The view which Latreille has taken in his Families Naturelles , 
of that portion of the Carabidse to which our genus belongs, 
appears to be more artificial than the outline given by Dejean 
in his Catalogue ; for the Trechi and Bembidia are so nearly 
related, that it will be found difficult to decide where a line 
might separate them. In the work first alluded to, however, 
very remote situations are assigned to them ; the greater por- 
tion of the Carabidse, including the Harpalidae and the section 
with simple anterior tibiae (called Abdominales), being forced 
between them ; whereas by merely transposing the two groups 
Blemus and Trechus of the Catalogue, nearly the following 
arrangement presents itself. 
1. Stenolophus, the type being the C. Vapor ariorum of Fab. 
not of Linn . ; it has the penultimate joint of the tarsi 
bilobed. 
2. Trechus paludosus Gyll. will probably be the type. It 
may be observed, that the C. tempestivus Panz. ( rubens 
Fab.) belongs to this genus ; but the tempestivus of our 
cabinets is a larger insect, and one of the Bembidia. 
3. Blemus Discus Fab., &c. 
4. Epaphius secalis Leach. 
5. Aepus fulvescens Leach , Sam., Nob. This singular insect 
was first discovered by Dr. Leach, under stones at the 
mouths of the rivers Tamer and Yalm on the southern 
coast of Devonshire, in May and June ; and it was last 
year taken in July, at Ballyhullish Ferry in Scotland, 
by Mr. Francis Walker. The strongly marked trophi, 
minute eyes, and armed penultimate joint of the tarsi, 
sufficiently justify the adoption of this genus. 
6. Cillenum laterale Leach , Nob. — C. areolatus Creutz . also 
belongs to this genus. 
7. Tachys pusillus Dej., and the other Bembidia. 
The Comte Dejean has placed two European genera after 
Stenolophus; that is to say, Masoreus Zeig., with which I am 
unacquainted, and Apotomus Hoff., which Mons. Latreille 
places with the Scaritidse : should this last be related to the 
Trechi, it may find a place probably near to Epaphius, which 
has somewhat the habit of the Scaritidas or Bipartiti. 
The plant Lobelia Dortmanna (Water Gladiole), I gathered 
close to the shores of Loch Katrine and Ellen’s Island the 
beginning of August. 
