336 
BULLETIN OF THE BUREAU OF FISHERIES. 
Brocher, Frank — Continued. 
1912. Recherches sur la respiration des insectes aquatiques adultes. Lea Elmiddis. Ibid., T. 5, 
pp. 136-179, 23 figs. [Stated on p. 178 that Haliplus, after having inhaled through the 
posterior abdominal spiracles, exhaled beneath the coxal plate, the reverse of the expla- 
nation given by Matheson.] 
1912a. L’appareil stridulatoire de VHydrophilus piceus et celui du Berosus sericeps. Ibid., pp. 
215-217, 3 figs. [In stridulating the lateral margin of the second abdominal segment 
is rubbed against a roughened spot on the linear surface of the elytron.] 
1912b. Recherches sur la respiration des insectes aquatiques adultes. Le Cybister. Ibid., pp. 
218-219. [The two posterior pairs of abdominal spiracles are supplied by a special 
tubular trachea of large diameter, which runs forward to the metathorax alongside the 
regular trachea, the two being united opposite each spiracle by a short branch.] 
1912c. Recherches sur la respiration des insectes aquatiques adultes. L’Hydrophile. Etude 
physiologique et anatomique. Ibid . , pp . 220-258, 22 figs. [The spiracles located between 
the prothorax and mesothorax are the only ones used for inspiration when the beetle is 
in the water, and they communicate by means of the antennae with the film of air that 
covers the ventral surface of the body.] 
1912d. Recherches sur la respiration des insectes aquatiques (imagos). Nepe. Hydrophile. 
Notonecte. Dyticides. Hsemonia. Elmides. Societas entomologica, vol. 27, No. 21, 
pp. 91-93; No. 22, pp. 102-103. Stuttgart. 
1913. Recherches sur la respiration des insectes aquatiques. Etude anatomique et physiolo- 
gique du systeme respiratoire chez les larves du genre Dyticus. Annales, Biologie 
Lacustre, T. 6, pp. 120-147, 11 figs. Bruxelles. [Gave a detailed description of the 
spiracles of the last segment and explained how they are opened and closed by the move- 
ments of the cerci.] 
1914. Observations biologiques sur les Dyticides. Ibid., pp. 303-313, 4 figs. [An attempt to 
answer the questions: Can the elytra be wet? Of what use are the channels in the elytra? 
What is the function of the opalescent white skin secretion?] 
1914a. Recherches sur la respiration des insectes aquatiques adultes. Les Dyticides (second 
article), suivi d’une notice sur les mouvements respiratoires de 1’Hydrophile. Ibid., 
T. 7, pp. 5-39, 12 figs. [A detailed description of the anatomy of the respiratory system 
and the physiology of respiration in two species of Dyticus.] 
Buhk, F. 
1910. Lebensweise und Entwicklung von Spercheus emarginatus Schall. Entomologische Rund- 
schau, Bd. 27, pp. 127-128; 134-136. Stuttgart. 
Burgess, Edward. 
1881. The structure of the mouth in the larva of Dytiscus. Proceedings, Boston Society of Natural 
History, Vol. XXI, 1880-1882 (1883), pp. 223-228, 4 figs. [Showed that the Dytiscus larva 
has a wide and well-developed mouth, although its lips are locked together by a dove- 
tailed joint developed for that purpose.] 
Calwer, C. G. 
1858. Kaferbuch. Allgemeine und specielle Naturgeschichte der Kafer Europa’s. 8°, 738 pp. 
Stuttgart. 
Casper, Alois. 
1913. Die Korperdecke und die Driisen von Dytiscus marginalis L. Ein Beitrag zum feinerem Bau 
des Insektenkorpers. Zeitschrift fur wissenschaftliche Zoologie, Bd. 107, pp. 387-508, 
44 figs. Leipzig. [Divided the glands into offensive, pseudoacinous, and pygidial, the 
first of which are for repelling larger enemies, possibly fish.] 
Cheavin, W. Harold S. 
1914. The water beetle ( Dytiscus marginalis). Knowledge, vol. 37, pp. 222-225, 270-271, 14 figs. 
London. [Most of the figures are excellent photographs illustrating the structure and life 
history of Dytiscus marginalis .] 
Clairville, J. de. 
1798. Entomologie helv6tique, ou catalogue des insectes (Col6opt&res) de la Suisse, ranges d’apr5s 
une nouvelle m6thode avec descriptions et figures. Vol. 1. Rhyncophora. Zurich. 
1806. Idem. Vol. 2. Adephaga. 
