586 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxvn. 



anterior edge of pupil. Nasal spines well developed, but not very 

 sharp. A spine developed at the center of the bony buckler on cheek. 

 A very strong- ridged spine at angle of preopercle, and three smaller 

 ones below on edge of preopercle; the lowest represented by a very 

 small, blunt tubercle. Superorbital rim produced in a rough ridge. A 

 low, rough ridge curves back from superorbital rim to over parietal 

 region. Top of head concave. A thin, flat tentacle at end of max- 

 illary. 



First dorsal spine between the seventh and eighth plates on back. 

 The spinous dorsal covers eleven plates, and the mem))rane of the last 

 spine covers a little over three plates. There are four plates between 

 the dorsals counting between the bases of the rays. The length of 

 the third dorsal spine is equal to the length of the snout and the eye 

 combined. The soft dorsal covers seven plates to the base of the last 

 ray. The longest rays are scarcely equal in length to the longest 

 spines. The anal covers fifteen plates. The tip of the last anal ray 

 reaches past that of the last dorsal ra}" a space covering nearly two 

 plates. The lonoes!: anal rays equal the length of the snout and half 

 the eye. One of our specimens has two ventral ra3^s, as in O. dode- 

 caedron. The other has a third inner raj'^ developed half as long as 

 the other rays. The length of the ventrals is 2| in head. The pec- 

 toral is very broadly rounded behind; there is only a little diflerence 

 between the upper ten ra3^s in length (^scarcel}" half the diameter of 

 the eye); below the rays rapidly decrease in length. The pectoral 

 barely fails to reach to opposite the first anal ray. Caudal rounded; 

 its length If in head. 



Color. — Dull brown on back, fading just below lateral line into the 

 white of under parts; no irregular dark stripe along side, as in O. dode- 

 caedron, or no sharp black points on pectorals; lower lip dark brown, 

 under part of head otherwise white; maxillar}^ tentacle milk white; 

 pectoral with three or four irregular, wide, brown, blended crossbars; 

 spinous dorsal with slight, inconspicuous brown spots on the spines 

 indicating oblique cross lines; soft dorsal with two brown oblique bars, 

 the second one very wide and bordering the fin posteriori}' ; anal white; 

 its posterior third or fourth dusky; ventrals white; caudal dark brown. 



This species differs from Oeca dodecaedron in having the spines bet- 

 ter developed on the rjdges of the body, in having a greater number 

 of dorsal spines, in having spines developed on nasals and cheeks, in 

 having the plateless regions under pectoral and on breast rougher and 

 in color. (Compared with specimens of O. dodecaedron collected by 

 the U. S. Fish Commission steamer Albatross at station 3239, Alaska.) 



The type from Tomakomaki in Iburi, Hokkaido, is 20 cm. in length 

 and is numbered Y730 Ichthyological Collections, Leland Stanford 

 Junior University Museum. A cotype very similar, from the same 

 locality, is loaned by the Sapporo Museum. 



