88 Annals of the Carnegie Museum. 



covered by the skin. The largest is in length equal to the diameter of 

 the eye, strongly recurved dorsally and posteriorly, and situated on the 

 posterior and outward angle of the preoperculum. At the anterior base 

 of this is a much smaller sharp spine pointing outward. The others are 

 on the inter- and sub-opercular bones respectively, and so situated near 

 the junction that they point toward each other. They are moderate in 

 size, sharp and curved. The first dorsal is low, one-half the height of 

 the second and the anal, which are equal and twice the height of the caudal 

 peduncle. The pectorals are large, extending to beyond the second dorsal, 

 while the ventrals extend to the vent, which is midway between the 

 snout and base of the caudal. The latter is narrow and rounded, the rays 

 branched. The lateral line is well developed and extends tothe base of the 

 caudal, with about 35 large pores. 



We have not seen Kessler's original description of this species. 



Our specimen agrees with the scanty account of Cottus sihiricus given 

 by Warpachowski. Warpachowski makes no reference to the form of the 

 preopercular spine, but in his figure the species is essentially as in our 

 specimen. He ascribes to the species D. VIII, 17; A. 12, VI, 4; P. 14. 

 Head about 3 in length; depth about 5, upper parts with minute rough 

 prickles; ventrals reaching vent. 



Dybowski's account of Cottus haitej from the Amur is more complete, 

 but the preopercular spine is merely noted as turned upwards, "sursum." 

 In the short anal these nominal species agree with each other and with 

 our specimen. 



