144 Mtrn-'ExiDiE. 



Leptocephalus altiis, Richarch. Voy. Ereh. lif Terr. Fish. p. 61, pi. 30. 

 tiga. 8-10. 

 Like the preceding form, but with rudimentary pectoral fins. 

 Teeth strong. 



For completeness' sake we have to mention the following forms, 

 which are very insufiiciently known : — 



1. Leptocephalus stenops, Kaup, Apod. p. 150. — Messina. — Eyes 

 unusually large and close together. 



2. Leptocephalus dussumieri, Kaup, Apod. p. 151, fig. 17. — Malabar. 



HYOPRORUS. 



Ilvoprorus messinensis, Kolliker, Verh. jihi/s. nied. Ges. W'urzh. iv. 

 "1854, p. 101 ; Kaup, Apod. p. 144, fig. 4.' 



Body much compressed and elevated ; head narrow, long ; snout 

 long, with the upper jaw longest (as in Ntttastoma). Teeth ex- 

 tremely minute. Nostrils as mNettasfoma. Pectorals very small*; 

 vertical tins conspicuous. Vent in advance of the middle of the 

 total length. Gill-openings narrow. Elood red. 



Messina. 



Mr. Gill refers (in my opinion very justly) this fish to Nettastoma. 

 (See p. 48.) 



TILURUS. 



Oxystomus liyalinus, Rafinesque. 



Leptocephalus trichiurus, Corro, Giorn. Sc.Lett. •l^- Art. <SV«/. Palermo, 



18-29, xxvi. p. 138. 

 Tilurus gongenbauri, Kolliker, Verh. phi/s. med. Ges. Wiirzh. iv. 1854. 



p. 100. 



tricliiurus, Kaup, Apod. p. 145, fig. 5. 



. rissoi, Kaup, Apod. p. 14(3. 



Body much compressed and elongate ; tail terminating in a 

 thread. Head compressed, small, with the snout acutely pointed 

 and of moderate length, the lower jaw being the longer. Both jaws 

 toothed. Gill-openings wide. Intestine terminating far behind, at 

 a point where the body is very narrow. Pectorals very small. 

 Dorsal fin a broad fold of the skin, distinct from the nape ; anal a 

 very low fold. 



Mediterranean. 



a, b, e, d, e, f, [/. Numerous examples from Messina. 



All these examples are remarkably alike in shape and in size. I 

 do not know of any fish to whicli Tilurx(s could be referred. It 

 evidently does not belong to the family Murasnida^. 



* There is a curious passage in Dr. Kaup's description,/, c, viz. " What Pro- 

 fessor Stummein mentions as representing pectorals." There is no sucli individual 

 as Professor Stnmmeln ; and the explanation of tlic passage is probably this, 

 that Professor Kolliker describes the pectoral fin as a " kiciner Stuniincl " — that 

 is, a small rudiment. 



