2. 8YNGNATHU8. 161 



postorbital pa^"*: of the head is more than that of two body-rings 

 (measured laterally). No postorbital ridge. Operculum with scarcely 

 a trace of a ridge. Nuchal plates with a more or less distinct 

 median ridge. Shields without spines. Lateral line and upper 

 cavdal edge not continuous. Tail nearly twice as long as the trunk 

 (without head). Dorsal fin commencing slightly in advance of or 

 above the vent. Caudal fin well developed. 

 California. 



a. Adult. California. Presented by Mr. F. Gruber. (D. 35. 



Rings 18+41.) 

 h. Adult. Vancouver Island. Collected by Lieut.-Col. Hawkins. 



(D. 39. Rings 18 + 41.) 

 c, d. Adult : dried. Esquimalt Harbour. Collected by the Boundary 



Commission. (D. 35.) 



7. Syugnatlms acicularis. 



Syngnathus acicularis, Jenyns, Voy. Beayle, Fish. p. 147, pi. 27. 



fig. 3. 

 arundinaceus, Girard, U. S.,Pac. R.R. Exped. Fish. p. 346; 



GiU, Proc. Ac. Nat. Sc. Philad. 1862, p. 283. 



Most closely allied to S. acus, schlegelii, and gnseo-lineatus. 

 D. 36. Osseous rings 18 + 42. 



Anterior part of the trunk deeper than the head. The length of 

 the snout equals the distance of the front margin of the orbit from 

 the root of the pectoral fin, which is half as long as the snout. No 

 postorbital ridge. Operculum with scarcely a trace of a ridge. 

 Nuchal plates with a slight median ridge. Shields without spines. 

 Lateral line and upper caudal edge not continuous. Tail twice as 

 long as the trunk. Dorsal fin commencing somewhat in advance of 

 the vent. Caudal fin weU developed. 



Western coasts of America. 



a. Adult female. Coquimbo Bay. Collected by Dr. Cunningham. 



8. Syngnathus fistulatus. 

 Peters, Monatsber. Ak. Wiss. Berl. 1868, p. 466. 

 D. 37. Osseous rings 20 + 41. 



Snout twice as long as the distance of the posterior end of the 

 opercle from the orbit, and but little higher than broad. Siipraor- 

 bital ridges continued on the crown atnd convergent. Opercle with a 

 keel on its anterior half, and radiating striae. The entire head 

 leathery, rough. Shields without spines. Lateral line passing into 

 the upper caudal edge. Dorsal Jin commencing on the anal ring, and 

 occupyitig seven caudal rings. Tail twice as long as the trunk (with- 

 out head). Pouch on twenty -one caudal rings. (Ptrs.) 



Puerti^ Cabello. 

 VOL. vin. 



