1957] 
Christiansen — Collembola of Lebanon 
85 
mucrones. Since this, as most ratio distinctions, is very 
unstable it is not a serious objection. If this is accepted 
as the true assimilis then the following table can be used 
to separate the four species: 
assimilis ? similis subsimilis simvlans 
dental 
formula 5/6 5/6 4/6 6/6 
internal 
setae of 1 row 
tibiotarsus “smooth” “smooth” ? ? 
mucro no lamella with lamella no lamella no lamella 
distal scale 
/ mucro longer shorter longer shorter 
Distribution: Bahr Atibe, east of Damascus, Syria, July 
10, 1953. 
Cyphoderus albinus (Nicolet) 
Cyphoderus albinos (Nicolet), 1842, Nouv. Mem. Soc. Helv. Sci. 
Nat. 6:1-88. 
Cassagnau and Delamare reported this from Dahr el 
Ain in Lebanon. I have two specimens taken from Latakia 
Syria, which appear to be this species. Unfortunately 
both were damaged in capture so that a certain identifica- 
tion is impossible. 
Cyphoderus bidenticulatus (Parona) 
Cyphoderus bidenticulatus (Parona), 1888, Ann. Mus. Civico Genova 
Ser. 6:83. 
Reported from two caves in Lebanon by Cassagnau and 
Delamare. 
Cyphoderus agnotus Borner 
Cyphoderus agnotus Borner, 1906, op. cit . : 180-181. 
Although this form has not been recorded from Lebanon 
or Syria its widespread occurrence throughout Palestine 
makes it quite probable that it does occur in the southern 
part of this area. 
