198 Dr. Malcolm'^iurr’s Prc/iiiilnar// Jievision of the 
well described, but not tigured, by Borelli, It must be 
carefully distingiiisbed from Ct. ni(jra. The antennal 
segments are rather longer than the other species, thus 
affording the transition to Mctisolahis. 
Ct. fernandezi, Bor. (1909^, p. 4, fig. 2), is well described 
and figured by Boielli. It occurs in Costa Rica. The 
unique type has white eyes, which are very prominent, but 
this colour is probably not a permanent feature. The body 
is longer anti build slenderer than in the other species, and 
the pronotum is much more finely punctulafe than in Ct. 
montana. 
All the species of Ctenisolahis have a strong family like¬ 
ness, and though when placed side by side tliey appear to 
be quite distinct, it is difficult to express the difference in 
words. As they are apterous, and rare forms, probably 
each with a restricted distribution, the locality becomes an 
important specific character. 
The occurrence of such similar species in such widely 
separated localities is probably an archaic feature, point¬ 
ing to the great age of a group, now dying out, and 
which must formerly have been a dominant and widely 
distributed type of earwig. 
Perhaps more than one species is confused under 
the name Ct. nigra, but I cannot distinguish between 
Paraguayan and Brazilian specimens. 
Genus 7.—Leptisolabis, Verb. 
Le/disoUd/is, Verb., op. cit., p. 12. 
JJrachykihis {partim), Borm. 
This genus is characterised by the lateral eyes, non- 
keeled mesonotum and globular 4th and 5th antennal 
seofinents. 
The type is L. usamharanu, Verb., from Usambara 
(Africa). It includes also the true Br.punctata, of Dubrony 
from Java, which is distinct from the species quoted by 
him under that name from Burmah, which is Metisolahis 
caudelli, Burr. 
One of the chief features of the two African species 
described by Verhoeff, L. usamharana and L. thcoriac., is 
that the anterior border of the pronotum is produced into 
