234 
broad base. The peduncle is short and passes rather imperceptibly 
into the capitulum. 
Calantica affinis conspicuously differs from the other species of 
the genus by its nude peduncle; indeed, this character distinguishes 
it from all the family, and only the accessory plates of the capi¬ 
tulum show its affinities. The most nearly related species seems 
to be Calantica superba (Pilsbry); in the latter species the latera 
have rounded apices, and also the scutal apex is bent in over the 
tergum, and thus decidedly differs from Calantica affinis. 
Genus Smilium (Gray). 
Pilsbry (1908), and after him Kriiger (1911) make a dis- 
tinction between the genera Smilium and Euscalpellum on base of 
their males; in Smilium the males have the same skeleton as in 
most of the Calantica- species, with six well developed capitulum 
plates, whereas in the genus Euscalpellum, the capitulum skeleton 
of the males consists of only three rudimentary plates. Although 
this character is of great interest biologically seen, and also second- 
arily might serve as a strengthening feature to a generic diagnosis, 
we cannot look upon the character as a generic fundamentum divi¬ 
sionis. In this respect we may point to the male of Calantica Mor- 
tenseni which logically ought to serve as the base of a new genus, 
if we were to follow Pilsbry’s reasoning; to this must be added 
that the biologically much more essential feature of the existence, 
resp. absence of a male in the different species of Scalpellum does 
not come on record in the systematics. Although these features are 
of great interest and ought to be carefully studied, they must not 
be overvalued as systematic characters. 
In this paper Smilium comprises both genera of Pilsbry men- 
tioned above, i. e. all scalpelloid barnacles with subcarina, and with 
an upper latus pushed in between scutum, tergum, and carina. 
Smilium acutum (Hoek) Pilsbry. 
32° 15’ N. 128° 12’ E., 90 fathoms „Hyaton Maru“ 15/V 14. Four 
specimens on a hydroid colony. 
Menado Bay: 1° 3P N. 124° 47’ E., 250 fathoms. Capt. Christiansen 
leg 12/III 13. One specimen on a hydroid. 
