. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. BIGELOW: COASTAL WATER EXPLORATION. 155 habits of Sagitta, which, in its centers of active propagation and growth, devours the Calanus and other copepods. The following records of oceanic and tropical species completes the list of chaetognaths: — Sa^^/f/»ia (p. 138), from Station 10352, 10368, hauls from 450 meters or deeper: Sagitta enflata, Station 10393, surface: Eukrohnia hamata, Stations 10352, 10368, 10384, 10393, 500-0, and 450-0 meters. Pteropods? The warm water pteropods and heteropods so num- •€,' /.
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. BIGELOW: COASTAL WATER EXPLORATION. 155 habits of Sagitta, which, in its centers of active propagation and growth, devours the Calanus and other copepods. The following records of oceanic and tropical species completes the list of chaetognaths: — Sa^^/f/»ia (p. 138), from Station 10352, 10368, hauls from 450 meters or deeper: Sagitta enflata, Station 10393, surface: Eukrohnia hamata, Stations 10352, 10368, 10384, 10393, 500-0, and 450-0 meters. Pteropods? The warm water pteropods and heteropods so num- •€,' /. Fig. 51.— Occurrence of pteropods 0 # = Limacina balea, July-August. O = Lima- eina balea, October-November. X, warm water species of Limacina. L, Cliont limacina. erous along the slope in 1913, were represented in 1916 only by one species of Limacina," from Stations 10370, 10382, 50-0 meters, and 10386. The boreal Limacina balea (Fig. 51) occurred sparingly on the slope of Georges Bank (Station 10351) and in the Calanus zone on the Shelf south of New York (Stations 10370, 10382), as well as in the Gulf of Maine (p. 133, Stations 10342, 10344). Audits presence 1 Identified by Mr. W. F. Clapp. 2 L. rangii or L. Lesuewii, but the condition of the specimens precludes positive 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 Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
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