. Bulletin. Natural history; Natuurlijke historie. 104 PEABODY MUSEUM BULLETIN 26. Figure 54. Conchoecia borealis Sars. a-c. lateral, ventral and posterior views of immature male, mm long, d, endopodite of second antenna of immature male, e, capitulum of frontal organ of immature male. Scale at upper right for a-c; at lower right for e; at left for d. Scales in ram. Conchoecia dichotoma Miiller (?) (Figure 55) Conchoecia dichotoma Muller, 1906a, p. 111. PI. XXIV, Figs. 23-29, PI. XXV, Fig. 1; 1912, p. 87. DESCRIPTION. Five specimens obtained in two of the deeper hauls cannot be definitely
. Bulletin. Natural history; Natuurlijke historie. 104 PEABODY MUSEUM BULLETIN 26. Figure 54. Conchoecia borealis Sars. a-c. lateral, ventral and posterior views of immature male, mm long, d, endopodite of second antenna of immature male, e, capitulum of frontal organ of immature male. Scale at upper right for a-c; at lower right for e; at left for d. Scales in ram. Conchoecia dichotoma Miiller (?) (Figure 55) Conchoecia dichotoma Muller, 1906a, p. 111. PI. XXIV, Figs. 23-29, PI. XXV, Fig. 1; 1912, p. 87. DESCRIPTION. Five specimens obtained in two of the deeper hauls cannot be definitely assigned to this species, since most of the females of the Mollis group have not been adequately described, and, unfortunately, no mature males were taken. Miiller's (1906a, p. Ill) description of C. dichotoma may be summarized as follows: The height of the female shell is about half the length, tapered anteriorly. The posterior and dorsal margins form a right angle with a moderately rounded point, the posterior margin is slightly swollen, the posterior ventral corner strongly rounded. The surface of the shell usually has indistinct sculpture, con- sisting of parallel lines which can cross and form diagonal fields. The sculpture is clearest in the anterior half of the ventral margin. The male shell is somewhat elongated, not tapered anteriorly. The right asymmetrical gland is displaced slightly dorsally. Lateral corner glands are present in both sexes, on the right near the asymmetrical gland. A medial dorsal gland is present only in the male; in the female in its place there is a group of three or four gland cells which are not. 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 Peabody Museum of Natural History. New Haven : The Museum
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