108 (a). AGONID^E SIPHAGONUS. 725 



poral region; lower jaw slightly included; caudal peduncle very long 

 and slender, forming about two-fifths the length; breast with flat 

 plates; dorsal ridges high anteriorly, the median line of back from 

 snout to dorsal fin concave. Head 5; depth 9. D. 5; A. 6; Lat. 1. 

 about 50. L. G inches. Polar regions, southward to Cape Cod; abun- 

 dant in deep water. 



(Coitus monoptcrygius Bloch, Ausliiudische Fisclie, ii, 150, taf. 178; Gunther, ii, 210.) 

 act. Nasal spines obsolete. ( Anoplayonus Gill.) 



1110. A. icaei'mis Giintber. 



Black, obscurely marbled with grayish and brownish; dorsal grayish, 

 marbled with black; caudal black, with a gray band; anal yellowish, 

 with a black dot behind each ray. Body anteriorly much broader than 

 high. Head flat, depressed, triangular; nasal spines obsolete; lower 

 jaw projecting; interorbital space grooved, narrower than the orbit; 

 eye less than snout, 5 in head; pectorals shorter than head; ventrals 

 small; breast with about 16 plates. Head 5 in total length; depth 14; 

 width 9. D. 5; A. 5; C. 10; P. 10; V. 2; Lat. 1. 41. Vancouver's 

 Island. (Giinther.) 



(Gunther, ii, 524: Anoplagonm inermis Gill, Proc. Acad. Nat. Sci. Phila. 1861, 167.) 



32. SIPHAGONUS Steindachner. 

 (Steindachner, Ichth. Beitriige, v, 140, 1876: type Syngnath us scgaliensis Tiles.) 



Form of Syngnathus; snout produced in a tube; lower jaw projecting 

 beyond upper, with a long barbel at the syrnphysis; gill-membranes 

 free from the isthmus; both dorsals present; ventrals very short j 

 plates of body slightly keeled, without spine. (Latin, sipho, tube; 

 Agonus.) 



1111. S. barb at us Steind. 



Brownish, a lengthwise black band on sides of head, becoming ob- 

 solete behind. Body very slender, subterete; median line of head and 

 back concave; snout produced into a long moderately-compressed 

 tube, the single barbel at the chin about twice the length of eye; teeth 

 on vomer; snout and orbital rim without spin'es; eye in middle of head; 

 suborbital narrow, unarmed; preopercle with 3 spines; large polygonal 

 scales on the breast; pectorals long, reaching dorsal; veutrals very 

 short, the vent close behind them. Head 4; depth = length of snout, 

 9. D. VI-7; A. 9; P. 12; Lat, 1. 44. L. inches. Coasts of Alaska 

 and Japan ; not rare. 



(Steindachuer, Ichth. Beitriige, v, 140, 1876.) 



