70 
Psyche 
[June-September 
Proisotoma minima (Absolon) 
Isotoma minima Absolon 1901. Zool. Anz.24 (634) : 32,33. 
Only three specimens were recovered from one locality: 
Lebanon: Aaranita, vn ’52. 
Ballisrura schdtti Dalla Torre 
Proisotoma schdtti (Dalla Torre) 1885, 46 Progr. St. Gymn. Innsbruck. 
Handschin recorded this species from Palestine. 
Ballistura levantina, n. sp. 
Plate 8, Figures 8-13 
Facies Hypogastrura- like. Body and appendages thick. 
Uniformly blue-black in color except for slihgtly paler legs- 
Clothing of trunk and head of smooth, short curved setae 
of relatively uniform length. Sixth abdominal segment with 
a dozen longer setae about twice to three times as long 
as the shortest setae of the same segment. Antennae 
slightly but definitely longer than head. Fourth antennal 
segment without apical bulb, clothed with a variety of short, 
smooth setae. These are of three main types, straight to 
curved acuminate setae, straight truncate setae, and long 
mostly curved blunt “sensory” setae. In addition the dorsal 
surface bears a short triangular spine-like seta in a clear 
pit. Sense organ of third antennal segment of two oval 
central pegs, one of which is strongly curved. Remainder 
of antennae clothed with normal acuminate setae. P.A.O. 
elliptical, eyepatch. Tibiotarsus without subsegment. Ten- 
ent hair not clavate and unguis untoothed. Empolial ap- 
pendage with large inner basal lamella and clear apical 
filament. Manubrion without ventral setae and with num- 
erous torsal setae. Dentes thick but tapering. Mucro boat 
shaped with thick granulate central axis, and with toothed 
lateral lamellae. Mucro from site view very deep, more 
than V 2 as deep as long. Tenaculum with four teeth and a 
single bristle. Corpus with an anterior projection much 
longer than the rami. 
The species is similar to B. crassicauda in most respects. 
The differences between the two species are all small 
but in accumulation they indicate a real difference. Since 
previous abundant records of the group have shown little 
variation I feel the differences listed below merit specific 
separation. 
