126 
Psyche 
[December 
great deal. All of the following chaetotaxy formulae are 
to be found (Gisin, 1952) : ilm, i3m, i2 — , and i3 — . The 
formula i3m is by far the most common and may be con- 
sidered typical of the species. The relationship of the M/s 
setae of the fifth abdominal varies from 17/10 to 19/12, 
with 18/11 being the commonest form. 
The species is distinguished from all others of the 
armatus group by a combination of characters, particularly 
the presence of 2 pairs of pseudocelli on the posterior 
borders of the head and fifth abdominal segment, the 
absence of ventral pseudocelli, and the relationship of M/S. 
Type locality: Ain Z’halte Cedars, Lebanon, X-28-53. 
Also taken from: Vicinity Becharra Cedars, Lebanon, 
VII-1-52; “The Cedars,” elev. 1900 m., Lebanon; Vicinity 
Bludane, IByria. 
Onychiurus armatus Tullberg 
Onychiurus armatus Tullberg, 1869, Akad. Afhandl. Uppsaler. Pp. 1-20. 
I have found this species from a single locality: Ain 
Z’halte Cedars, Lebanon. Cassagnau reports it from six 
localities in Lebanon, but the localities he reports it from 
make it appear probable that he is including under this 
name both armatus and 0 . levantinus. 
Onychiurus octopunctatus Tullberg 
Onchiurus octopunctatus Tullberg, 1876, Ofver. Kongl. Vet.-Akad. For- 
hand. 33:23-42. 
Two specimens of this species were reported from Le- 
banon by Cassagnau. 
Onychiurus butrosi n. sp. 
Plate 7, Figures 9-11 
Description of holotype (male) : Color extremely pale 
yellow; body stout, somewhat swollen posteriorly; last 
three abdominal segments not clearly separated ; head with 
a number of long, straight or slightly curved setae largely 
confined to the lateral and posterior portions ; first thoracic 
segment with a single row of setae as described for O. 
