EGGS AND LARV^3 OF TELEOSTEANS. 125 



There is here another example of a family in which some genera produce 

 adhesive, others pelagic, ova. 



Div. X. Acanth. Blenniiformes. 



Fam. 1. Cepolid^e. 



„ 2. Heterolepidotid^e. 

 „ 3. Blenniidje. 



The ova of Anarrhichas lupus have been discovered by Prof. M'Intosh to be 

 deposited in February ; they are large, heavy, and non-adhesive, and the larvae, 

 when hatched, are well advanced in development (see Nature, June 17, 1886). 



The ova of Blennius galerita, according to Day, are adhesive, and attached 

 to the under surface of stones. 



Blennius pholis also deposits adhesive ova, which are attached to small 

 caverns in the rocks of the sea-shore. 



The ova of Blennius are stated by Hoffmann to possess processes extend- 

 ing from the zona radiata. 



The ova of Centronotus gunnellus, according to W. Anderson Smith, are 

 deposited from February to April. The ova are adhesive, and form a spherical 

 mass about the size of a walnut ; this ball is quite free, and both parents lie 

 coiled round it. 



In Zoarces viviparus the ova are retained during development within the 

 cavity formed by the coalesced ovaries. Breeding takes place in the winter 

 months, chiefly in December, January, and February. Specimens in which the 

 young were ready to be born were obtained on the shore at Granton in 

 February and March. The young at parturition are about 1^ inches long, and 

 in all respects, except size, similar to the parents. I met with several 

 specimens in which the young in the ovary had been killed by some cause or 

 another, and when the cavity was cut into, their bodies were discovered in a 

 shrunken state, but not decomposed. 



Fam. 4. MastacembelidjE. 



Div. XL ACANTHOPTERYGII MuGILIFORMES. 



Fam. 1. Sphyr.enid,e. 

 „ 2. Atherinid^e. 



Several stages of Atherinichthys notata, Gunther (Chirostoma notata, Gill), 

 are figured by Agassiz in Young Stages, pt. iii. In the youngest the embryonic 

 fin-fold is still unaltered, but the yolk sac is absorbed, and the mouth open. 



