444 PROCEEDINGS OF THE ACADEMY OF [Part III 



Syngnathus louisianae (Gunther) 



Marquesas and Big Pine Keys, Hailer's Rock, West Palm Beach 

 and Pensacola, Florida. Rings 20 to 23+35 or 36; D. 33 or 34, on 

 3 or 4+4 to 6 rings. Largest 283? mm. 



Syngnathus acus Linne. 



Italy and Sweden. Rings 15 to 20+33 to 43; D. 33 to 39, on 1 to 

 3+6 to 9 rings. Largest 333 mm. In most upper lateral caudal 

 keel continuous with median lateral keel of trunk. 



Syngnathus pellegrini Fowler. 



Proc. U. S. Nat. Mus., 56, 1919, p. 265, fig. 11. Gabun, West 

 Africa. 



Nos. 975 to 978, A. N. S. P., type and paratypes. 



Typhlinus typhle (Linne) 



Italy and Gulf of Spisia. 



Stigmatophora argus (Richardson) 



One from "Fiji" wrongly identified by me as S. nigra Kaup. 

 Rings 19 +48? ; D. 42, on 8 +6 rings. Likely this specimen is actually 

 from Australia. 



Leptonotus tristriatus n. sp. Fig. 1. 



Head 2| to vent; depth 11; D. 42, on 3+8 rings, P. 12; rings 

 21+40? (tail damaged); snout about 1^ in head; eye 2f in post- 

 orbital region. 



Body elongated, slender, well compressed, and apparently deepest 

 midway in trunk, and combined head and trunk at least less than 

 tail. Upper keels on each side of back extend back to seventh 

 caudal ring. This replaced by similar parallel keel, beginning on 

 last trunk ring and entirely continuous posteriorly. Median 

 lateral keel from pectoral axis, and ends on last keel of trunk. 

 Median belly keel complete from breast to vent. Lower keel along 

 each side of body complete. 



Head slender, attenuate, compressed, upper profile nearly straight. 

 Snout greatly longer than rest of head. Eye rounded, small, though 

 now little left but orbital rim, which at least f of head depth at 

 that point. Mouth small, terminal. Interorbital flat. Opercle 

 without horizontal keel and fine striae radiating above and below. 



Gill-opening? 



Rings firm, and keels without spines. Each ring with numerous 

 fine striae, vertical on plates. 



