Doctrine of Affinity and Analogy. 101 
bici it bears the greatest affinity. Its depressed body, its elytra 
very obtuse at the tip or subtruncate with an epipleura dilated at 
the base, and its blunt anus, seem to indicate an approximation to 
Lebia, Dromius, &c., and the labial palpi are not unlike those of 
one sex in Tarus Clairv. (Cymindis Latr.) belonging to the same 
section; but its sessile head brings it nearer to Scolytus Fab., . 
the labium of which is not very dissimilar, and to the aquatic 
Entomophagi. Its thorax is shaped very much like that of Hy- 
drophilus caraboides. Its maxillary palpi are unlike those of 
any other entomophagous genus yet known. Many links, how- 
ever, remain to be discovered before we can connect this re- 
markable and puzzling genus with any one at present known. 
In going over most of the cabinets in London I could discover 
nothing that came at all near this insect, which I purchased at 
the sale of the late Mr. Francillon's collection. From the mode 
in which it is transfixed, and the pin used, I suspect that it was- 
taken by Mr. Abbot in Georgia. 
excrucians. 1. P. 
Tas. IH. Fip.3. 
Long. corp. lin. 5. 
Habitat in Georgiæ forsan aquaticis? Ex Mus. D. Francillon. 
Corpus leve, nitidum, subpilosum, rufum. Labrum antice 
punctis quatuor excavatis setigeris. Oculi in medio pilosi. 
Coleoptra seriatim subpunctata, picea: margine externo 
rufo. 
( Melolonthide.) 
Mimeta, Kirby. 
Character Essentialis. 
Mandibule dorso rotundatæ, apice compresse bidentatæ : dente 
inferiori truncato. Antenne novem-articulatæ. 
Character 
