345 
with the same plate as figured by Pils- 
bry (1907, p. 39, fig. 10b) in Seal- 
pellum sanctipetrense, and by H o e k 
( 1 907, pi. VIII, fig. 15 a) in Scalpel¬ 
lum imbricatnm. 
The present specimen no doubt be- 
longs to Pilsbry’s group of Scalpel¬ 
lum portoricanum, as indicated by the 
shape of the rostral latus, and with 
this group the American Scalpellum 
sanctipetrense seems to be nearly rel- 
ated. The portoricanum- group com- 
prises several commonly distributed 
Tropic-Subtropical small forms. The 
present specimen is closely related to Scalpellum imbricatum from 
the Malay Archipelago, but the different length, and the shape of 
the carina seem to deny an identity with this species. 
Fig. 77. Scalpellum aff. imbricatum 
from the New Zealand Government 
trawling expedition. a left side of 
the aniinal, b lower latera of the 
right side. [a X 4, b X 5,3]. 
Some geographical remarks. 
The localities from where Dr. Th. Mortensen gathered cirri- 
peds naturally arrange themselves in some larger regional groups, 
viz. the Philippine Archipelago, the Japanese waters, the waters 
round New Zealand down to Campbell Island, Hawaii, and the 
Pacific American coast from Nanaimo to the Bay of Panama. It is 
most convenient to treat each of these „regions“ separately. 
From the Philippine Archipelago the localities, and species 
are arranged in the following table: 
Date 
Locality 
Depth 
Species 
II 14 
Off Cavite, Manila Bay. 
ab. 5 fthms. .. 
Balanus amphitrite f. communis. 
/II 14 
/II 14 
F]pbn . 
beach. 
Octolasmis orthogonica; Balanus at 
Zamboanga. 
beach. 
phitrite f. communis. 
Chtamalus moro; Tetraclita squamo 
f . viridis; Tetraclita vitiata. 
