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Proceedings of the Royal Irish Academy i 



Lionurus Guntheri (VailL). 



MacruTus Guntheri, Vaillant, (1888), Collett (1896, 1905), Holt and Byrne 

 (1910), Eoule (1919). 



Macrv,rus sclerorhynchus, Giinther (1887) nee Valenciennes. 

 Macrurus Iwlotrachys, Vaillant (1888) nee Giinther. 

 Cori/phaenoides Gicntheri, Gilbert and Hubbs (1916). 



Fig. 7. — Lionurus Guntheri (after Giinther). 



Eesembles Lionurxis acqvalis in general appearance, but may be dis- 

 tinguislied by its broader and longer head, the inter-orbital space being equal 

 to the vertical diameter of the eye, and the snout equal to its horizontal 

 diameter. 



The scales are of a less specialised type than those of L. aequalis. They 

 bear eight or nine rows of small spinules, the central row being slightly . 

 enlarged. The most posterior spine of the central row alone projects beyond 

 the margin of the scale. The scales of the liead are armed witli long 

 divergent spintdes. 



Eoule (1916) considers this species to be a variety of Ziomorus sclero- 

 rhynckus. Gilbert and Hubbs, on the contrary, put them in separate genera. 

 I have had no opportunity of examining a specimen, but the published 

 descriptions seem to suggest that its proper place is in the genus Lionurus. 



General Distribution. — East side of the N. Atlantic from off Morocco 

 (1,200 fathoms) to the Faeroe Channel (656 fathoms). 



Irish Bistrihuiion. — One small specimen of 13"6 cm., identified by 

 Mr. Holt, was taken by the Hdga in 673-893 fathoms on station S.E. ?>o5, 

 the normal habitat of the species being apparently beyond the range in 

 depth of our investigations. 



