206 The Irish Naturalist. November, 
Cluhiona juvenis is described by M. Simon in " Les 
Arachnides de France/' vol. iv., pp. 227 and 228. No 
figures are given. Dr. R. de Lessert, however, figures 
the sexual organs of both sexes in his " Catalogue des 
Invertebres de la Suisse," fasc. 3, Araignees, pp. 411 and 412. 
Nevertheless we think a few additional remarks may help 
British students to recognise this species when found. 
Length. — Two males measured respectively 3-7 mm. and 
4- 6mm., whilst two females measured 5 -6 mm., and 5-7 m.m. 
Form. — Both sexes are of a slender rather linear build. 
Colour. — In living specimens this appears very pale, 
some examples being almost white with dark heads. 
Carapace yellow-brown with a short longitudinal line at the 
thoracic juncture, and some dark pigment in the ocular'area. 
Sternum yellow-brow^n. Legs and female palpi pale yellow - 
brown. Falces, maxillae, and labium usually deep red- 
brown, the first being the most deeply pigmented. Abdomen 
usually 3/ellow-brown, in one case however it was of a 
warmer shade approaching red -brown. 
Spines. — M. Simon divides the genus Clubiona for the 
purposes of identification into two sections, viz., those in 
which the third tibiae bear each two spines beneath, and 
those in which only one spine is present in this situation. 
No doubt this is a variable feature, but all the British 
Clubionae we have hitherto seen have been quite regular 
in this respect. This is not however the case with C. 
juvenis. Six specimens were examined and of these two 
spines were present in two cases, one spine in two cases, 
and in the remaining two, one spine was present on one 
side, and two on the other. This character thus breaks 
down in the present species. 
Male palpus. — Femur and patella pale yellow-brown like 
the legs. The tibia bears a long broad apophysis of a deep 
red-brown colour. This terminates on the outer side in 
two branches. Of these the anterior or superior is large, 
strong, and obliquely truncated at the extremity. The 
posterior or inferior branch (Plate i, figs, i, 3, a,) is very 
small, and projects almost at right angles to the body of 
the apophysis. It is almost invisible in an external elevation 
but seen from above appears to look downwards and back- 
