82 DEEP-SEA FISHES OF THE ATLANTIC BASIN. 



CERATOSCOPELUS MADERENSIS (Lowe). (Figure 91.) 

 Scojxiue madermsis, LoWK, Proc. ZoiiL Soc, 1839, 87; 1850, 250; Trims. Zoiil. Soc, III, 14 (types from Ma- 

 deira, now preserved in the British Museum).— Hai-taele, Mitt. Zoiil. Stat. Naples, i.\, 184, PI. vii, Fig. 

 9.— LiiTKEN, Vid. Med. Naturh. Foreu., 1891, 208.— GUnther, Cat. Fisli, Brit. Mas., v, 412. 

 Scopelus l}ona})artii, CuviEU and Valenciennes, Hist. Nat. Poiss., xxu, 449.— .Ioiinson, Ann. and Mag. Nat. 

 Hist.. X, 18G2, 281 (specimens from Madeira). 



Height of body onc-fiCth of total leugtb ; Icugth of head uearly one- third. Least height 

 of tail nearly one-half greatest height of body. Snont moderate. Mouth large, oblique; 

 jaws eiiual. Maxillary very slightly expanded behind. Ventral reaches to vent, and pec- 

 toral almost as far back as ventral. Anal origin under about nineteenth scale of lateral line. 



Radial formula: 1).13; A. 12; L. lat. 34-30 (36 in the specimen examined). 



This species, as described by Lowe from Madeira, and afterwards obtained by Johnson 

 from the same locality, has also been found in the Mediterranean. The National Museum 

 has specimens from Messina, presented by the Koyal Zoological Museum of Florence. A 

 single specimen (No. 32811, U. S. N. M.) examined by us was obtained by the Aibatross 

 •from station 2014, iu 36° 41' 05" K lat., 74° 38' 55" W. Ion., at a depth of 373 fathoms, in 

 1883. The range of this species is thus extended westward nearly 4,000 miles. 



Two individuals (No. 21690, U. S. N. M.; No. 190, Gloucester Donations), the longer 

 80 millimeters in length, the other 68 millimeter.s, were taken by one of the Gloucester fish- 

 ing vessels on the fishing banks. Also, No. 21689, U. S. N. M. (No. 219, Gloucester Dona- 

 tions), 75 millimeters in length. Additional specimens (No. 2897S, U. S.N. M.), in very bad 

 condition, were taken by the Fish Rnwlc from station 1038, in 39° 58' N. lat., 70° 06' W, 

 Ion., at a depth of 146 fathoms. An example (No. 28934, U. S. N. M.), 72 millimeters in 

 lengtb, was taken by the Fish Eaicl: from station 1031, in 39° 57' N. lat., 09° 19' W. Ion., at 

 a depth of 255 fathoms; two (No. 33564, U. S. N. M.), from station 2101. in 39° 18' 30" N. 

 lat., 68° 24' W. Ion., at adepth of 1,686 fathoms; and a single individual (No. 43810, U. S. 

 N. M.), from station 1044, in 38'= 37' N. lat., 73° 12' W. Ion., at a depth of 224 fathoms; 

 another (No. 43776, U. S. N. M.), from station 2528, surface (electric light). 



NOTOSCOPELUS, Gunther. 

 Kotoscopehq. Gunthek, Cat. Fish. Brit. Mus., v, 1884, 405, 411 (as subgenus). 



Myctophids, with tbe dorsal fin much longer than the anal, and overlapping the anterior 

 half of the latter. Body elongate. Snout obstusely conical; jaws equal in front; cleft of 

 mouth nearly horizontal ; maxillary not dilated behind. No luminous glands on head or tail. 

 Arrangement of photophores irregular: anterolaterals, 1 or none; mediolaterals, 2 or 3; 

 posterolaterals, 1, 2, or 3. Precaudals 2+1, the last one high up, and between the flap of 

 the oi)erculum and the lateral line. 



The type of this genus is Lampanycttis resplendcns, Eichardson. The Eigenmanns have 

 set apart as a new genus, under the name " Gatahlcmella,'" a form characterized by the low 

 pectorals," the type being Notoscopelus hrachyckir. (Proc. Oal. Acad. Sci., 2d ser., iii, 24.) 



The National Museum has specimens from Nice (Cat. No. 40057, IT. S. N. M.), sent by 

 the Eoyal Museum at Florence, labeled " Scopelus elongatus,''^ which evidently belong to this 

 genus, having 21 rays in the dorsal, 17 or 18 in the anal, the height of the body contained 

 5 times in its length, and the eye one-fourth the length of the head. They would appear to 

 be closely related to J\r. resplcndens, which, however, has not hitherto been announced from 

 the Mediterranean. This form is evidently that described and figured by Costa. 



KEY TO THE SPECIES OF NOTOSCOPELUS. 

 I. Mediolaterals 3, iu curved, subvertical line. Posterolaterals 2-3. 

 A. Posterolaterals 2, horizontally side by side. Precaudals 2-|-l. 



1. Last posterolateral in advance of soft dorsal. Pectoral strong, falcate. 



a. D. 21-24; A. 18. L. Lat. 38. Superanals 16 N. resplendens. 



2. Posterolaterals under soft dorsal. Pectoral weak and short. 



a. D. 21; A. 20. L. lat. 42. Superanals 8+8 N. quercinus. 



b. D. 16; A. 14. L. lat. — . Superanals 9+7 N. MARGAJtiTiFERUS. 



