. Höhere Krebse von New York City. Krebstiere. 134 NEW YORK STATE MUSEUM eine sehr komplette Beschreibung seiner Lebensgeschichte, Gewohnheiten etc. und eine vollständige Literaturliste sind in der Zeitung von Herrick oben zitiert gefunden werden. Cambarus bartonii (Fab) Crayfish Astacus b a r t o n n i i Fabricius. Ent. Syst. Sup. 1798. S. 407. DeKay. /. C. 1844. S. 22, PL.8, Abb. 25. Cambarus bartonii Hagen, H. A. Mus. Comp. Zool. Mem. 1870. v. 2, Nr. 1, S. 75. Faxon, W. Mus. Comp. Zool. Mem. 1885. v. 10, Nr. 4. Huxley, T. H. die Krebse. Dies ist der berühmte Krebse und ist die einzige Art der Gattung bisher gefunden in Neuen

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. Higher Crustacea of New York city. Crustacea. 134 NEW YORK STATE MUSEUM A very complete description of its life history, habits etc. and a full literature list are to be found in the paper of Herrick's cited above. Cambarus bartonii (Fab.) Crayfish Astacus b a r t o n n i i Fabricius. Ent. Syst. Sup. 1798. p.407. DeKay. /. c. 1844. p.22, pl.8, fig.25. Cambarus bartonii Hagen, H. A. Mus. Comp. Zool. Mem. 1870. v.2, no. 1, p.75. Faxon, W. Mus. Comp. Zool. Mem. 1885. v. 10, no.4. Huxley, T. H. The Crayfish. This is the well known crayfish and is the only species of the genus so far found in New York city, so that it is unnecessary to give any description of it. The genus is moreover a very perplexing one, and any one making a study of it should consult the works of Hagen and Faxon mentioned above. Crayfishes are found under stones in the beds of small brooks or in springs, where the}- lie with their heads and antennae out, waiting for a small fish or a worm and ready to spring back at any sign of danger. In larger brooks with muddy banks the}- make burrows and are indeed a considerable nuisance in canals, as they undermine the sides, sometimes causing disastrous cave ins. They either walk slowly along the bottoms on the tips of their legs, with the large chelae held straight out in front, or propel them- selves backward through the water in a series of leaps, bv the bend- ing of the abdomen with its fanlike fin. The eggs are large, and the young do not undergo any meta- morphosis, being hatched in a form very similar to the adult.. Fig. 6 Cambarus bartonii. 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 work.. Paulmier, Frederick Clark, 1873-1906. Albany, New York State Education Department

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