1958] 
Christiansen — Collembola 
75 
members of this species, I consider it best to place them 
in the same species. In the region it appears to be rare and 
only in the cedar forests. Distribution : Lebanon : B’Charra 
Cedars, v ’53 ; Barouk Cedars, VI ,53 ; Hadeth Cedars, vn ’53. 
Vertagopus ciliatus, m sp. 
Plate 9, figures 22-25; plate 10, figures 26-28 
Body subsylindrical, furcula reaching posterior border 
of second abdominal segment. Antennae clearly longer than 
head and slightly longer than furcula. Pigment dark blue 
in scabrous patches over antennae, head and body tergites. 
Legs, furcula, and venter light blue. Fourth antennal seg- 
ment with two prominent apical humps and a single apical 
cone bearing a stout acuminate seta. Just below antennal 
apex a single stout curved rod and below this a distinct 
pit containing a spherical knob with a short curved conical 
seta on its basal margin. Outer margin of segment with 
two irregular rows of curved blunted setae. Third antennal 
segment “sense organ” of two strongly curved thickened 
knobs without clear protective setae. Remainder of an- 
tennae clothed with numerous curved and straight acumin- 
ate smooth setae. Fourth abdominal segment similar except 
for the posterior two rows of setae which are apically 
unilaterally ciliate. Fifth segment clothed with similar 
setae with the addition of a single row of long cylindrical 
setae, blunt and apically finely ciliate. Sixth segment with 
three rows of long setae, the anterior row similar to those 
of the fifth segment, the posterior two rows somewhat 
more acuminate. Tibiotarsus with three clubbed tenent 
hairs, the median strikingly longer than the others. Unguis 
narrow, with small internal and pronounced lateral teeth. 
Empodial appendage lanceolate with minute corner tooth. 
Eyepatch solid, eyes eight per side with eyes G and H 
smaller than remainder, P.A.O. oval, about as long as one 
large eye, with faint indication of transverse listel. Tena- 
culum with four teeth and five setae on corpus. Manubrium 
with fifteen ventral setae as follows: two transverse rows 
of three near apex and two converging longitudinal rows 
of four setae joined at a basal median seta. Dens with 
numerous stout acuminate ventral setae and four slender 
