BARNACLES OF JAPAN AND BERING SEA. 
67 
(pi. x, fig. 9) from a camera lucida sketch of the type which I owe to the kindness of Mr. W. T. Col- 
man, of the British Museum. These show the calcified area to be irregularly oblong, with subparallel 
scutal and basal borders, and with two short subequal, straight facets opposed to the carina and the 
carinal latus, respectively. The peduncle is described as 4.5 mm. long, with about 8 longitudinal rows 
of 7 scales each. The two sides of the type are alike. 
The Albatross took two specimens of Scalpellum at station 4972, south of Hondo, 33 0 25' 45” N. 
135 0 33' E., in 440 fathoms, which agree in the main with japonicum, but differ a little in shape of 
the upper latus. These specimens may be referred to as no. 38684 and no. 38685. 
No. 386S4 (pi. x, fig. 1, 2, 3) has a capitulum 17 mm. long, 9.5 wide, peduncle 5 mm. long. The 
calcified portion of the upper latus on the right side (fig. 1) forms a quadrangular band transverse to the 
length of the capitulum, with an oblong tongue projecting beyond the umbo. There is no calcified lobe 
along the scutal margin, and it differs from the type of 5 . japonicum in having no straight face opposed 
to the carinal latus. On the left side, the upper latus has a slightly waved lower margin, approaching 
in a slight degree to the condition in specimen no. 38685, and to typical S. japonicum. The other 
Fig. 2 . — Scalpellum japonicum. A, terminal appendage; B, maxilla; C, mandible; D, segments from both rami of cirrus v. 
plates are substantially as in the type of 5 . japonicum. The peduncle has 8 longitudinal rows of about 
7 large scales each, therefore like that of S. japonicum. This is the specimen I called var. metapleurum, 
which name will now become a synonym of japonicum. 
Specimen no. 38685 measures, length of capitulum 15, width 9, length of peduncle 6 mm. On the 
left side the upper latus is shaped substantially as in no. 38684, but on the right it is narrower, and 
abruptly attenuated near the carinal end (pi. x, fig. 4). The rostrum is a trifle smaller (pi. x, fig. 5). 
The scales of the peduncle are less numerous, only 4 or 5 in each longitudinal row. Both of the above 
specimens are clothed with a very thin, finely pilose cuticle, which has been mainly ignored in the fig- 
ures, in order to show the outlines of the calcified valves more clearly. 
Specimen no. 38684 was opened. The mandible (fig. 2, C) has three acute points and a severi- 
spined lower point. There are a few scattering hairs below, but elsewhere the borders are very 
smooth, simple, and clear-cut. 
The maxilla (fig. 2, B) has very few spines, a few hairs below but none on the upper margin. 
The first cirrus has unequal rami of about 7 and 12 segments, but they are not distinct in my prepa- 
ration. The second cirrus has subequal rami, is profusely bristly, with 6 or more pairs of large spines 
