1090 Wisconsin Academy of Sciences, Arts, and Letters. 



From the description it is impossible to establish the identity 

 of virido-signatus of Miss Byrnes, but it would seem that this 

 is probably a larval form of either albidus or fuscus with the 

 chances in favor of albidus. 



CYCLOPS FUSCUS Jurine. 



Plate LXXVII, figs. 1-7. 



1820. Monoculus quadricornis fuscus Jurine, p. 47, pi. II, fig. 2. 



1841. Cyclops signatus Koch, H. 21, pi. VIII. 



1850. " quadricornis var. c. Baird, p. 203, pi. XXIV, fig. 5. 



1857. coronatus Claus, p. 29, pi. I, fig 5, pi. II, figs. 1-11. 



1863. " •* " p. 97, pi. II, fig. 16, pi. X, fig. 1. 



1863. " signatus Sars, p. 242. 



1863. " coronatus Lubbock, p. 199. 



1870. " " Heller, p. 71. 



1872. " " Fric, p. 218, fig. 11. 



1876a. " " Hoek, p. 12. 



1876b. " " Hoek, p. 129. 



1878. " signatus Brady, p. 100, pi. XVII, figs. 4-12. 



1882. " tenuicornis Herrick, p. 227, pi. V, fig. 14, pi. VI, figs. 1-11, 

 and 20. 



1884. " " Herrick, p. 153, pi. R, fig. 16.. pi. Q 4 , figs. 8-11, 



and 21. 



1885. " signatus Daday, p. 208. 



1886. " Vosseler, p. 189, pi. IV, figs. 1-5. 

 188S. " fuscus Sostaric, p. 58. 



1890. " signatus Thallwitz, p. 79. 



1890. " " Lande, p. 33, pi. XV, figs. 1-12. 



1891. " fuscus Schmeil, p. 22. 



1891. " " Richard, p. 223, pi. VI, fig. 6. 



1891. " signatus Brady, p. 6, pi. II, fig. 5. 



1892. " fuscus Schmeil, p. 123, pi. I, figs. l-7b, pi. IV, fig. 2. 



1893. " signatus Marsh, fuscus included under this. 



1895. " signatus var. coronatus Herrick and Turner, p. 106, pi. XV, 



figs. 1-4. 



1895. " fuscus Marsh, p. 16, pi. VI, figs. 5, 7 and 11. 



1897. " coronatus Matile, p. 120, pi. II, figs, 1, 2 and 3. 



1901. " fuscus Lilljeborg p. 44, pi. Ill, figs 12-15. 



1903. " " Graeter p. 473, pi. 15, fig. 37. 



1905. " " Pearse, p. 150, pi. XIV, fig. 12. 



1906. " signatus var. coronatus Byrnes p. 193, pi. VII, figs. 1-6, pi. 



VIII, figs. 1-3. 

 1909. " " " " Byrnes p. 9, pi. II, figs. 1-7, pi. Ill, figs 



1-5. 



The cephalothorax is oval, narrowing decidedly toward the 

 posterior end. Its width is rather more than one-half its 



