ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 541 



real and partly apparent. The real differences appear due to the amount 

 of cartilage persisting, and thus the actual form of the bones depends on 

 the extent to which ossiti cation had proceeded. The apparent differences 

 are due to the pressure to which these bones have been subjected. This 

 is particularly noticeable in the vertebraj, the centra of which may be 

 shortened to nearly half their length without fracture or further dis- 

 tortion. These facts have been made clear only by a comparison of a 

 number of skeletons. 



New Species of Goby from the Mediterranean.* — J, Pellegrin and 

 Louis Fage describe, from about 70 m. depth to the north of the 

 Balearic Isle, Cabrera, a new species of goby, the first of the genus 

 Eleotris, from the Mediterranean. Five examples were found measuring 

 from 19 to 25 mm. One proved to be a mature female, so that these 

 minute forms are to be regarded as adults. The new species is named 

 Eleotris balearkus. M. Pruvot states that these small fishes were found 

 amongst calcareous alg^e, where also certain minute Annelids and other 

 small species occur, and suggests that there is some relation between the 

 alga3 and the dwarfing of these forms of life. 



Origin of Tactile Barbules in Genus Mullus.f — Salvatore Lo 

 Bianco has traced the development of these barbules. Very clearly he 

 shows how, by a gradual shifting forward and differential growth, the 

 first pair of branchiostegal rays become transformed into the tactile chin 

 barbules of the adult. 



Tunicata. 



Ascidians of Cape Verde. | — J. Rennie and H. Wiseman describe 

 the Ascidians collected by Cyril Crossland at Cape Verde. Although a 

 fairly abundant supply of material was secured, it has not proved 

 particularly rich in species. Ten forms were collected, two of which are 

 new, viz. SarcohotnjUoides parvum and Amaroucium crossJandii. 



Sense-organ in Salpidge.§ — F. Todaro describes a terminal organ 

 of the lateral nerves corresponding to the nerve-buds in the lateral 

 canals of fishes, as described by Leydig. This organ is situated dorsally 

 at the right side of the brain and optic organ, anterior to the first pair 

 of body muscles, and has been observed in Belicosalpa virgola, in Scdpa 

 punctata, and S. maxima. 



INVERTEBRATA. 



Mollusca. 

 o- Cephalopoda. 



Antarctic Histioteuthid.|l — W. E. Hoyle reports a larval histio- 

 teuthid, the only Cephalopod (apart from mandibles from the stomachs 



* Bull. Soc. Zool. France, xxxii. (1907) pp. 11-12. 

 t Atti Reale Accad. Lincei, xvi. (1907) pp. 577-86 (8 figs.). 

 X Proc. Zool. Soc, 1906, pp. 903-11 (2 pis.). 

 § Atti Reale Accad. Liucei, xvi. (1907) pp. 575-6. 



II National Antarctic Expedition, ii. (1907). Mollusca. I. Cephalopoda, 2 pp. 

 Ifig. 



