1. I'OLYNEMIS. '^21 



b. T\VL'iiiy-.sc\e)i iuclica long : .stuti'cd. 



c, d. Jiulf-g-rown : bud stato. 



t'. Adult. India, rrcsciited by G. 11. Watcrhouso, Esq. 



/', <j. Half-grown : dried : bad .slate. Bay of Bengal. Presented by 

 tbe Zoological Society. 



Ii. A(hdt: stalled. Calcutta. J*urchased of iMr. Bartlett. 



i. Adult : stuffed. Sea of Binang. 



h, I. Half-grown : sldns. Sea of Binang. From Dr. Cantor's Col - 

 lection. 



m. Half-grown: very bad state. Sydney. Brom the Haslar Col- 

 lection. , 



Air-bladder with many appendages. Casca pylorica in great num- 

 ber (efr. Cant. Catah p. 80). 



17. Polynemus lineatus. 



D. 8 1 1. A. j^. L. lat. 65. L. transv. 8/13. 



Five pectoral appendages, one of which reaches beyond the tip ol 

 the ventral ; lobes of the caudal not iji'oduced into iilanumts ; the 

 distance between the root of the venti-al and anal tins mueh loss than 

 the length of the head. No distinct spine above the angle of the 

 jji'iuoperculum. Back with eight distinct bi'own longitudinal lines, 

 .'Uid about as many below the lateral line. 



Seas of Amboyna and Guatalcaua. 



a. Fine specimen. Amboyna. Burcliascd of Mr. Frank as Polij- 



iwriias kara. 



b. Fine specimen. Cuatalcami. From the iMuseum of Keonomio 



Geology. 



Descriptioii. — This species is moderately elongate, its greatest 

 height, below the origin of the soft dorsal, being 41 in the total 

 length. The tail is compressed and ratlier elevated, its height, 

 below the end of the dorsal, being one-seventh of the total length. 

 The length of the head is 4q in the total ; its Avidth between the 

 eyes is 3.! in its length. The snout is rather slioit and obtuse, half 

 as long as the diameter of the eye, which is nearly one-fourth of the 

 length of the head. The cleft of the mouth is wide, the uppei* 

 maxillary I'caching to the middle of the distance between the orbit 

 and the posterior margin of the |)]'a'Operculum, and its length being 

 2t in the length of the head. The posterior nuvrgin of the pra;02)er- 

 culum descends obliquely bacla\ards in a slight curve ; it is serrated, 

 the denticulations becoming coarser inferiorly ; the angle forms a 

 mombrami((.'ous lobe, rounded and produced. 



The oj'igin of the first dorsal is in the vertical from the eighth 

 scale of the lateral line, or from the middle of the interspace between 

 the root of the pectoral and ventral tins. The first spine is minute ; 

 the second is the strongest, all the others being flexible; the third 

 is the longest, and 1 ^j in the length of the head ; the fourth is hmger 

 than (ho second, and the follow iug rapidly decrease in h'tigth. A 



