120 ]\rASTACEMBRLID-li. 



its distance from liead about S^- times length of latter. Snout 3 times 

 as long as eye, ending in an appendage which is nearly twice as 

 long as eye ; mouth extending to below anterior border of eye ; a small 

 prteorbital spine ; two pnieopercular spines. Dorsal XXVl-XXX 80 ; 

 distance between first spine and head about f length of latter. Anal II 

 80. Caudal rounded. Pectoral about ^ length of head. Scales very 

 small, 20 between origin of soft dorsal and lateral line. Purplish grey 

 above, yellowish beneath, sides wuth a dark network the meshes of 

 which widen towards the caudal; dorsal and anal fins dark purplish 

 with a light edge, with whitish spots towards the caudal. 



Total length 290 millim. 



Liberia. — Type in Leyden Museum *. 



Fie:. 73. 



JJustacembeliis loennheiyii. 

 Type. 



8. MASTACBMBELUS LOENNBEllGII. 

 j\fastacemhehis cn/ptacantlivs (non Giintli.), LiJnn}). Ofvers. Yet.-Aknd. Fijih. 



Stockholm, 18'.t5, no. 3, ]). 181. 

 M^i(stacembelvs loennhergii , Bouleng. Tr. Zool. Soc. xv. 1808, p.i23, and Proc. Zool. 



Soc. 1902, ii. p. 329, pi. xxix. fig. 3 ; Pellegr. Poiss. Bass. Toluul, p. 138, fig. 



(1914). 



Depth of body 13 to 17 times in total length, length of head 7 to 9 

 times. Vent nearly equally distant from end of snout and from caudal, 

 its distance from head 2f to o\ times length of latter. Snout 3 times 

 as long as eye, ending in an appendage which is about \\ times as 

 long as eye ; mouth extending to below posterior nostril ; an erectile 

 spine below posterior nostril ; 2 or 3 strong opercular spines. Dorsal 

 XXVIII-XXXII 100-130 ; spines short, last scarcely longer than 

 eye ; distance between first spine and head \ to ^ length of latter. 

 Anal II 100-130. Caudal obtusely pointed. Pectoral about \ length 

 of head. Scales very small, 15 to 18 between origin of soft dorsal and 

 lateral line ; latter formed of a few tubules, widely separated from one 

 another. Uniform brownish with an ill-defined darker lateral band, or 

 spotted with darker and lighter, the lower parts of the sides sometimrs 



* 1 am indebted to the kindness of Mile. Dr. 0. L. Popta for notdS on this specimen. 



