. Text-fig. 22. Swimbladders of Lampanyctus gnentheri (a) lateral view of anterior half, and L. alatus (b), ventral view of anterior half, gg, gas-gland; op, opening of oval into main cavity of swimbladder; ov, oval; ra, retial artery; rv, retial vein; rm, rete mirabile. (a, x 27; B, x 22-5.) Lampanyctus pusillus (Johnson) St. 1602, 17° 59-9'S., 04° 27-1'E., 27. x. 35, TYFB, i7s(-o)m. Reg. no. 389-91. Standard length 22 mm. (3-0 x 0-5 mm.). St. 100 C, 330 20-330 46' S., 15° 18' -15° 08' E. 4. x. 26, TYF, 25oo-20oo(-o) m. Reg. no. 762-3. Standard length 33 mm. (6
. Text-fig. 22. Swimbladders of Lampanyctus gnentheri (a) lateral view of anterior half, and L. alatus (b), ventral view of anterior half, gg, gas-gland; op, opening of oval into main cavity of swimbladder; ov, oval; ra, retial artery; rv, retial vein; rm, rete mirabile. (a, x 27; B, x 22-5.) Lampanyctus pusillus (Johnson) St. 1602, 17° 59-9'S., 04° 27-1'E., 27. x. 35, TYFB, i7s(-o)m. Reg. no. 389-91. Standard length 22 mm. (3-0 x 0-5 mm.). St. 100 C, 330 20-330 46' S., 15° 18' -15° 08' E. 4. x. 26, TYF, 25oo-20oo(-o) m. Reg. no. 762-3. Standard length 33 mm. (6-5 x 1-5 mm.). The swimbladder of this species lies over the posterior half of the stomach and extends beyond it as far as the level of insertion of the pelvic fins. In both specimens the sac is considerably relaxed. The retia mirabilia originate to the left of the anterior tip of the swimbladder and extend back- wards to the gas-gland, which covers the forward part of the floor. Close examination of the 33-mm. fish revealed that each rete has a different length. The inner one supplies an anterior lobe of the gas- gland, the middle one a middle lobe and the outer one a posterior lobe. Their lengths in the order given are 3-0, 2-3 and i-8 mm. An oval is present on the roof of the sac above the forward part of the retia.
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Keywords: ., bookcentury1900, booksubjectocean, booksubjectscientificexpediti
