.'iO. CEXTROPHOKCS. 423 



0. Centrophorus ringens. 



Scymnodou ringens, liociuje 4- Cai)Mo, I'roc. Zovl. Sue. 1864, p. 203, 

 tig. 5, and Pei.i: Playiust. p. 31, tab. 1. fig. 1. 



Labial groove extending for some distance along the margins of 

 both jaws. Upper teeth very small and narrow, lanceolate; the 

 lower more or less erect, triangular ; only the lateral are somewhat 

 inclined backwards. The distance between the nostrils is one-half 

 of the length of the praeoral portion of the snout. Lower angle of 

 the pectoral iin rounded, not produced. Dorsal spines feeble, but little 

 projecting beyond the skin. Anterior dorsal fin much shorter llian 

 the second, the length of its base (without the spine) being about 

 one-fourth of its distance from the second dorsal. Extremity of the 

 ventral fins behind the end of the second dorsiil. Scales pedunculate, 

 each with three strong ribs, each of which terminates in a point be- 

 hind. Uniform brownish black. 



Coasts of Portugal. 



a. Fine female specimen, 33 inches long. Presented by Prof. J. V. 



E. du Socage. 



7. Centrophorus calceus. 



Acantliidium calceus, Lowe, Proc. Zool. Soc. 183'J, p. 92, and Trans. 



Zool. Sue. iii. p. 10. 

 Centrophorus calceus, Lowe, Proc. Zool. Soc. 1843, p. 93. 

 crepidalbus, Bocaqe i^- Capello, Proc. Zool. Soc. 1864, p. 262, 



fig. 2, and Peix. Plaglost. p. 28, tab. 2. fig. 1. 



The labial fold extends for some distance along the margin of the 

 jaws. Snout spatulate, much produced, the distance between the 

 nostrils being less than one-thii-d of the length of the pra3oral por- 

 tion of the snout. Lower angle of the pectoral fin rounded, not 

 pi'oduced. The length of the bases of the two dorsal fins (without 

 the spines) is nearly equal, and one-half of the distance between 

 them. E.xtrcmity of the ventral fins below the middle of the second 

 dorsal fin. The scales are small, tricuspid, and so minute as to give 

 a velvety appearance to the skin. 



Coast of Portugal ; Madeira. 



«. Female, 33 inches long. Portugal. Presented by J. V. E. du 

 Bocage. 



b, c. Females, 38 inches long. Madeira. Presented by J. Y. John- 



son, Esq. 



p. Dorsal spines hidden beneath the fhiii : Centioscyninus. 



y. Centrophorus coelolepis. 



Centroscymnus ccclolepis, Bocage ^- CapcUo, P'oc. Zool. Soc. 18G4, 

 p. 263, fig. 4, and Pcix. Plagiust. p. 30, tab. 2. fig. 3 ; Wright, Ann. 

 ^ 3Iag. iVf/i. Hist. 1868, ii. p. 426. 



Labial groove prolonged forwards, but separated by a broad space 

 from that of the other side. Upper teeth very small, narrow, and 

 lanceolate. The distance between the nostrils is rather less than 



