1906.] NATURAL SCIENCES OF PHILADELPHIA. 93 



SYNQNATHIDiE.s 



36. Syngnathus mackayi (Swain and Meek). Pipe Fish. Fig. 8. 



Color in alcohol brownish marked with small whitish clots or spots, 

 each ring with a pale or whitish blotch on each keel, usually small and 

 on side at intervals of four rings extending down in form of narrow 

 bars. Back grayish with pale brown vermiculations medianly. On 



Fig. 8. Syngnathus mackayi (^wain and Meek). 



lower suface of tail small white spots producing a more or less con- 

 fluent appearance. Head brownish, mottled grayish above, and snout 

 and under surface with more or less whitish spots. Dorsal pale brown- 

 ish-white mottled with pale brown. Caudal similar, only blotched and 

 darker. Pectoral pale transparent brownish-white. Iris pale slatv. 



Color in life resembling the following species. Back whitish, finely 

 vermiculated or specked with lavender, brownish and olivaceous. 

 Lower surface a Httle more green than sides which are marked with 

 bluish-green. Snout slightly brownish. Iris pearl-colored with 

 brownish. Length 6^ inches. 



JMarquesas and Big Pine Ke}-. This species is subject to color 

 variation, some examples inclining more to green and others to brown 

 than the one noted above. 



37. Syngnathus elucens Poey. Pipe Fish. Fig. 9. 



Color in alcohol brownish, each ring with a blotch of whitish pos- 

 teriorly on each keel, those on sides of about every fifth ring producing 

 about a dozen vertical lateral bands. Whitish blotches on lower sur- 

 face of caudal becoming more or less confluent posteriorly. Head 

 brownish, snout with a few w^hite spots and under surface with a 

 number of w^hitish blotches. Dorsal, caudal and pectoral whitish, 

 former fins with brownish specks. Iris dull slaty. 



Color in life with back whitish finely specked or dotted with lavender, 

 brownish and olive medianly. Lower surface more clearly green than 



^ I follow Profs. Jordan and Snyder in retaining Syngnathus for the species 

 formerlj' called Siphostoma. Of the four species available by elimination, viz., 

 typhle, acus, pelagicus and ophidion, the second {acus) remains and therefore 

 must be regarded as the type. It is congeneric with Siphostoma Rafinesque. 

 For typle Rafinesque also prop^osed Typle, and for ophidion, Nerophis. The 

 latter name must therefore i-e used for the Ocean Pipe Fishes. 



