Mr. A. Alcock on [lulian Bathijhial Fishes. 351 



tive propoitioiis of the trunk ; and iVom Alexeterion by tliia 

 last character and by tlie well-developed eyes. It must be 

 borne in mind, however, that both Bellotia and Alexeterion 

 were described from specimens under 50 millim. in length, a 

 consideration wliich may well lead us to doubt tlie ultimate 

 correctness of separating these three closely allied forms. 

 Lamprogranwius, with its crested scaly head, its Halosaurus- 

 like lateral line, and its very diiferently arranged viscera, is, 

 I venture to think, quite distinct both from Hephthocira and 

 from the other two genera of the alliance. 



Family Macruridae. 



Macrurus, Bloch. 



Subgenus Macrueus, Giintlier. 



(). Macrurus investigator is ^ Alcock. 



7. Macrurus semiquincunciatus^ Alcock. 



8. Macrurus rnacrolophus^ Alcock. 



Specimens of all of the above, which were originally 

 described in the Ann. & Mag. Nat. Hist, for November 1889, 

 were dredged at Station 131, 410 fathoms. 



9. Macrurus Hextii. 

 Macrurus Hextii, Alcock, Anu. & Mag. Nat. Hist., Oct. 1890, p. 299. 



A large female specimen, nearly 23 inches long, from 

 Station 122, 865 to 880 fathoms. 



The ovaries are of moderate size and quite smooth and 

 homogeneous on section. 



A transverse section of an ovary, magnified, shows an 

 external investment, about 1'20 millim. thick, of compact 

 fibrous tissue, in which numerous large blood-vessels are 

 imbedded, giving off internally fine loosely woven dissepi- 

 ments to carry small blood-vessels into the substance of the 

 ovary, the developing ova in their follicles being clustered 

 round these dissepiments like grapes on a bunch. There is 

 thus, even at this early stage, almost no interfoUicular stroma. 



The ova in the sections examined vary in diameter from 

 •05 to "5 millim., the most usual diameter being "lb millim. 



Such an ovum lies in a follicle which it completely fills. 

 The wall of the follicle is formed by a few fine fibres of con- 

 nective tissue lined internally by a laj'cr of very small flat- 

 tened hexagonal cells, which in transverse section look like 



