226 NILS HJ. ODHNER 
times the breadth), with the denticulated edge less than half the pase of the 
tooth. Dimensions: |. 16, br. 8,1, height 3,7 mm. 
Masatierra, 20—35 m, sand and Corallinae, **/4 1917, 1 sp., 1. 10 mm; 
30—40 m, same bottom, */4 1917, 6 sps., max. |. 16 mm. 
Of the fam. Cadlinidae only 
two genera are previously known 
‘) Va «fara and the one of them, Trades 
ae Gu described by BERGH in 1898, is of 
interest as being the nearest ally 
of the new genus not only in 
systematical respect but also as to 
its occurrence (at Calbuco; only 
one specimen of the single species, 
T. nobilis, was kept). The common character is above all the unarmed penis, 
and the chief difference lies in the shape of the tentacles, in which 7yrzxnxa 
shows a remarkable differentiation, whereas Yuwanella, in the furrow of the 
external tentacle margin, shows an interesting parallelism to Dorzs. 

Fig. 3. Teeth from the radula of /wanella sparsa n.sp. 
X% 275. 
*Chromodoris juvenca Bergh. — Masatierra, 30—40 m, sand and Coral- 
linae, '/4 1917, I sp., 1. Iomm, together with Fwanella sparsa. Like the typical 
specimen, which measures only 7 mm in length (BERGH 1898), the present 
animal has a radula with a 4-cusped median tooth and has all other charac- 
teristics common to the type. 
*Euplocamus maculatus Bergh. — Masatierra, 10--35 m, sand and Coral- 
linae, !'/4 1917, I sp., 1. 10 mm. Frontal papillae 8, dorsal papillae 4 on each 
side, gills 5, back finely granulated, tail contracted, but indistinctly keeled. 
BERGH’s specimen was only 4 mm in length, had only 3 papillae on each side 
of the back, 3 gills, and a smooth back. In spite of the differences thus existing, 
the present specimen is certainly /. maculatus, the other Pacific species, . pacz- 
jficus Bergh, being very different as regards the number of frontal appendices. 
* 
Among the terrestrial mollusca known from Juan Fernandez there are a 
few species which have not been refound by the Swedish expedition, viz. Stepha- 
noda arctispira and cerotdes of PFEIFFER, and SS. selkirki of E. A. SMITH 
(cf. TRYON, Man. of Conch. 3, 1887), as well as Lernandesia expansa, philippiana, 
qwilsont, tnornata and longa of PILSBRY, and /. conzfera of REEVE. Further 
two species, Stephanoda pusio and Fernandezia diaphana, both of KiNG (Zool. 
Journ. V, 1830—31), are insufficiently described and still unfigured, so that 
they could not be identified. On the other hand, however, the expedition has . 
revealed 12 new species and contributed to an exact knowledge of the relation 
of the land mollusc fauna. The collections contain 32 species, mentioned and 
described in the following pages. 
