506 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxvi. 



Type.— C^Ai. No. 62953, U.S.N.M., a specimen 33 mm. long, from 

 the tide pools at Misaki. Cotype, Cat. Xo. 21137, Stanford Univer- 

 sity collection. Only 2 specimens seen. 



This species exhibits mnch the same type of coloration as Z. semi- 

 doliatus (Cuvier and Valenciennes), and might be mistaken for that 

 form. It diifers in being more slender, in having a naked area below 

 the spinous dorsal, and in color. 



It may be remarked, in passing, that Gohius semidollatus Day^ 

 represents a species that has apparently been wrongly identified. 



Genus EXPEDIO, new genus. 



Body elongate and slender, head broad, the muscles of the jaws 

 greatly developed. Tongue notched. Teeth simple; a band on upper 

 jaw, outside of which is a row of enlarged ones; a single row on the 

 lower jaw. Gill-opening restricted to side of head. A small anal 

 papilla. Body scaleless. Spinous dorsal and ventral fins absent. 

 Soft dorsal inserted above the anal. Middle of back with two parallel 

 rows of minute plica>. 



The genus resembles Luciogohias.i and is perhaps closely related 

 to it. It diifers in having no ventrals. 



Type^-^Exfedio parvulus^ new species. 



EXPEDIO PARVULUS, new species. 



Head, 5.9 in length to base of caudal; depth, 11; depth caudal 

 peduncle, 11; eye, 8 in head; snout, 3.5; D. 10; A. 11. 



Body of about the same depth throughout, the width less than the 

 depth ; head broader and deeper than the body ; muscles of sides and 

 top of head greatly developed, the interorbital and occipital regions 

 with a marked concavity; rim of eye extending above contour of 

 head. Mouth large, the cleft extending to a ijoint below posterior 

 border of eye; lower jaw projecting beyond the upper; lips large and 

 pendent; tongue broad, very deeply notched at tip; teeth simple, 

 a narrow band on upper jaw, a single series on the lower, outer row 

 on upper jaw enlarged. Gill-opening about equal in width to base 

 of pectoral. Nostrils with well-developed rims. A row of mucous 

 pores extending along snout and backward below eye; a short row 

 behind and above eye. A small anal papilla present. 



Head and bodj^ scaleless. 



Spinous dorsal and ventral fins absent. Soft dorsal inserted on 

 posterior third of body, measured from gill-opening to base of 

 caudal; the rays about equal in height to length of snout. Anal 

 inserted slightly in advance of dorsal, the rays somewhat longer than 

 those of dor.sal; caudal rounded; about three-fifths as long as head. 

 Pectorals with 13 rays ,•• the length contained about 2 times in head. 



a Fishes, India, p. 295, pi. lix, fig. 6. 



