68 
bulletin of the bureau of fisheries. 
on the anterior margin of each segment The fifth cirrus has branches of 33 and 27 segments. The 
posterior edges are set with minute spines The outer branch has three pairs of large and one of small 
spines along the anterior border. There are two or three very unequal spines posteriorly at each 
suture, and one or two between the sutures. There is also a row of short spines along the inner face 
of the ramus. The inner branch has longer segments, with more spines along the anterior border — 
as many as 6 or 7 pairs. There are two rows along the inner face of the ramus (fig. 2, D, 12th segment 
of inner ramus and 13th and 14th segments of outer ramus of cirrus v). 
The terminal appendages (fig. 2, A) have 6 segments, with very few bristles except for a group of 
long ones at the apex. Its length, not measuring the apical bristles, is 2.25 mm. 
At Albatross station 4901, southwest of the Goto Islands, Eastern Sea, 139 fathoms, a minute 
barnacle was taken, which I believe to be the young stage of S. japonicum or some closely related form. 
It is figured on plate x, figures 6, 7, 8. The capitulum is 6.3 mm. long. The carina is separated from 
the tergum and upper latus by a narrow chitinous space, the other plates being closely juxtaposed. 
There is a narrow rostrum. The umbo of the inframedian latus is near the lower third. The carina 
has a rather broad roof. The peduncle has rather large scales, sparse except on the dorsal side. If 
mature this barnacle would be thought a member of the group of Scalpellum idioplax; but its characters 
are just what one would expect in young of the 5 . japonicum group. The specimen is no. 38688, U. S. 
National Museum. 
Scalpellum japonicum biramosum. New subspecies. [PI. xi, fig. 1, 2, 3.] 
Type no. 38686, U. S. National Museum. 
Type locality: Albatross station 4972, south of Hondo Island, Japan, 33 0 25' 45" N., 135 0 33' E-, 
440 fathoms. 
This form was associated with the two specimens of 5 . japonicum described above. It differs 
from them in the following respects: The umbo of the carina is nearer the upper end of the plate. 
The upper latus has a lobe extending down along the scutal border; this lobe is bifid on the right 
(fig. 1), simple on the left side (fig. 2). The hour-glass-shaped inframedian latus is less excavated 
along its upper border than in japonicum. The rostral latus is much higher. The rostrum is reduced 
to a punctiform vestige. The peduncle has 10 longitudinal rows of about 7 scales each. Length of 
capitulum 17.5 mm., width 9.3 mm., length of carina 17 mm., diameter at base 2 mm. Length of 
peduncle 4 mm. 
Whether this form will prove to be within the range of normal variation of 5 . japonicum or not 
remains to be determined by future collections. 
Scalpellum molliculum. New species. [PI. xi, fig. 4, 5.] 
Type no. 38687, U. S. National Museum. 
Type locality: Albatross station 4967, south of Hondo Island, Japan, 33 0 25' 10" N., 135 0 37' 20” 
E-, in 244 fathoms. 
A species allied to S. curiosum and 5 . japonicum. The oblong capitulum is widest in the middle, 
tapering toward both ends, the occludent and carinal margins about equally arched. The calcified 
portions of the valves are white, the chitinous portions yellowish. The very thin cuticle is nowhere 
hairy. 
The scutum has an arcuate occludent margin, and a short projection at the tergo-lateral angle. 
The baso-lateral margin is rounded. 
The tergum is V-shaped, the occludent limb narrower and much shorter than the carinal. 
The carina is regularly and strongly arcuate, with a flat roof and slightly projecting angles. The 
sides are narrow, a little wider above; they meet above the umbo, which is removed a very short 
distance from the upper end of the plate. 
There is no externally visible rostrum. 
The upper latus is triangular, the umbo quite near the apex. The carinal margin is very short, the 
basal margin irregular. 
