22. GINGLYMOSTOMA. 407 



Squalus anniilatus, Nil.is. Prodr. p. 114. 



Scylliorliiuua delarochianus, lihii/iv. Faun. Frati^. p. 74. 



melastomus, {liujinesqw) liluinc. I. c. p. 75. 



Pristiurus melanostonius, Bonap. Faun. Hal. Pcsce ; Miiller ?f Ilenh, 



p. 15, pi. 7 ; Yarrell, Brit. Fish. 2ud edit. ii. p. 375, or 3rd edit. ii. 



p. 479; Dumeril, Elaxmohr. p. 325. 

 .Scylliuiii auiiulatuui, Kihs. 8k(uid. Faun. p. 713. 

 iiielastomum, Jonpis, Man. p. 497 ; Kroy. Damn. Fisk. iii. 



p. 8.32. 

 Pristiurus artedi, Bocaf/e <5* Capello, Peix. Plagiod. p. 11. 

 Plack-moutbed dog-fi.sb, Couch, Fish. Brit. Isl. i. p. 18, pi. 3. 



Nasal valves separated by a broad interspace, nearer to the mouth 

 than to the end of the snout ; a short labial fold round the angle of 

 the mouth. Dorsal fins subequal in size, the second above the hinder 

 part of the anal ; anal fin nearly as long as the head to the first gill- 

 opening. Upper parts with rounded darker spots of various sizes, 

 each with a lighter margin. 



European seas. 



«. Adult (28 inches). North coast of Norway. Purchased of Hr. 

 Brandt. 



b-c. Adult : skins. Great Britain. From Yarrell's Collection. 



d. Adult. Lisbon. Presented by the Eev. R. T. Lowe. 



e-f. Adult and half-grown. Madeira. Presented by the Eov. 11. 

 T. Lowe. 



g, h, i. Adult and half-grown. Madeira. Presented by J. Y. John- 

 son, Esq. 



k. Half-grown. Nice. From Dr. Deakiu's Collection. 



I, m-n. Half-grown. Mediterranean. Purchased. 



22. GINGLYMOSTOMA. 



fTinglymostoma, Miiller Sf Ilcnle, p. 22. 

 Nebrius, Rilppcll, N. W. Fisch. p. (52. 



Two dorsal fins, without spines ; the first above or behind the 

 ventrals ; the second opposite to, and somewhat in advance of, the 

 anal. Eyes very small ; spiracle minute, behind the eye. Nasal and 

 buccal cavities confiuent. The nasal valves of both sides form one 

 quadrangular flap in front of the mouth, each being provided Avith a 

 free cylindrical cirrus. An upper and lower lip, tlie latter not ex- 

 tending across the symphysis. The fourth and fifth gill-openings 

 clo.se together. 



Two subgenera may be distinguished according to the denti- 

 tion : — 



u. Teeth of both jaws in many series, each with a strong median cusp, 



and one or two nuu-h smaller cusps on each side : Ginglymodovia, 



M. & II. — Atlantic and Indian seas. 

 /3. Teeth of both jaws in only a few (three) series, the foremost only being 



in function. Each tooth has a convex, finely and equally serrated 



margin : Nehriu.^, Kiipp. — Indian sea-s. 



