662 MR. G. A. BOULENGER ON [DeC. 20, 



CORYPH^NID^. 



101. CoRYPHiENA HIPPURUS, L. 



' ScOMBRID.«. 



102. Scomber kanagxjrta, Cuv. 



103. Scomber janesaba, Blkr. 



104. Thynnus thynnus, L. 



One specimen, which is 4 feet long, has 10 finlels. 



lO.T. Thynnus thtjnnina, C. & V. 



106. Thynnus pelamys, L. 



107. Cybium commersonii, Lacep. 

 5 feet long. 



108. Elacate nigra, B1. 



TrACHINIDvE. 



109. Percis nebulosa, Q. & Gr. 



110. Percis alboguttata, Gthr. 



111. SiLLAGO sihama, Forsk. 



1 12. Opisthognathus muscatensis, sp. n. (Plate LIV, fig. 1.) 



D. 25-27. A. 15-17. 



Teeth in a broad villiform band near the symphysis, with an outer 

 series of enlarged and somewhat curved teeth continued along the 

 rami. Length of head not quite one fourth of total ; diameter of 

 orbit one fourth the length of the head ; interorbital space three 

 fifths the diameter of orbit ; maxillary extending to about halfway 

 between the orbit and the base of the pectoral, widening posteriorly. 

 Body much compressed, its depth more than twice its diameter, and 

 contained five to five and one third times in the total length. 

 Dorsal of equal depth throughout. Lateral line ending below the 

 fourteenth or fifteenth dorsal ray. Pectorals about two thirds the 

 length of ventrals, which nearly equals the length of the postorbital 

 part of the head. Brown, with darker spots of unequal size ; head 

 specked or vermiculated with blackish ; upper jaw bordered with 

 black ; pectoral greyish, with the membrane colourless ; the other 

 fins blackish ; dorsal with some light spots and rings, and a large, 

 oval, black spot, surrounded by a light ring, between the third and 

 seventh rays. 



Total length 12 inches. 



Three specimens, in spirit. 



BATRACHlDiB. 



113. Batrachus grunniens, L. 

 JB. trispinosus, Gthr. 



