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ON THE CLASSIFICATION OF THE ADEPHAGA. 
Stirps Adephaga , Clairville ( Carnivora , Cuv.).'—Maxillae, terminated by 
an acute hook, and interiorly ciliated (hg. 2, a); outer lobe being 
articulated or palpiform. Anterior tarsi usually dilated in the males. 
Habits principally carnivorous. 
Tribe Carabacea , Rylands ( Geodephaga , McL.).—Jaws long, horny, and 
curved. Eyes prominent. Legs formed for running; the posterior two 
having horizontal^ and vertical motions, and furnished with very strong- 
appendages, termed trochanters , at their origin. Body oblong, or ovate. 
Families, thus characterised :—« 
f with a moveable claw (fig. 1) .. 1. Cicindelidcz. 
MaxillcB^ without a moveable claw (fig. 2.); 
f not notched 
Anterior tibicel on the inner side near the tips. (fig. 3.) 5. Carabidce. 
t notched near the tips (fig. 4.); 
/with terminal joint J truncated (fig. 5.) 2 . Brachimdce’ 
%as large as the pre- ^ ' 1 not truncated (fig. 6); 
“^fding (% 2 > Abdomen / P e ^ unculate< ^ (%• 7-) 3. Scaritida;. 
i \not peduncul. (fig. 6.) 4. Harpalidse. 
v.with terminal joint minute and conical (fig. 9.).6. Bembidiidce. 
In the above arrangement I have principally followed Latreille, whose classi¬ 
fication Mr. Westwood justly praises as having fully borne out its authors 
description of being “fondee sur des rapports naturels ." The connecting links 
between the families which he has suggested appear so natural that I cannot 
refrain from submitting them to the reader; and I have thought that figures of 
the foreign examples, of which we have no British analogues, would materially 
assist the student in tracing the affinities pointed out. 
Fam. 1, Cicindelidoe , Kirby. 
Intermediate forms.— Authia , Graphipterus , &c. (ex. sp. G. multiguttatus , 
fig. 6.). 
Fam. 2, Brachinidce , MacLeay ( Truncatipennes , Latr., Brachinides , 
Westw.). 
Interm, forms.— Enceladus , Siagona , &c. (ex. sp. S. Europoea , fig. 8).* 
Fam. 3, Scaritidoe , MacL. (Bipartite Latr., Scaritides , Westw.) 
* Although Enceladus and Siagona approach Brachinidce in the form of their tarsi (which are 
not palmated, comp. figs. 7. and 8.), the principal connection between the two families must be 
taken from the labial palpi, the last joints of which are hatchet-shaped or securiform (fig. 11) in 
Enceladus, and Siagona. A similar form prevails amongst Brachinidce. This appears to me suffi¬ 
cient to prove the affinity cf the two families, though I am inclined to believe that other forms, 
more decidedly intermediate, will yet be dicovered. 
