1872.1 237 
NOTES ON CICINDELID/ AND CARABIDA, AND DESCRIPTIONS OF 
NEW SPECIES (No. 13). 
Bax.) Wiebe TBS) Eo. 8. 
Genus OXYGONTA. 
Mannerheim, Ball. Moscou, 1837, ii, 17. 
Amongst the many fine and rare insects brought home by that 
prince of collectors, Mr, Buckley, from his second journey to Equador, 
are six new species of this splendid genus of tiger-beetles, Most of the 
Oxygonie previously known have been described from unique examples, 
and consequently from one sex ; but Mr. Buckley succeeded in obtaining 
numerous specimens of both sexes of four of his species, and has thus 
enabled us to study the sexual differences and the range of variation 
in the genus. The males of two of the species (0. gloriola and Buckley?), 
from their rich colouring, are among the handsomest of the family. 
In ashort paper published in the Transactions of the Entomological 
S ciety (1871, p. 378), I pointed out the affinities of the genus, which 
for many years had been misunderstood. The Oxygonie, in fact, belong 
to a natural group of true Cicindeline, differing structurally from Cicin- 
dela only by their very elongate body and sulcated tarsi; the latter 
character being, however, not without some exceptions. The principal 
genera of the group are Odontocheila (Tropical America), Phyllodroma 
(Tropical America), Peridexia (Madagascar), and the less typical Tho- 
peutica (Malay Archipelago). The prevailing style of markings of the 
elytra differs from that of Cicindela in consisting of two, three, or four 
small white marginal spots (sometimes connected with a lateral stripe), 
and in the absence of the usual lunules and bands. In the aberrant 
Thopeutica, only, is observed a tendency towards the complete humeral 
and apical lunules and central band so characteristic of Cicindela. The 
group is distinguished from the true Cicindele also by their habits; the 
majority avoiding open, sandy, and sunny places, and dwelling in the 
shades of the tropical forest, where they settle on foliage almost as 
often as on the ground. From Mr. Buckley we learn the interesting 
and entirely new fact that the Oxygonie are found chiefly on mossy 
stones in the beds of rapid streams, in company with the Oaycheilae, 
which Goudot long ago reported to frequent similar haunts. Mr. Wal- 
lace has stated the same fact regarding Thopeutica gloriosa, which he 
could take only by wading in the cold waters of mountain torrents in 
Northern Celebes. Mr. Buckley discovered the haunts of the Equado- 
rian Oxygoni@ accidentally, while bathing in the River Upano, or Upper 
Morona, near Macas. Crawling on to a rock in mid-stream, he (or, 
