COLEOPTERA-CARABIDAE OF THE JUAN FERNANDEZ ISLANDS 635 
specimens), 4 to 9g all converging behind on a spot a little in front of the 
apical emargination, g leaving the marginal channel at some. distance behind 
shoulder, a short scutellary striole present between 1 and 2; intervals moderately 
convex, inner ones approximately equal, outer ones, becoming very narrow as 
they approach the point on which the striae converge, 9 rather narrow through- 
out, 3 with three pores (not always present) at about a fifth, two thirds, and 
five sixths respectively, a tenth interval present, both wide and flat, between 
the apparent origin of interval 9 and the apical emargination; surface impunctate, 
except for a short row of small punctures visible in two of the specimens near 
the base of interval 6, a depression on each side behind shoulders and another 
deeper one on each side of disk in front of the apical declivity; epipleura wide, 
slightly narrower at middle, ending rather abruptly just before the apical 
emargination. Microsculpture isodiametric, fairly conspicuous on the elytra, 
the meshes much smaller and fainter on the sides of head and prothorax, 
wanting on the disks of both. Underside impunctate, prosternal process fine, 
bordered at apex, the declivity rounded, metepisterna quite a half longer than 
wide, ventral segments not sulcate, apical segment with one seta on each side 
in the ¢, 2 in the 2, a little removed from margin. Femora all dilated; 
metatrochanters half as long as the femora; tibiae all dilated at apex, mesotibiae 
d curving gently inwards, metatibiae f curving first inwards and then outwards; 
first metatarsal joint with a slight outer sulcus, joint 5 setulose beneath. The 
very peculiar form of the elytra, with its dilated sides, surface depressions, 
wide tenth interval, and lobate declivous apex, should render the species easily 
recognizable. 
Masatierra (J. J. WALKER), 4 ex. (¢@), found at from 100 to 500 feet. 
The type is in the British Museum. 
Pterostichus selkirki sp. n. — Fig. 4. 
Length: 11,5 mm. Width: 4,2 mm. 
Black: palpi and joints I to 3 of antennae dark ferruginous. 
Body apterous, //ead convex, clypeus 
slightly emarginate, the suture very fine, frontal 
foveae shallow, surface with a few vague striae, 
eyes moderately prominent, antennae barely 
reaching base of prothorax, ligula bisetose, 
truncate at apex, tooth of mentum deeply 
notched. /Prothorax convex, quadrate, nearly 
a half wider than head, a third wider than 
long, widest at middle, base a little wider 
than apex, sides bisetose, narrowly bordered, 
evenly rounded from base to apex, hind angles 
slightly obtuse but little rounded; median 
line very fine, transverse impressions obsolete, 
inner basal foveae rather long though only 
faintly impressed, outer ones obsolete, surface 
with only a few vague transverse striae, middle Fis) a: uPrenaghishissiaasie er Amayeemee! 
of both base and apex longitudinally striate.  ~ x4. 





