42 THE VOYAGE OF H.M.S. CHALLENGEK. 



opercular spines. Tlie bands of vomerine and palatine teetli are very narrow, almost 

 linear. Coloration nearly uniform ; a few indistinct cross liauds ; spinous dorsal with a 

 black margin. Length of specimens, 2 and 8^ inches. Arafara Sea. 



Platycephalus spinosus, Schleg., South of New Guinea. Station 187 ; 6 fathoms. 

 Platycephalus 2y^'istiger, C. V., South of New Guinea. Station 187. 



Trkjla leptacantlms, n. sp. (PI. XVIII. fig. B). 



D. 8/11, A. 12. Scales exceedingly small. The prseoi'bital and suprascapular 

 spines are slender and very long, as long or longer than the eye. Prseopercular, oper- 

 cular, and humeral spines short. Interorbital space concave, equal in width to the 

 diameter of the eye. Dorsal sjoines of moderate length and strength. The pectoral 

 reaches to the sixth or seventh anal ray. Lateral lines not spiny. Light reddish ; back 

 and base of the second dorsal with scattered irregular blue ocelli. A bluish streak 

 below the canthus rostralis. Posterior surface of the pectoral fin blue, with a white 

 margin all round, and a large black spot at the base. Ki Islands. Length of specimens, 

 4 to 41 inches. Station 192 ; 129 fathoms. 



Lepidotrigla spiloptera, n. sp. (PL XVIII. fig. C). 



D. 9/15, A. 15, L. lat. ca. 65. Scales very indistinctly serrated. Lateral line without 

 spines. Anterior profile of the snout concave. Prasorbital projecting in the form of a 

 short triangular lamina. Interorbital space very concave, in width nearly equal to the 

 vertical diameter of the eye. A deep transverse groove separates the interorbital space 

 from the crown of the head. The spines of the dorsal fin are of moderate strength, those 

 running along the base of the dorsal fins are well developed, lanceolate. Pectoral fin 

 extending to the fourth anal ray. Coloration uniform reddish. Pectoral dark blue on 

 its inner surface, with numerous white ocelli, and a white margin. In very young 

 specimens the groove behind the eyes is Ijut slightly indicated ; the white ocelli 

 on the pectoral fin are absent, and a l)]ackisli l»lotch occupies the membrane between 

 the fourth and sixth dorsal spines. Ki Island. Length of specimens, 3^ to 5^ inches. 

 Station 192 ; 129 fathoms. Arafura Sea. 



Dactylopterus orientalis, C. V., Arafura Sea. Station 188. 

 Peristethus moluccense, Blkr. Station 192, Ki Islands ; 129 fathoms. 

 Pegasus natans, L., Somerset, Cape York. 

 SiUago eiliata, C. V., Somerset, Cape York. 



