ON THE STRUCTURE OF THE ANTENN. 583 
Krapelin says the great variety of special sensory structures 
which have been described on the antennz, or sunk beneath 
their surface, resolve themselves into ‘ organs of a single type, 
a more or less developed, free, or deeply-seated seta, con- 
nected by a wide pore canal with a multi-nucleated (?) ganglion 
cell, which sends an axis cylinder into the seta.’ 
264. BURMEISTER, H., ‘Beobachtungen iiber den feineren Bau des 
Fiihlerfachers der Lamellicornier (Scarabeoiden) als eines mutmass- 
lichen Geruchwerkzeuges.’ Zeitung fiir Zoologie, Bd. i., 1848. 
265. PERRIS, E., ‘Mémoire sur le siége de l’odorat dans les Articulés. 
Ann. Sc. Nat., sér. iii., Zool., tom. xiii., 1850. 
266. Lrspis, C., ‘Mémoire sur Pappareil auditif des Insectes.’ Ann. Sc. 
Nat., sér. iv., tom. ix., 1858. 
267. CLAPAREDE, E., ‘Sur les prétendus Organes auditif des Antennes 
chez les Coléopttres.’ Ann. Sc. Nat., sér. iv., tom. x., 1858. 
This work is an answer to the views of Lespés. 
268. Hicks, B., ‘On a New Structure in the Antenne of Insects.’ Linn, 
Soc. Journ., Zool., vol. xxii., 1857. 
269. Leypic, F., ‘Ueber Geruchs- und Gehérorgane der Krebse und 
Insecten.’ Miiller’s Archiv Jahrg., 1860. 
An important anatomical investigation of the olfactory pits and cones 
in the antenne and palpi. 
270. GRABER, V., ‘Ueber neue otocystenartige Sinnesorgane der 
Insecten. Archiv f. Micros, Anat., Bd. xvi., 1879. 
271. MAYER, P., ‘Sopra certi Organi di Senso nelle Antenne dei ditteri.’ 
Atti Reale Acad. Lincei., tom. ii, 1877-78. 
272. HAUSER, G., ‘Physiologische und histologische Untersuchungen 
uber das Geruchsorgan der Insecten.’ Zeitsch. f. w. Zool., Bd. xxxiv., 
1880. 
273. KRAPELIN, K., ‘Ueber die Geruchsorgane der Gliederthiere, eine 
historisch-kritische Studie.’ Oster-Programm der Realschule des 
Johanneums. Hamburg, 4to., 1883. 
This paper gives a bibliography of fifty-nine papers, and the author 
has reviewed the whole critically. As most of the papers recited are 
rather of historical than scientific interest, all but the most important 
have been omitted in the present list. 
274. SazEPIN, B., ‘ Ueber den histologischen Bau und die Vertheilung der 
nervosen Endorgane auf den Fiihlern der Myriopoden.’ Mém. de 
PAcad. Imper. de St. Pétersbourg, tom. xxxii., 1884. 
275. DAHL, F., ‘Das Gehor- und Geruchsorgane der Spinnen.’ Archiv f. 
Micros. Anat., Bd. xxxiv., 1885. 
276. Luppock, Sir J., ‘On the Senses, Instincts, and Intelligence of 
Animals, with Special Reference to Insects.’ Internat. Sc. Ser., 
8vo., London, Paris and Berlin, 1888. 
277. RULAND, F., ‘ Beitrage zur Kenntniss der antennalen Sinnesorgane 
der Insecten. Zeitsch. f. w. Zool., Bd. xlvi., 1888, 
