Lahiduridae, d family of the Derma^dcra. 193 
Tlie above discrepancies are to my mind quite decisive, 
and I liave no doubt that the Brazilian B. coriacea is quite 
distinct from B. chilensis. But as it is generally known 
under that name in collections, it is convenient to define 
the typical genus Brachylabis by the main generic features 
of B. coriacea, as I have done in the preceding table, i. e. 
eyes small and normal, and mesonotum keeled; the an¬ 
tennae segments are cylindrical, not globular, the fourth 
being a little shorter than the third. 
It is quite possible, or even probable, that when the 
true B. chilensis is re-examined, it will be found to be 
generically different from B. coriacea. It will then be 
necessary to re-characterize the genus, and to erect a new 
one for B. coriacea. 
B. coriaxca has all the characteristics of the group in 
colour, appearance, texture and general structure; the 
antennae have 15-16 segments, and are paler at tlie apex; 
the pronotum is about If times as long as broad, gently 
widened posteriorly; the mesonotum has a distinct keel 
running its entire length; the legs are yellowish brown ; 
the forceps of the male are arcuate towards the tips, and 
sometimes have a blunt tooth near the base. 
I possess specimens from Espirito Santo, and in tlie 
Bnmner collection there are specimens from Santa 
Catherina and Novo Friburgo. 
I may add that these are not common insects, and it is 
not probable that any one species should be common to 
Brazil and to Chile. 
Brachylabis scotti, sp. n. 
Statura minore, robustiori ; oculi parvi, anteriores; antennae 
seginentis 10 elongatis, conicis; mesonotum baud carinatum ; abdo¬ 
men dilatatum; forceps paullo arcuatus. $ 
Long, corporis . ... 6 mm. 
„ forcipis.1‘5 
Hah. Seychelles. 
I describe this species here briefly; it will be more fully 
discussed in a work upon the Dermaptcra of the Seychelles, 
on material obtained by the Gardiner-Scott expedition. 
We must provisionally place it in this otherwise Neo¬ 
tropical genus; when more material is discovered, its 
true relationship will doubtless be better defined. 
TRANS. ENT. SOC. LOND. 1910.— PART III. (NOV.) O 
