DISCUSSION OF SPECIES AND THEIR DISTRIBUTION. 157 



Family SACCOPHARYNGIDyE, Gill. 



Saccopharyngoidei, Blekker, Tentameu, 185D, xxxili (Family, 169). 

 S(iccoi)li(iri/ii(jiiia, (iUNTHEit, Cat. Fish. Brit. Mus., viii, 22. 



Succoplwi-yiujidii; Gill, Arr. Fam. Fi.sh., 1872, 21 (No. 205); Nature, xxix, 1884, 235; Proo. U. 8. Nat. 

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



Lyomeri with the branchio-aual portioa much longer than the ro.stro-branchial ; the 

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

 with the jawbones moderately extended backward (in comparison with the Eurypharyngidai), 

 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 bnt broad. 



SacGopharynx is considered by Dr. (liinther to consist of "deep-sea congers," but evi- 

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



SACGOPHARYNX, Mitehill. 



Saccopharynx, Mitchill, Ana. Lye. Nat. Hist. N. Y., i, 1824, 86 (type, Sacmpharynx flagellum, Cnvier). — 



GCnthkr, Cat. Fish. Brit. Mus., viii, 22; Challeuger Reijort, XXII, 1887, 255. — Gill, op. cit., 46. 

 Ophiognathufi, HarwooI), Phil. Trans. Royal Soc, 1827, 52. 



Saceopharyngids with the dorsal and anal tin.s continued backwards and confluent with 

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



Front View op IIeaii of Saocopuary.nx. 



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

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



SACC0PH.4RYNX FLAGELLUM, Mitchill. (Figures 178, 179, 180.) 



Saccopharynx, Mitchill, Ann. Lye. Nat. Hist., New York, i, 1824, 82. 



Saccopharynx flayelhim, ("Mitchill.")— CuviER, R(>gne Animal, 2d ed., 1829, ii, 3.55.— Gunther, Cat. Fish. 



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

 Ophioynuthus ampullaccus, Hakwoou, Phil. Trans., 1827, 52, pi. vii. Figs. 1-4. 

 Saccopharynx ampiiUaceus, RicnARi>.soN, Fauna Boreali-Amerioana, 1836, in, 271.— Gunther, Challenger 



Report, xxii, 1887, 256, pi. Lxvi. 



Both jaws are armed with slender, curved,widely set teeth, ii-regularly 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 filament. The small pectoral fin 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. 

 (Gunther.) 



Of this genus five specimens have been captured; described l)y 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. 



