44 Mr. C. T. Regan on the 



3. Spinax pusillus. 



Acanthidium pusillum, Lowe, Proc. Zool. Soc. 1839, p. 91. 



Spinax pusillus, Giinth. Cat. Fish. viii. p. 425 (1870) ; Vaill. ' Travail- 



leur ' et < Talisman ' Poiss. p. 72 (1888). 

 Etmopterus pusillus, Carlos de Braganca, Res. Inv. 'Amelia,' ii. p. 65, 



pi. ii. tig. 2 (1904). 

 Etmopterus frontimaculatus, Pietschmann, Ariz. Ak. Wien, 1907, p. 395. 



Hab. Mediterranean and neighbouring parts of the At- 

 lantic ; Japan. 



In the British Museum fourteen specimens (including two 

 from Misaki, Japan), 190 to 300 mm. in total length, from 

 depths ranging down to 343 fathoms. 



4. Spinax hillianus. 



Spinax hillianus, Poey, Mem. Cuba, ii. p. 340 (1861). 



Etmopterus pusillus, Goode & Bean, Mem. Mus. Comp. Zool. xxii. 



1896, p. 10, pi. ii. tig. 5. 

 Etmopterus spinax, Garni. Mem. Mus. Comp. Zool. xxvi. 1899, p. 27. 



Hab. West Indies (Cuba; St. Christopher, 208 fathoms). 



Goode and Bean's figure shows the pelvic fins nearly equi- 

 distant from the base of the pectoral and the lower caudal 

 lobe ; according to Garman the dermal denticles are spinate. 



5. Spinax princeps. 



Etmopterus princeps, Coll. Forh. Vid. Selsk. Christiania, 1904, no. 9, 

 p. 3 ; and Rep. Nonveg. Fisb. ii. no. 3, p. 29, pi. i. tigs. 1, 2 (1905). 



Hab. Near the Faroe Islands, in deep water (750 to 1100 

 metres) . 



Apparently closely allied to S. granulosus, but the dermal 

 denticles with shorter and stronger spines. 



6. Spinax granulosus. 



Spinax granulosus, Giinth. ' Challenger ' Deep-sea Fish. p. 19, pi. ii. 



tig. C (1880). 

 Etmopterus villosus, Gilb. Bull. U.S. Fish. Conirn. 1903, p. 580, pi. lxvi. 



(1905). 



Pacific, in deep water (Chile, 120 fathoms; Hawaii, 222 

 to 498 fathoms). 



In the British Museum the type, a specimen of 255 mm. 



From the description and figure the type of K. villosus 

 appears to differ only in features due to its smaller size 

 (170 mm.), i. e. head a little longer, interspace between the 

 dorsal fins a little shorter, &c. Similar differences may be 

 seen in S. niger. 



