fulvo hirsutum, vertice nigro 
bipenicillato. Antennse corpore breviores, robustse, hirsutse, dimidio 
basali rufo, apicali nigricante. Thorax fulvo-ochraceus, lateribus 
utrinque nigro triiineatis, disco postice brunneo; juxta marginem 
anticum penicillis tribus porrectis quarum una antica fusca, alteree 
duae posticse fulvo-ochraceee. Elytra grosse punctata, fulvo- 
ochracea, pone medium annulo communi nigro, fasciaque subapicali 
alba ; singulis cristis setosis parum elevatis, una prope basin, altera 
longe ante apicem. Corpus subtus fulvo villosum, pectore nigro. 
Pedes fulvo-testaeei. Long. 4i in. Hab. in Pao Janeiro, a Dom. 
Squires lecta. 
Desmiphora venosa. Elongata. Caput fuscum, fulvo hirtum, punctatum. 
Antennae robiistae, pilosae, fulvo-brimnete, articulis supra nigris. Tho- 
rax niger, nitidus, crebre foveolatus, lateribus fulvo plagiatis, dorso 
fusco bipenicillato. Elytris juxta basin et latera crebre foveolata, 
fusca, medio plana vix punctata, cinereo-brimnea, apice fusco inacu- 
lata ; singulis penicillis grossis fuscis, decuinbentibus, una prope basin, 
altera apicem versus, lateribus et parte postica lineis flexuosis elevatis 
cinereo toinentosis. Corpus subtus et pedes testacea, cinereo viilosa. 
Long. 3^ lin. Hab. in Rio Janeiro, a Dom. Squires lecta. 
