114. BLENNIIDJS XIPHISTER. 
771 
1 1 76. A. atropjas'patroMS (Kittlitz) Gill. 
Color grayish olive, varying to brown, everywhere above finely 
marked with blackish reticulations; along each side of back a series of 
small, irregular, sharply-defined grayish spots; a series of small pale 
spots along lateral line; belly pale; crest and middle line of back 
rather pale; under parts of head yellowish; an oblique, wedge-shaped, 
pale streak extending downward and backward from the eye, bounded 
on each side by a sharp light-red line, and then by a dusky area; lower 
jaw mottled; dorsals olivaceous, speckled, a blackish spot on front; 
anal olive, tinged with red; pectorals dull orange, barred at base; cau- 
dal reddish, with narrow pale streaks, and a light bar at base; color 
sometimes nearly plain purplish, but more often grayish and mottled. 
Head with a fleshy crest, which rests on a ridge of bone; its height in 
older specimens about equal to eye; mouth rather large, the maxillary 
reaching beyond the orbit. Pectorals about half the length of head; 
dorsal and anal comparatively high, barely connected with the base of 
caudal; nape midway between origin of dorsal and pupil. Ilead G^; 
depth 6i^-. D. LVII; A. 41. Alaska to San Praucisco; abundant 
northward. 
{Oplddium atropnrpuremn Kittlitz, Denkwiird. eiuer Reise, Riiss.-Anier. i, 225, 18.58: 
Centronotus cristcKjalli Giiutlier, iii, 289: Anoplarchus purpurescens Gill, Proc. Acad. Nat. 
Sci. Phila. 1861, 261: Amplarcliiis cristagalU Giiuther, iii, 564.) 
1177. A. alectrolopSiMS (Pallas) J. & G. 
Brownish-olive, darker above; a series of green blotches along the 
dorsal; dorsal brownish-olive, with indistinct oblique bars; aual and 
caudal with wavy lines; head with a longitudinal fleshy crest, extend- 
ing from above eyes to nape. Anal flu beginning at anterior third of 
body; dorsal and anal uuiting with the caudal; iiectorals very small ; 
no ventrals. Lateral line obsolete. D. LXIII; A. 44; C. 13. Island 
of Talek, Gulf of Penshin. {Cuv. d; Val.) Perhaps identical with the 
preceding. 
(BJennius alectrolophtis Pallas, Zoogr. Ross.-Asiat. ill, 174: Gunnellus alectrolophus 
C. & V. xi, 447 : Centronotus alectroloplms Giiutlier, iii, 289.) 
414.— XIPSIISTEK .Jordan. 
{XipMdion Girard; preoccupied iu Orthoptera.) 
(Jordan, Proc. U. S. Nat. Mns. 1879, 241: type Xiphidion mucosum Girard.) 
Body elongate, eel-shaped, covered with small scales; lateral lines 
several, viz : one along the median line of the side, one above this, and 
one below it; one on each side of the abdomen, the two meeting in 
