. Annual report. 1st-12th, 1867-1878. Geology. 416 GEOLOGICAL SUEVEY OF THE TERRITORIES. P Plate XXII, fig. 1, provisionally represents the freshly hatched larva of Artemia gracilis, which we observed at Great Salt Lake, Utah, the drawing having been made from an al- coholic specimen. On comparing it with Claus' figure of the wd fr^ty hatched larva or Nauplius of the European Branchijpus stagnalis (Fig. 47) the first antennse are seen to be much shorter; the second pair with much shorter and smaller setae; while the mandibles are nearly destitute of seta3. Moreover the body is segmented be- hi
. Annual report. 1st-12th, 1867-1878. Geology. 416 GEOLOGICAL SUEVEY OF THE TERRITORIES. P Plate XXII, fig. 1, provisionally represents the freshly hatched larva of Artemia gracilis, which we observed at Great Salt Lake, Utah, the drawing having been made from an al- coholic specimen. On comparing it with Claus' figure of the wd fr^ty hatched larva or Nauplius of the European Branchijpus stagnalis (Fig. 47) the first antennse are seen to be much shorter; the second pair with much shorter and smaller setae; while the mandibles are nearly destitute of seta3. Moreover the body is segmented be- hind the mandibles. Our Salt Lake Ar- temia differs from the figures of the Euro- pean Artemia salina in the shorter first anten- „ ,„ ., J?T. .,. * ? , ^ ? * nre: in the shorter and Fig. 43.—Advanced larva of Limnadia hermanni, lettering as in fig. 7,, , „ ,, 42. sh, carapace valves; int, intestine; I, liver, ranch enlarged. After Smaller SetfC 01 tne Lerebouiiet. second antennae. But a single larva was, however, observed, and our figure is, though a camera drawing, subject to future 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 Geological and Geographical Survey of the Territories (U. S. ); United States. General Land Office; United States. Dept. of the Interior. Washington, Govt. Print. Off.
Size: 1437px × 1738px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1860, bookpublishe, booksubjectgeology
