ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 545 



of the epidermis, which bears in its centre a tapering "hair." The 

 distribution of taste-buds is such as to preclude their innervation (save 

 a very Hmited number in the laryngeal region) by anything except the 

 chorda tympani and palatine vii. A large proportion of the fibres 

 carried by these rami are for such sense-organs, their innervation fields 

 being covered for general sensory purposes by the somatic sensory of v. 



Eels and Eel-culture in Valencia.*— A. Gandolfi Horyold gives an 

 interesting copiously illustrated account of eel-culture and eel-fisheries 

 in the Albufera region, and discusses the whole natural history of the 

 eel, including structure, habits and life-history. 



Reproductive Migration of Tunny.f — Louis Roule has studied the 

 movements of Orcynnns thynnus, and finds evidence of a regular seasonal 

 migration to a spawning area. Those that are caught in spring by the 

 Italian and Tunisian fishermen have previously lived in or near French 

 waters, and those that people the Mediterranean off the French coast 

 have their birth-place off the Italian islands and Tunis. There is no 

 evidence of migration from the Atlantic into the Mediterranean. The 

 tunny prefers to keep to waters of the same temperature and salinity. 



Tunicata. 



Indian Museum Tunicata. | — Asajiro Oka deals with seventeen 

 species of simple Ascidians, ten of which are new. These include 

 Monobotryllus violaceus g. et sp. n., especially interesting in its close 

 resemblance to certain compound Ascidians, such as the Botryllidte and 

 the Polystyelidifi. The reproductive organs consist of a number of 

 hermaphrodite polycarps arranged in two rows, one on each side of 

 the endostyle. In the structure and arrangement of the polycarps it 

 comes near Michselsen's 3£onandrocarpa. It connects Styelidse and 

 Polystyelidffi. 



The collection is also interesting on account of its containing five 

 well-preserved specimens of an extremely aberrant simple Ascidian, 

 very probably belonging to the genus Hexacrobylus, of which only one 

 specimen has hitherto been known. The branchial sac is much reduced, 

 narrow, with intact walls without stigmata. The branchial siphon has a 

 quite unique shape — a very short but wide tube bent in a curve, with 

 one end compressed so as to represent a bilabiate mouth, and the wall 

 on the convex side puffed out in the form of a hemispherical dome. 

 Another rarity is a species of Megalocercus — a large Append icularian 

 with voluminous spiracular passages which occupy nearly the middle 

 third of the trunk. 



* Algunes observaciones sobre la anguila en Valencia. An. Inst. Gen. y 

 Tecnico de Valencia, 1916, pp. 1-44 (17 pis.), 

 t Comptes Rendus, clxv. (1916) pp. 35-8. 

 X Memoirs Indian Museum, vi. (1915) pp. 1-33 (5 pis.). 



