LVCODIN^. 



95 



Under Lyceiichclys imirama (p. 83 — 86) I have described this form in detail and indicated its 

 independence from L. innrccna. 



In my preliminar\' notice on the LycodincE of the Ingolf Expedition (1. c.) the present form is 

 given as a Lycenchelys^ with the addition however that it would seem most natural to remove it and 





Fig. 29— 30. Lycodonus flagellicauda, seen from the side aud above, "x i. 

 Scales are omitted, likewise the small bony plates along the bases of the unpaired fins. The two rings over the upper figure 



represent the form of a cross-section at the place indicated. 



Fig. 31 — 33. Head of Lycodoiius flagellicanda, seen from above, the side and below. X 5/j. 



make it into a separate genus. On further research I find this supposition strengthened: ; Lycenchelys» 

 flagellicauda (and the following species, L. ophidiicm) are of one geniis with Lycodonios Goode & Bean. 



The genus Lycodoiius was founded in 1883 by the American ichth}-ologists Goode & Bean 

 (Bull. Mus. Comp. Zool. X, No. 5, p. 208) with a single species: L. mirabilis. In 1895, when this fish was 

 again mentioned by the same authors in their work Oceanic Ichthyology) (p. 312), a considerable 

 number of specimens had been taken off the coast of New England, in deep water (721 — 1309 fathoms). 

 Our Musemn possesses two specimens presented by the Smithsonian Institution, so that I can judge 

 of it from personal observation. 



The two most important peculiarities, which in my opinion, specially characterise the genus 

 Lycodonus, are shared in common by this species and L. flagellicauda (and the succeeding Z. c»^/^/i3?/«/«) : 

 first and foremost, the number of the branchiostegal rays, which is onl\- 5 on each side (in Lycenchelys 



