4. MAUROLICUS. 380 



truly Seopeloid, the intermaxillary reaching " to the angle of the 

 mouth," and the maxillary being prolonged beyond it. It will be dif- 

 ficult to say "where the angle of the mouth is situated in this genus, 

 the lower jaw being received between the very broad lateral branches 

 of the upper. However, when the mouth is opened to its full extent, 

 it may be seen that the maxillary actually forms a part of the margin 

 of the cleft of the mouth ; it is toothed in the same manner as the 

 intermaxillary, and the whole structure is the same as in many Clu- 

 peoids and as in Oonostoma, a fish which does not appear to have 

 been known to Miiller. Even some of the teeth of Maurolicus are a 

 little larger than the others, reminding us of the canine teeth of 

 Gonostoma. 



The species may be referred to two divisions : — 



a. Phosphorescent organs appearing as impressions in the skin, p. 389'. 



/3. Phosphorescent organs slightly prominent, sitting on black globular 

 bodies, p. 390. 



a. Phosphorescent organs appearing as impressions in the skin. 



1. Maurolicus borealis. 



Argentine, Pennant, Brit. Zool. iii. p. 286. pi. 65. no. 156 ; Lozc, Faun. 



Oread, p. 225. 

 Scopelus humboldtii, Yarrell, Brit. Fish. 1st ed. ii. p. 94 , and 2nd ed. 



ii. p. 161 ; Clarke, Mag. Nat. Hist. 1838, January ; JDekay, Fauna 



New York, Fish. p. 246. pi. 38. fig. 121 (very bad, probably copied 



from Yarrell). 

 borealis, Nilss. Observ. Zool. p. 9, and Shand. Faun. Fisk. p. 479; 



Cuv. $ Val. xxii. p. 438. 

 pennantii, Cuv. $• Val. xxii. p. 436 ; Yarrell, Brit. Fish. 3rd ed. i. 



p. 330. 

 Maurolicus mulleri, Krbyer, Danmarks Fisk. iii. p. 113. 



D. 11-12. A. 10-12 + 18. V. 7. 



The height of the body is contained four times and four-fifths in 

 the total length (without caudal), the length of the head thrice and 

 a half or thrice and two-thirds. The origin of the dorsal fin is con- 

 siderably nearer to the root of the tail than to the extremity of the 

 snout, above the base of the ventral ; its last ray is in the vertical 

 from the origin of the anal. The luminous spots appear as mere 

 impressions, and do not sit upon a black globular body ; there are 

 twelve pairs between the throat and the ventral fins, without those of 

 the isthmus. 



North Atlantic. 



a. Many specimens, from 1 to 2| inches long. Redcar. Presented 

 by the Rev. T. S. Rudd. 



