. Bulletin of the Bureau of Fisheries. Fisheries; Fish culture. 20i> HULLKTIN OF THE 15UREAU OF FISHERIES. Length of the wall at base mm., breadth 12 mm., height 12 mm.; length of the aperture mm. The mandibles (fig. 3. d) have three rather small but strong teeth and a bluntly irregular den- ticulate lower projection. The maxillae (fig. 3, c) have two strong spines al)ove. the margin excavated lielow them, then becoming convex, the lower angle being broadly rounded. The edge bears about 8 spines, the lower ones stronger, and there is a tuft of line bristles below the lower extremit
. Bulletin of the Bureau of Fisheries. Fisheries; Fish culture. 20i> HULLKTIN OF THE 15UREAU OF FISHERIES. Length of the wall at base mm., breadth 12 mm., height 12 mm.; length of the aperture mm. The mandibles (fig. 3. d) have three rather small but strong teeth and a bluntly irregular den- ticulate lower projection. The maxillae (fig. 3, c) have two strong spines al)ove. the margin excavated lielow them, then becoming convex, the lower angle being broadly rounded. The edge bears about 8 spines, the lower ones stronger, and there is a tuft of line bristles below the lower extremity. The first pair of cirri (fig. 3, a) have very unequal rami, the longer or anterior branch of about 23 nor- mal segments, and al)OUt twice the length of the shorter ramus, which is composed of 11 segments, all of ihem strongly protuberant on the forward side. The second pair of cirri has rami of 13 and 12 joints, , strongly protuberant on both branches. The third cirri have longer and more slender rami of 16 and 15 joints, which protrude moderately in front. The anterior ramus is the longer. The fourth, fifth, and sixth pairs of cirri are much more slender, long, and curled, the rami subequal. Tliere are about 36 joints in the liranches of the sixth pair (fig. 3, b). The penis (fig. 3. B i is rather short fur a Balanus, closelv 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. Bureau of Fisheries. Washington, D. C. : Govt. Print. Off.
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