On a new Sea- Horse from Muscat. 51 



Genus 4. Perioculodes, G. 0. Sars. 



117. Perioculodes longimanm (Bate). 



1869. Monoculodes longimanus, Bate & West wood, (1) vol. ii. p. 507. 



1870. Monoculodes Grubei, Boeck, (137), p. 85. 



1876. Monoculodes Grubei, Boeck, (138) p. 269, pi. xvi. fig. 1. 

 1883. Monoculodes Grubei, Schneider, I. c. p. 24. 



1887. Monoculodes longimanus, Chevreux, Cat. Crust. Amphip. du 

 Sud-ouest de la Bretagne, p. 13, pi. v. figs. 1, 2. 



1888. Monoculodes tequimanus (Norman, MS.), Robertson, " Contrib. 

 Cat. Amphip. and Isop. of Firth of Clyde," Trans. Nat. Hist. Soc. 

 Glasgow, vol. ii. p. 26 (separate copy), j . 



1889. Monoculodes longimanus, Norman, " Notes on British Amphip.," 

 Ann. & Mag. Nat. Hist. ser. 6, vol. iii. p. 451, pi. xx. figs. 6-9. 



1892. Perioculodes longimanus, G O. Sai's, (142) p. 313, pi. ex. fig. 2, 

 pi. cxi. fig. 1. 



1893. GE-h'ceros longimanus, Delia Valle, (139) p. 547, pi. iv. fig. 9, 

 pi. xxxiii. figs. 32-36. 



Hab. Karnes Bay, Isle of Cumbrae, 1-4 fathoms ; Oban ; 

 off Marsden, Co. Durham, 10 fathoms ; Starcross, Devon, 2-3 

 fathoms; Clew Bay, Co. Mayo {A. M. N.) ; Banff (T. 

 Edward) ; Firth of Forth (T. S.) : Mus. Nor. Upper Locli 

 Fyne and off Spurm Head (T. S.) ; Isle of Man; North 

 Wales; Jersey; Guernsey; Valentia, Ireland (A. 0. W.). 



Distrib. Svolvaer, Lofoten Islands ; Trondhjem Fiord, 

 5 fathoms (A. M. N.) ; South Norway (G. 0. Sars) ; Naples 

 (A. M. N. & Delia Valle) : Mus. Nor. Kattegat (Meinert) ; 

 West France {Chevreux) ; Spezia (G. 0. Sars). 



EXPLANATION OF PLATE III. 



Fig. 1. Amphilochus neapolitanus, Delia Valle. Second gnatkopod. 



Fig. 2. Stenothoe setosa, sp. n. First gnathopod. 



Fig. 3. Ditto. Second gnathopod. 



Fig. 4. Ditto. Last peraeopod. 



Fig. 5. Metopa rubrovittata, G. O. Sars. First gnathopod. 



Fig. 6. Metopa abscisa, sp. n. First gnathopod. 



Fig. 7. Ditto. Terminal joints of first guathopod, more magnified. 



Fig. 8. Ditto. Second gnathopod. 



Fig. 9. Ditto. Palm of second gnathopod, more magnified. 



Fig. 10. Ditto. Last perteopod. 



V. — Description of a new Sea-Horse (Hippocampus) from 

 Muscat. By G. A. Boulenger, F.R.S. 



Hippocampus Jayakari. 



11 segments on the body. All the tubercles produced into 

 long slender spines ; supraorbital spine longer than the 

 diameter of the orbit, longer than the azygous spine in front 



4* 



