. Bulletin - United States National Museum. Science. THE SESSILE BARNACLES. 199 spines between the upper pair and the large lower spine, anil two below the latter. First cirrus (fig. G2«) with rami of 18 and 8 segments, the poste- rior ramus less than half the length of the anterior. Cirrus ii short, with rami of 9 and 8 segments. Cirrus iii with slightly unequal rami of about 10 segments each. There are some minute trifid, mul- tifid and rarely simple spinules on the anterior distal part of all the segments of both rami (fig. 62Z') ; also a few observed on the anterior ramus of cirrus iv. Pos
. Bulletin - United States National Museum. Science. THE SESSILE BARNACLES. 199 spines between the upper pair and the large lower spine, anil two below the latter. First cirrus (fig. G2«) with rami of 18 and 8 segments, the poste- rior ramus less than half the length of the anterior. Cirrus ii short, with rami of 9 and 8 segments. Cirrus iii with slightly unequal rami of about 10 segments each. There are some minute trifid, mul- tifid and rarely simple spinules on the anterior distal part of all the segments of both rami (fig. 62Z') ; also a few observed on the anterior ramus of cirrus iv. Posterior cirri have three pairs of spines on the segments, with some minute ones near the bases of tlie Fig. 62.—Balaxds hesperius, off Sakhalin Island, a, 1st ciurus. b, 3d segment of ANTERIOR RAMUS OF CIRRUS III. C, LABRUM AND PALPUS. rf, REVERSE SIDE OF PALPUS. e, MAXILLA. Another lot having broad scuta and a ribbed wall was taken by Lieut. Geo. M. Stoney in latitude 60° 22' north, longitude 168° 45' west. BALANUS HESPERIUS KIPPONENSIS, new subspecies. Plate 49, fig. 6. Type.—Cat. No. 48191, , from Albatross station 3768, off Daikohu Saki, main island of Japan, 25 to 27 fathoms, surface temperature 64° F., June 5, 1900. Parietes smooth; walls otherwise as in the smooth form of Z>. hes- 2^erius. Scutum having the basal margin about as long as the tergal margin or longer; the external growth ridges close. Tergum narrow toward the spur. Both opercular valves are very thick (fig. 63). The labrum has three teetli on one side, two on the other. JMandible (tig. Qld) having the teeth acute. Maxilla hardly notched under the two great spines, and Avith six other spines, one. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States National Museum; Smithsonian Institution; United States
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