1104 Wisconsin Academy of Sciences, Arts, and Letters. 



C. FIMBRIATUS Fischek. 



Plate LXXXI, figs. 3-7. 



1853. Cyclops fimbriatus Fischer, p. 94, pi. Ill, figs. 19-28 and 30. 



1863. " crassicornis Sars, p. 256. 



1870. " Gredleri Heller, p. 74, pi. I, figs. 3 and 4. 



1872. " pauper Fric, p. 223, fig. 20. 



1875. " crassicornis Uljanin, p. 39, pi. VIII, figs.9-16, pi. XII, fig. 1. 



1878. " crassicornis Brady, p. 118, pi. XXIII, figs. 1-6. 



1880. " Popjjei Rehberg. p. 550, pi. 6, figs 9-11. 



1880. " fimbriatus Rehberg, p. 548, pi. VI, figs. 7 and 8. 



1882. " " Vejdowsky, p. 63, pi. VII, figs. 9, 10 and 13. 



1882. " crassicornis Herrick, p. 232, pi. IV, figs. 9-14. 



1884. " fimbriatus Herrick, p. 162, pi. R, fig. 11. 



1885. " " Daday, p. 262. 



1885. " margoi. Daday, p. 264, pi. III. figs. 20-25. 



1886. " fimbriatus Vosseler, p. 192. pi. VI, figs. 4-8. 

 1888. " crassicornis Sostaric, p. 75, pi. II, figs. 23 and 24. 



1890. " fimbriatus Lande, p. 79, pi. XXI, figs. 166-169. 



1891. " " Schmeil, p. 35. 



1891. " " Brady, p. 25, pi. IX, fig. 1. 



1891. " " Richard, p. 238, pi. VII, figs. 13 and 14. 



1892. " " Schmeil, p. 161, pi. VII, figs. 8-13. 



1892. " " Lande, p. 173. 



1893. " " Marsh, p. 218, pi. VI, figs. 8 and 9. 



1895. " " Herrick, p 121, pi. XVII, figs. 8 and 9, pi. XXI, 



fig. 11, pi. XXV, figs. 9-14. 



1897. " " Steuer, p. 7. 



1901. " " Lilljeborg, p. 94, pi. VI, figs. 12-14. 



1903. " " Graeter, p. 503, pi. 15, fig. 1. 



1909. " " Byrnes, p. 33, pi. XV, figs. 3-7. 



Cephalothorax (Plate LXXXI, fig. 3) oval, its breadth being 

 a little more than two-thirds of its length. The cephalothorax 

 is about one and seven tenths as long as the abdomen ex- 

 clusive of the furcal rami. Each segment of the cephalo- 

 thorax projects somewhat over the succeeding segment. 



The last cephalothoracic segment is armed laterally with 

 rather long hairs. 



The anterior part of the first abdominal segment is some- 

 what larger than the posterior part. The last segments are 

 armed posteriorly with spines. 



The furcal rami (PI. LXXXI, fig. 6) are commonly slender, 

 slightly curved in outline, and with their outer extremities 



