108(a). AGONIDJL — SIPHAGOXUS. 725 



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

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

 l)lates; dorsal ridges high anteriorly, the median line of back from 

 snout to dorsal flu concave. Head 5g; depth 9. D. 5; A. C; Lat. 1« 

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

 dant in deep water. 

 (Cottus monoptcrijfjius Bloch, Ansliiudische Fisclie, ii, ir>(>, taf. 178; Giinther, ii, 216.) 



aa. Nasal spiucs obsolete. {Anoplagonus G\\\.) 



1110. A. ieapi'iiiis Giinther. 



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; inteiorbital 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. JO; P. 10; Y. 2; Lat. 1. 41. Vancouver's 

 Island. {Giinther.) 



(Giinther, ii, 524: Anoplagonus inermis Gill, Proc. Acad. Nat. Sci. Pliila. 1861, 167.) 



382.— SIPHAGO]\US Steiudachner. 



(Steindachner, Ichtb. Beitriigc, v, 140, 1876: type Syngnathus scgaliensis Tiles.) 



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

 beyond upjier, with a long barbel at the sj'mi)hysis; gill-membranes 

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

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

 Agonus.) 



1111. S. barbatus 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 moderatelj^-compressed 

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

 on vomer; snout and orbital rim without spines; eye in middle of head; 

 suborbital narrow, unarmed; i)reopercle with 3 spines; large polygonal 

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

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

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

 and Japan; not rare. 



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



