Mr. Waterhouse on Carahbideous Insects. 351 
land. This view, bold as it is, is strikingly supported by the 
fact ascertained by Mr. Kemp, that the terraces encircle the 
highest hills in the neighbourhood of Galashiels, almost to 
their summits. But as my object in this paper was merely 
to explain the difficulties suggested by my former one, I shall 
not anticipate the more able communications about to appear 
on this important and absorbing subject, or the pleasure to 
be derived from the “ Etudes sur les Glaciers de la Suisse” 
of Prof. Agassiz himself. J. EK. Bowman. 
Manchester, Nov. 16th, 1840. 
XLII.—Carabideous Insects collected by Charles Darwin, 
Esq., during the Voyage of Her Majesty’s Ship Beagle. By 
G. R. WatreRrHovseE, Esq. 
[Continued from p. 257.] 
Aut the species noticed in this communication are from Mal- 
donado, La Plata. 
Genus BRACHINUS. 
Sp. 1. Brachinus maculipes. 
B. niger ; capite, thorace, pedibus, pectoreque ferrugineis ; genu- 
bus nigris ; antennis fuscescentibus ; articulis primo et secundo 
ferrugineis, tertio quartoque nigris: elytris subcostatis. 
B. crepitanti feré similis, at duplo major. 
Long 64 lin.; lat. 23 lin. 
In form and appearance this species greatly resembles the Bra- 
chinus crepitans, but its size is much larger; the eyes are rather 
more prominent, the elytra are black, and in the specimen before 
me, destitute of the blue or green tint usually observable in that 
species, and the strie are a trifle more distinct ; it moreover differs 
in haying the apical portion of all the femora black. Like B. cre- 
pitans, the third and fourth joints of the antenne are black, but the 
following joints are pitchy-black, and thus differ from the corre- 
sponding joints in that species: the abdomen is black beneath, but © 
the chest is pitchy-red. 
But one specimen of this species was brought home by Mr. Dar- 
win : it is readily distinguished from Brachinus Platensis by its larger 
size, the black third and fourth joints of the antenne, the black tip 
to the femora, and the darker colour of the elytra. 
Sp. 2. Brachinus Platensis. 
B. ferrugineus ; elytris fuscescenti-nigris, subcostatis ; abdomine 
ad apicem nigricante. 
B. crepitanti simillimus, sed pauld major. 
Long 44—5 lin. ; lat. 2—23 lin. 
