J 48 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



defined, especially between the gill- opening and the vent. Behind the 

 vent the bands are not so well marked, and a few small light spots are 

 in the intervals between them. The ground color of the fish is brown. 

 The longest light bands are about as long as the head. 



I have not seen M. fasciatus, and know it only from the descriptions 

 and figures. These seem to indicate a species with the maxilla only one- 

 third as long as the space between the tip of the snout and the begin- 

 ning of the dorsal, with the ventrals little developed and with the head 

 less than one- tenth of the total length. Jf. maxillaris has a much longer 

 maxilla, a wider mouth (measured over the tips of the maxillse with the 

 mouth closed), well developed and separate ventrals, and the head 

 nearly one-eighth of the total length. 



Liparis gibbus, n. s. 



This is a species resembling L.fahricii Kroyer and L. tunicata Ehdt. 

 in its dorsal and anal ray -formulae; but it shows imi)ortant differences 

 from both. 



From L. fahricii it may be at once distinguished by its smaller eye 

 (one-fourth as long as the head) and its depressed snout (the distance 

 from the angle of the mouth to the base of the anterior nostril being- 

 less than one-half the greatest depth of the head). It diflers from L. 

 tunicata in having (1) a larger eye, (2) a much smaller number of pec- 

 toral rays, (3) a much smaller number of unarticulated dorsal and anal 

 rays. 



In preparing the description, I have made use of the following 

 specimens : 



24010 (1203), Unalashka, W. H. Dall (1 specimen). 



24047, Saint Paul Island, 1872, H. W. Elliott (1 specimen). 



2G625 (1654), off" Cape Tchaplin, Siberia, 1880, Dall & Bean (1 speci- 

 men). 



27535 (1722), Plover Bay, Siberia, 1880, Dall & Bean (1 specimen). 



27545 (1638) Plover Bay, 1880, Dall & Bean (2 specimens). 



Of these number, 24047 is in the best state of preservation, the lax 

 integument being largely or partly separated from the body in most of 

 the other individuals. I have examined number 27535 most closely to 

 learn the structure of the fins, and find that it has 44 dorsal rays, of 

 which only the first 12 are not articulated ; the anal has 36 rays, only the 

 first one being unarticulated; the pectoral has 35 rays, and the caudal 

 12. The radial formulse of the other examples are as follows: 



24010, D. 38 -f; A. 29+. 



24047, D. 42; A. ca. 32. 



26625, D. 41 ; A. ca. 33. 



27545a, D. 42; A. 35. 



27545&, D. 42; A. ca. 34. 



The dorsal and anal are connate with the caudal, the free portion of 

 the caudal being only about one-third as long as the head. The great- 



