18538.) 288 
base, and not sinuate at the posterior angles, which are rectangular and very 
slightly rounded; the punctures are dense, very distinct. The elytra are dis- 
tinetly punctured; the sutural stria may be traced to the base, but is deeper 
behind the middle; there are traces of other strie near the apex. The pos- 
terior thighs are compressed, and at the middle of the inferior margin are armed 
with a small sharp tooth. 
Div. 2. Anisotomine. 
Trochanteres posticc simplices; coxe postice approximate. 
This division is considered by Erichson as a distinct family, which he divides 
into two groups: Anisotomini, with strongly spinous tibize, and Agathidiini, with 
the tibiz slightly spinous, or merely pubescent. This arrangement does not ap- 
pear altogether natural, as some of the species of Liodes have the spines of the 
tibiz very distinct, while others have the same organs nearly smooth. Possibly 
a more natural division might be into three groups, thus: 
A. Clypeus parvus capite connatus, vel vix distinctus; caput subtus non 
insculptum. 
B. Clypeus valde distinctus: caput subtus non insculptum. 
C. Clypeus nullus: caput subtus sulcis profundis insculptum. 
The first group corresponds to Erichson’s Anisotomini: the second contains 
Liodes, and probably Amphicyllis: the third contains Agathidium only. The 
first division is said by Erichson (ins. Deutsch]. 44) to be almost peculiar to 
Europe : it will be seen, however, that it is quite respectably represented in this 
country. 
Anisotoma Illizer. 
1, A.alternata, oblonga, ferruginea, nitida, thorace subtiliter punctato, 
elytris striis punctatis, interstitiis subtilissime punctulatis, alternatim pluri- 
punctatis. Long. +18. . 
Letodes alternata Mels., Proc. Acad. Nat. Sce., 2, 103. 
One male from Alabama, Haldeman: Dr. Melsheimer’s specimen was found in 
Pennsylvania. The anterior tibie are gradually and slightly dilated: the pos- 
terior tibia are elongated, curved inwards, and slightly thickened at the tip. 
2. A-.assimilis, ovalis nigro-picea, thorace subtiliter punctato, lateribus 
rotundatis, basi late rotundata utrinque punctis maioribus marginata, elytris sub- 
tiliter punctato-striatis, interstitlis obsolete punctulatis, alternatim pluripuncta- 
tis. Long. -16. 
Le Conte, Agassiz’ Lake Superior, 221. 
One male, Eagle Harbor, Lake Superior. The anterior tibie are slightly di- 
lated, the posterior ones elongated and curved inwards. 
3. A. indistincta, rotundata, convexa, piceo-rufa, thorace obsolete punc- 
tulato lateribus minus rotundatis, basi vix sinuata, utringue punctis paucis mar- 
ginata, elytris minus subtiliter punctato-striatis, interstitlis subtiliter parce 
punctulatis, alternatim 3 vel 4 punctatis. Long. °11. 
Le Conte, Agassiz’? Lake Superior, 221. 
? Leiodes puncto-striatus Kirby, Fauna Bor. Am. 110. 
One specimen, found on the north shore of Lake Superior. The anterior tibie 
are as in the preceding, the posterior ones are straight and not longer than the 
others. Kirby says that the interstices of the elytra are smooth, and they really 
appear so, except under a powerful lens: a new examination of Kirby’s type 
must, however, be made before they can be considered as identical. 
4, A.collaris, ovalis, convexa, rufo-testacea, antennarum clava, capite 
thoraceque piceis, hoc sat dense punctato, lateribus valde rotundatis, rufescenti- 
bus, basi truncata, utrinque punctis magnis marginata, elytris profundius punc- 
tato-striatis, interstitiis subtilissime parce punctulatis, alternatim 5 vel 6 punc- 
tatis. Long. -12. 
Le Conte, Agassiz’? Lake Superior, 221. 
One male, Eagle Harbor, with the posterior tibie slightly curved. 
