. Bulletin - United States National Museum. Science. CAPRELLIDAE OF WESTERN NORTH ATLANTIC 109 82° 81*. "Gill"Cruise 3 • Phtisica present O Phtisica absent 33° 30' 29' 27" 26' 25* 73 Figure 56.—Distribution of Phtisica marina in plankton samples taken on cruise 3 of the M/V Theodore N. Gill. peraeopods 1-5 forming or united to well developed side-plates. Pleon consisting usually of 7 free segments, carrying 3 pairs of pleopods and usually 3 pairs, at least 1 pair, of uropods; uropod 1 always with 2 rami. Eyes varying in size and form, 0-4 in number. Hepato-pancreatic tubes 4, ra
. Bulletin - United States National Museum. Science. CAPRELLIDAE OF WESTERN NORTH ATLANTIC 109 82° 81*. "Gill"Cruise 3 • Phtisica present O Phtisica absent 33° 30' 29' 27" 26' 25* 73 Figure 56.—Distribution of Phtisica marina in plankton samples taken on cruise 3 of the M/V Theodore N. Gill. peraeopods 1-5 forming or united to well developed side-plates. Pleon consisting usually of 7 free segments, carrying 3 pairs of pleopods and usually 3 pairs, at least 1 pair, of uropods; uropod 1 always with 2 rami. Eyes varying in size and form, 0-4 in number. Hepato-pancreatic tubes 4, rarely 2; rectal glands 2 or 1, sometimes rudimentary. Heart with 3 pairs, rarely 1 pair, of ostia. Nerve-chain with 4 ganglia in pleon-segments 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. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off.
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