1 (ii; SYNGNATHIDiE. 



9. Syngnathus alternans. 



D. 39. Osseous rings 20 + 41. 



Snout twice as long as the postorbital part of the head, with a low 

 median ridge above, which simply passes into the suture between the 

 frontal bones. The two nuchal xilates with a low median ridge. 

 Supraorbital edge faintly continued on the side of the crown. O^ier- 

 cnlum with scarcely a trace of a keel near its base, and with fine 

 radiating stria). Shields mthout spines. Lateral line passing into 

 the upper caudal edge. Dorsal Jin standing on two hodg- and nine 

 caudal rings. Tail twice as long as the trunk ; pouch on twenty- 

 three caudal rings. Pectoral and caudal fins well developed. Body 

 and tail with fourteen brown cross bands, which are as broad as, or 

 broader than, the interspaces. 



Seychelles. 

 a. Male, 7| inches long. From the Haslar Collection. 



10. Syngnathus semifasciatus. 



Leptonotus semistriatus *, Kaup, Lophobr. p. 48. 

 D. 38. Osseous rings 214-49. 



Lateral line interrupted. Adult females have the trunk strongly 

 compressed and rather elevated, its depth being one-fifth of its 

 length. The length of the snout is equal to the distance of the 

 anterior margin of the eye from the middle of the second body-ring. 

 Head ^vith fine striae, but without ridges. Shields smooth. The 

 length of the body is contained once and onc-thii'd in that of the tail. 

 Vent below the end of the anterior third of the dorsal fin. Caudal 

 fin well developed. Upper part of the trunk -with numerous veiy 

 small, light, dark-edged ocelli, the lower part with a narrow brown 

 vertical bar on each ring. A white stripe, edged with black above 

 and below, runs from the lower part of the snout, through the eye, 

 over the gill- cover. 



South AustraUa and Tasmania. 



a. Type of the species, female, 9i inches long. South Australia. 



(Dr. Kaup states that "its origin is not noted," but it is distinctly 



written on tlie label.) 

 h. Female, 8 inches long. Tasmania. Presented by Dr. Milligan. 

 c. Female, 8 inches long. Australia. Presented by Dr. A. Giinther. 



11. Syngnathus blainviUianus. 



Syugnatlius blainviUianus, Eydunx S,- Gcrvais, in Guir. Mag. Zool. 



1':>-j7, vii. pi. 17 ; or Vog. Favorite, Zool. p. 79, pi. 32. 

 Leptonotus blaiuvillei, Kaup, Lophobr. p. 46. 



D. 35-37. Osseous rings 20-21 + 50. 

 The lateral line passes uninterz'upted into the upper edge of the 

 tail. !Males and young females have the trunk of nearly the same 



* The bands arc transverse (JaBcia), and not longitudinal {stria). 



