1115 



THE SHAGREEN SKATE (-sw. oukkockan;. 



];aja Fn.LOMCA. 



Fig. 320 and I'lato I„ fig. 1. 



Length of the s>ioHt about l:i — 14 % of that of the Jiodi/ or ■i0~^4 % of the breadth of the disk. Distance 



between each nostril and the tip of the snout about 17 % of the said breadth or nearly twice {175 — 300 % of) 



the inlernasaJ iridtli. Acidej t/roored. Xo aciiici in the median line of the back and tail. 



X 





\ 



^^ 



Fig. 320. Shagreen Skate {Rnja fiiUonicfi). ?. ', nat. size. The Caltegat, July, 183.5. B. FniES 



outer aspects, b, a dermal aculeus. 



tooth, magnified, lateral and 



Syn. Raja aspera nostras, the White Horse dicta, Willughfi., Hist. 

 Pise, p. 78; R.4y, Si/nops. Met/i. Pise, p. 26. Raja toto 

 dorse aculeato, duplici ordine aculeorum in canda, simpli- 

 cique ad oculos, Art., Ichth., Gen. Pise, p. 72; Si/ii. Pise, 

 p. 101. Shagreen Rai/, Penn., Brit. Zool. (ed. 1776), vol. 

 Ill, p. 77. 

 Raja Fullonica, Lin., Sijst. Nat., ed. X. torn. I, p. 231; 

 Rathke in Asc.\N., Icon. Rer. Nat., ad. tab. XLIII; Fk., Vet. 

 Akad. Handl. 1838, p. 150, tab. II, fig. 2, tab. Ill, figg. 5 

 et 9; Mull., Hle, Plagiost., p. 145; Kr., Danm. Fislc., 

 vol. Ill, p. 996; NiLSS., Shand. Fna, Fish:, p. 737; Yarr., 

 Brit. Fish., ed. 2, vol. II, p. 578; Gthr, Cat. Brit. Mus., 

 Fish., vol. VIII, p. 467; Coll., Forh. Vid. Selsk. Chrnia 

 1874, Tilla;gsh., p. 217; 1879, No. 1, p. 106; N. Mag. 

 Naturv. Chrnia, Bd 29 (1884), p. 119; Malm (Leucoraja), 

 Gbgs, Boh. Fna, p. 609; Winth. (Raja), Naturh. Tidskr. 

 Kbhvn, ser. 3, vol. XII, p. 61; Day, Fish. Gt. Brit., Irel., 

 vol. II, p. 342, tab. CLXX; Lillj., Sv., Norg. Fisk.. vol. Ill, 

 p. 569. 

 Raja chagrinea, Mont., Mem. Wern. Nat. Hist. Soc, vol. II, 

 p. 420, tab. XXI; Paen., ibid., vol. VII. p. 431, tab. XLI; 

 Couch, Fish. Brit. IsL. vol. I, p. 117, tab. XXIX; Mok., 

 Hist. Nat. Poiss. Fr., tom. I, p. 401 ; Doderl., Man. Ittiol. 



Medit., fasc. Ill, p. 172: Caeus, Prodr. Fnte Medit., vol. II, 

 p. 521. 

 Raja aspera, Flmng, Brit. Anini., p. 172. 



The ordinary dimen.sions of the Shagreen Skate, 

 as it is brought home by the deep-sea fishermen of 

 Bohusliin from the fishing-banks off Jutland and Nor- 

 way, are a length of al)out 1 ni. and a bi-eadth of about 

 6 dm. At this size it has reached full sexual maturity. 

 According to Moreau its length varies between 8 and 

 12 dm. 



The form of the disk is rhoniI)ic. The distance 

 from the tip of tlie snout to the hind margin of the 

 ventral fins is about ecjual to the gi-eatest breadth of 

 the bodv. The anterior side-margins of the disk are 

 undulate, somewhat concave, so that the most promi- 

 nent margin of tlie head falls short of the line between 

 the tip of the snout and that of eitiier pectoral fin. 



