Addenda. 
Bouvievia ornata (Cheesenian), p. 51. 
Suter refers this species to Berthella evidently on account of 
its smooth-edged jaw-elements. Like Berthella, too, it has a rela- 
tively small Shell. But the radula characters undoubtedly place 
it in Bouvieria. Externally it differs from B. aurantiaca and all 
Berthellas in the position of anus somewhat in front of the post- 
erior end of the giil mesenterium. 
Bergh (1902) certainly had another species at hånd, when 
he described a specimen from Rarotonga, designated as Pleurobranchus 
ornatus Cheeseman, since it differed in serrated jaw-elements. 
Marinula parva (S wa in son), p. 55, var. striata n. 
The present specimens differ from the typical M. parva (from 
Tasmania) in being regularly striated spirally, at least in their 
upper whorls. This character being exceptional within the genus, 
the form in question de- 
serves to be recognized as 
a separate variety striata 
(text-fig. 24). 
Suter (1913) gives 
some particulars of the ra¬ 
dula of M. parva. They 
may be completed by the 
following facts concerning 
the present form: Length 
and breadth of radula, 0.95 
and 0.36 mm resp.; series 
of teeth 138; teeth in one 
series 270. Median tooth with a small simple cusp; laterals 1 — 
109 with an entocone; 110 —114 with an additional ectocone; 
subsequent (marginal) teeth, by addition of ectocones with 4 den- 
ticles, and outermost ones with 5. All teeth extremely small: 
laterals little more than 1 // in breadth (text-fig. 24 
Fig. 24. Marinula parva Swainson, var. striata n. 
Aiickland Isl., X 6, with teeth from its radula 
(median, two laterals, one marginal). X 2300. 
