660 



H. SCHIFF AND N. SCHÔNENBERGER 



Lane, H. C. et H. J. Huggel. 1969. L'innervation cholinergique de la veine et de l'artèn 

 alaire digitale de la chauve-souris. ( Rousettus aegyptiacus ) . J. Physicl 

 (Paris). 61: 330-331. 



Peristiany, J. G., H. C. Lane et H. J. Huggel. 1969. Analyse ionique du sérum de la 

 chauve-souris (Rousettus aegyptiacus) et l'élaboration d'une solution 

 (C.S.I.) pour la perfusion de la veine alaire digitale. J. Physiol. (Paris). 

 61: 370-371. 



Schônenberger, N. et H. C. Lane. 1971. Quelques données sur le cordon nerveux digital 



alaire des Megachiroptères ( Rousettus aegyptiacus et Pteropus gigan- 



teus). Rev. suisse Zool. 78: 650-654. 

 Venable, J. H. et R. Coggeshall. 1965. A simplified citrate stain fer use in électron 



microscopy. J. Cell Biol. 25: 407-408. 

 Weideman, M. P. 1955. Ejfect of denervation of diameter and reactivity of arteries in the 



bat wing. Circulation Research (6). 13: 618-622. 



N° 30. H. Schiff and N. Schônenberger. — Preliminary data for 

 the élaboration of the visual code in Squilla mantis 1 . 

 (With 6 figures) 



This research is concernée! with the transformation of the nerve code in 

 successive ganglia mainly through a one way channel. For this purpose a short 

 survey was given about the structure and the corresponding frequency patterns 

 in the ganglia and nerve fibers of the eye of Squilla mantis. 



Though the literature about arthropod eyes is quite extensive (Bernhard, 

 1967; Wolken, 1970 for reviews of the existing literature), it seems that the 

 compound eye has not as yet been studied from our présent point of view, i.e. as 

 a one way ganglionic chain. Papers pointing somewhat in this direction are 

 those by Wiersma (1966), Wiersma and Yamaguchi (1966, 1967), Hamori and 

 Horridge (1966a, />), Braitenberg (1970) and Strausfeld and Braitenberg 

 (1970). Some récent papers are concerned with the comparison between intra- 

 cellular recordings from the retina and the lamina (Scholes, 1969; Mote, 1970tf, b), 

 certain movement-dependant fibers in the medulla externa (Collett, 1970), 



1 Avec l'aide du fonds Claraz. 



1 We thank Mrs. M. Schônenberger for the drawings of figure 1. 



