DISCUSSION OF SPECIES AND THEIR DISTRIBUTION. 157 



Family SACCOPHARYNGID.^, Gill. 



Sacrophnrt/ngoidei, Bleeker, Tentameu, 1859, xxxii: (Family, 169). 

 Saccopharyngina, Gunther, Cat. Fiah. Brit. Mus., viii, 22. 



Saccopharyngidce, Gill, Arr. Fam. Fish., 1872, 21 (No. 20.5); Nature, XXIX, 1884, 235; Proo. U. S. Nat. 

 Mus., VII. 1884, 62-3.— Jordan and Gilbert, BuU. xvi, U. S. Nat. Mus., 365. 



Lyomeri with the branchio-anal portion much longer than the rostro branchial ; the 

 tail excessively elongated and attenuated ; the cranium unknown ; the eyes antero-lateral ; 

 with the jawbones moderately extended backwaixl (in comparison with the Eurypharyngidaj), 

 and apparently not closable against each other; with enlarged teeth in one or both jaws; 

 with the dorsal and anal fins feebly developed, and with pectorals small but broad. 



SncoopharyHx is considered by Dr. Giinther to consist of "deep-sea congers," but evi- 

 dently it is not at all related to the congers or any other allied hshes, (GUI.) 



SACCOPHARYNX, Mitchill. 



Saccophariinx, Mitchill, Ann. Lye. Nat. Hi.st. N. Y., i, 1824, 86 (type, Saccopliarijux flagelliim, Cuvier). — 



Glntiikr, Cat. Fish. Brit. Mus., viii, 22; Challouger Report, XXII, 1887, 255. — Gill, <>;). cit., 46. 

 Ophiognatlms, Harwood, Phil. Trans. Royal Soc, 1827, 52. 



Saccopharyngid.s with the dorsal and anal fins continued backwards and confluent with 

 a slightly developed caudal fin [ ?], and with the lower jaw toothless. 



Front View of Head of Saccopharvnx. 



We unite the various forms of Saccopharynx under one specific name, pending the 

 discovery of new material which may render an intelligent discussion possible. 



SACCOPHARYNX FLAGELLUM, Mitchill. (Figures 178, 179, 180.) 



Saccopharijnx, Mitchill, Ann. Lye. Nat. Hist., New York, I, 1824, 82. 



Saccopharynx flageUaiii, ("Mitchill.")— Cuvier, R&gue Animal, 2d ed., 1829, ii, 355.— GOnther, Cat. Fish. 



Brit. Mus., viii, 22.— Johnson, Anu. and Mag. Nat. Hist., 1862, x, 279.— Gill, loc. cit., 64. 

 Ophiogiialhm ampullacem, Harwood, Phil. Trans., 1827, 52, pi. vii, Figs. 1-4. 



Saccopharynx ampnllaceus, Richardson, Fauua BoreaU-Americana, 1836, ill, 271. — GOnther, Challenger 

  Report, XXII, 1887, 256, pi. LXVI. 



Both jaws are armed with slender, curved, widely set teeth, irregularly uniserial orbiserial, 

 their points being directed inward. The length of the jaws is from one-third to one-seventh 

 of the length of the body; that is, the distance from the vent to the extremity of the snout. 

 The dorsal fin commences a long way behind the head and a short distance in front of the 

 vent; like the anal it may or may not reach the end of the tail, which terminates in an 

 extremely delicate and thin tilauient. The small pectoral tin with some thirty very thin 

 rays. Gill-opening an elongate slit. A bluish-white line runs on the back along each side 

 of the base of the dorsal fin, and a similar line is sometimes distinct along the anal fin. 

 (Giinther.) 



Of this genus five .specimens have been captured; described by Dr. Giinther as follows. 

 There may, of course, be two species, for it is not certain that Mitchill and Harwood both 

 saw the same form. 



