42 DR. A. GUNTHER ON [Jail. 14, 



Arnoylossus lophotes. 



Dorsal rays. Anal rays. 



Drj typical specimen no. 1 95 77 



no. 2 96 76 



no. 3 102 81 



Lundy Island specimen in spirit 99 79 



Specimen from Palermo ,, 98 75 



Arnoglossus grohmanni. 



Specimen from Kenmare River in spirit . . 86 64 



„ Dalmatia ,, . . 85 65 



„ Nice no. 1 „ . . 84 64 



„ 2 „ .. 88 61 



„ „ 3 „ . . 88 62 



» 



4 „ .. 84 65 



It is difficult to understand why Mr. Day in his paper makes no 

 reference whatever to the most striking distinctive character, viz. 

 the prolonged dorsal rays. Bonaparte and Canestrini distinctly say 

 that in A. grohmanni the second dorsal ray is prolonged, and so it is 

 in the six specimens hefore me, in the youngest as well as oldest. In 

 A. lophotes the four or five anterior rays are prolonged ; and there 

 is no difference in this respect in the five specimens before me, in 

 the smallest as well as in the largest. No author mentions a pro- 

 longation of fin-rays in the common British species of Scald-fish, 

 Arnoglossus laterna, which, besides, has a conspicuously smaller eye 

 than A. lophotes (see Plate III. figs. B, C), as may be seen from the 

 following measurements : — 



A. laterna. A. lophotes. 



Total length 187 mm. 174 mm. 



Horizontal diameter of eye 7h mm. 9| mm. 



Total length 120 mm. 136 mm. 



Horizontal diameter of eye 5| mm. 8 mm. 



Also the maxillary is somewhat shorter in A. lophotes than in A. 

 laterna. 



I add now a complete diagnosis of A. grohmanni, drawn up from 

 specimens preserved in spirit : — 



D. 84-88. A. 61-65. P. 9. L. lat. 51. 



The greatest width of the body is contained twice and one third 

 in the total length (without caudal), the length of the head four 

 times. The upper profile of the head descends rapidly downwards, 

 there being a considerable space between the upper eye and the upper 

 profile. Eyes of moderate size, one fourth of the length of the head and 

 equal to the length of the snout ; eyes separated by a sharp ridge, the 

 lower somewhat in advance of the upper. Mouth oblique and rather 

 narrow, with prominent lower jaw and with the maxillary not extending 

 to below the middle of the eye. The length of the maxillary is one 



