432 SUPPLEMENT. 
The large square spot on each side of the thorax is composed of extremely fine and 
compact tomentum of a chalky-white colour; it leaves a central vitta and a short basal 
fascia very neatly defined of the black general colour of the insect. The abdomen is. 
wholly black. 
10. Alampyris (?) subcarinata. 
Quoad formam .A. fuliginee similis, sed differt elytrorum carina obtusa ante medium evanescente ; fusco-nigra,. 
antennis undique et corpore erecte pilosis ; fronte, thorace vitta laterali obliqua, elytrisque margine laterali 
(prope apicem excepto), flavo-testaceis ; femoribus 4 anterioribus antennarumque articulis 4° et 5° albo- 
testaceis, his tenuioribus sicut in Amphionycha articulisque 3° et 4° relative valde elongatis; capite inter 
antennas sat profunde concavo; thorace antice angustato; elytris prope apicem paullulum dilatatis, carina 
laterali obtusa ante medium evanescente, sed ibi epipleuris sat altis striato-punctatis, dorso sequaliter 
striato-punctatis. 
Long. 33 lin. 
Hab. Panama, Bugaba (Champion). One example only. 
This species belongs but imperfectly to the genus Alampyris; the antenne are nearly 
the same as in Amphionycha, and the elytra are striate-punctulate, and not irregularly 
punctulate as in all known species of Alampyris. The incomplete lateral carina and. 
the colours and facies decide me to place the species here rather than in Amphionycha. 
ISOMERIDA (p. 221). 
Isomerida subdilatata (p. 221). 
To the locality given, add :—Costa Rica, Cache (Rogers); Panama, Bugaba 
(Champion). 
Mr. Champion captured many examples of this species in the virgin forests of the 
low country ; all were captured on the wing or sitting upon leaves, never about fallen 
timber. 
4. Isomerida cinctiventris. (Amphionycha cinctipennis, Tab. XXV. fig. 20.) 
I, albicolli proxime affinis, forsan ejus varietas geographica. Cylindrica, fulvo-ochracea; thorace interdum 
roseo vel partim albescenti, elytris apice raro nigro-fuscis, metathorace abdomineque nigris, segmento 4° 
albo-tomentoso; antennis sicut in J. albicolli ciliatis, nigris, articulis basi anguste pallidis ; thorace cylin-. 
drico, angulis basalibus exstantibus, acutis; elytris apice truncatis, angulo exteriori breviter dentato, 
epipleuris altis bicarinatis carina inferiori apice longiori, dorso punctulato obsolete unicostato ; femoribus 
flavis, tibiis tarsisque nigris. 
Long. 43-53 lin. 
Hab. Panama, Bugaba (Champion). 
Very near the common J. albicollis of Guiana and the Amazons. In that species, 
however, there are always two white ventral segments in both sexes, and the hind 
angles of the thorax are not so much prolonged. In the pale tawny-ochreous form of 
I, albicollis the legs are wholly of the same colour; this is therefore a distinguishing 
