ZooL— Vol. III.] GILBERT— PACIFIC COAST FISHES. 



26*] 



produced maxillary, and with fleshy appendages on the 

 inner border of the shoulder girdle. Clevelandia and Ever- 

 mannia have been described as lacking these appendages; 

 but in Evermannia there is invariably a single conspicuous 

 slender fleshy slip, precisely similar to the one present in 

 Ilypnus; while in Clevelandia there is a low but sharp cuta- 

 neous fold or keel, which exhibits enlargements at two or 

 three points along its course, there forming low papillae. 

 While this structure is low and inconspicuous, it does not 

 differ essentially from that found in Eefidogobius. The 

 characters relied upon to distinguish Clevelandia, IlypnuSy 

 and Evermannia are not of high value, but the genera admit 

 of definition and contain what are unquestionably natural 

 assemblages of species. 



Table of Measurements in Hundredths of Length without Caudal. 



Total length in mm 



Length to base of caudal in mm 



Length of head 



Length of maxillary , 



Length of snout 



Diameter of eye 



Interorbital width (bone) 



Depth of body 



Depth of caudal peduncle 



Base of spinous dorsal , 



Distance between dorsals 



Base of second dorsal 



Base of anal 



Length of pectoral , 



Length of ventrals 



Length of caudal 



35>^ 



29 



26 



hH 



8 



5 



2 



16 



7 



9 



8% 

 32 

 27 

 17 

 18 

 22 



6. Rathbunella alleni new species. 

 Plate XXVIIL 



Differing from 7?. hypoflecta, the only previously known 

 member of the genus, in its much deeper form, the ctenoid 

 scales, the fewer unbranched dorsal rays, the presence of 

 a naked strip before dorsal fin, and in the coloration. 



Type: 166 mm. long; Monterey Bay, California; col- 

 lector W. F. Allen. 



