134 . MR. G. A. BOULENGER ON [Feb. 16, 



2. Third Account of the Fishes obtained by Surgeon-Major 

 A. S. G. Jayakar at Muscat, East Coast of Arabia'. 



By G. A. BoULENGER. 



[Eeceived January- 19, 1892.] 



Two further collections received from Mr. Jayakar in 1891 

 enable me to supplement the list of Muscat Fishes with the names 

 of seventeen species, of which one {Hisliopterus tijpus) belongs to a 

 genusv previously unknown from the Indian Ocean. 



TELEOSTEI. 



ACANTHOPTERYGII. 

 PERCIDyE. 



1. Serranus hoevenii, Blkr. 



2. HiSTlOPTERUS TYPUS, Schlcg. 



This fish is on record from Japan only ; but a fine specimen from 

 Duke-of-York Island is preserved in the British Museum. The 

 genus Histiopterus is an important addition to the fauna of the 

 Indian Ocean, and it seems surprising that so striking a form should 

 have hitherto escaped notice on the coasts of India and Ceylon, 

 where it will no doubt be eventually found. 



SpARIDjE. 



3. Box LiNEATUS, sp. n. 



D. ||. A. |j. L. lat. 70. L. tr. ^. 



Length of head a little more than one fourth of the total (with- 

 out caudal) ; diameter of the eye a little greater than the length of 

 the snout, two sevenths the length of the head. Pectoral three 

 fourths the length of the head. Depth of the body thrice and one 

 third in the total length (without caudal). Caudal deeply forked. 

 Upper half of body greyish olive, lower half yellow ; four rather 

 indistinct dark lines along each side of the body, the uppermost 

 running along the lateral line ; a black spot in the upper axillar 

 portion of the pectoral. 



Total length 250 miUim. 



A single specimen. 



This species is very nearly related to the Atlantic and Mediter- 

 ranean Box vulgaris^ from which it differs in the deeper body, the 

 somewhat larger scales, and the slightly different number of rays. 

 The fin-formula and the axillar spot differentiate it from Cuvier 

 and Valeuciennes's B. salpoides, stated to be from the Indian Ocean. 



4. PiMELEPTERUS FUSCUS, C. & V. 



' Cf. p. Z. S. 1889, pp. 23G-24G. 



