28 PROCEEDINGS OF THE NATIONAL MUSEUM vol.84 



downward, third spine downward, lower spine downward and for- 

 ward. No other spines on head. Pores of head moderate in size, 

 anterior pores of mandibuhxr series paired, no single pore on median 

 line of symphysis. Gill membranes broadly united, free from isth- 

 mus. Branchiostegals 6. Moderately broad bands of cardiform teeth 

 on premaxillaries, dentaries, and vomer, narrow band on palatines. 

 Gills 31/2, gill rakers in the form of short tubercles. Pelvic fins of 1 

 spine and 3 rays, middle ray the longest, inner ray the shortest. Scales 

 of lateral line in the form of short tubes bearing strongly ctenoid 

 ridges dorsally and with a few moderately developed spines along 

 the outer posterior margin. General body scales in tlie form of sub- 

 oval plates, somewhat cupped from beneath and bearing transverse, 

 ctenoid ridges posteriorly. 



KEY TO THE KNOWN SPECIES OP RICXTZENFUS 



o.* Maxillary scaly; scales ou spines and rays of dorsal fins; 



interorbital space transversely concave pinetorum 



a.' Maxillary naked ; no scales on dorsal fins ; interorbital space flat. 



nuditliorax 



Subgenus RICUZENIUS Jordan and Starks 



Mandibular branch of lateral line system composed of clusters of 

 small pores arranged in roughly oval patterns, the anterior pair of 

 pores simple, enlarged. No slit behind last gill arch. Head and 

 body almost completely covered with uniform scales, only lips, chin, 

 gill membranes, and axilla naked. 



RICUZENIUS PINETORUM Jordan and Starks 



Ricuzenius pinetorum Jordan and Starks, Proc. U. S. Nat. Mus., vol. 27, p. 243, 

 fig. 5, 1904; Bull. U. S. Fish Comm., vol. 22, p. 591, fig., 1902 (1904).— Job- 

 dan, Tanaka, and SNYDEai, Journ. Ck)ll. Sci. Imp. Univ. Tokyo, vol. 33, p. 

 257, fig. 193, 1913. 

 Diagnosis.— Body deep, the distance from origin of first dorsal to 

 pelvic base 4.0 (3.8-4.3) in standard length. Head large, 2.6 (2.4- 

 2.7) in standard length. Mouth terminal, lower jaw equal to or 

 slightly longer than upper. Interorbital space wide, 2.1 (1.8-2.3) in 

 orbit, definitely grooved; top of head slightly concave. D. IX, 15 

 (14^16) ; A. 12 (11-13) ; P. 16 (16-17). Lateral line armed with 37 

 (35-38) scales. 



In the type description of thig species Jordan and Starks made the 

 unfortunate error of stating that the ventral fins had "a concealed 

 spine and 2 soft rays each", the error being introduced into the key 

 also. The true count, which Dr. G. S. Myers has been kind enough 

 to verify on the type specimen, is I, 3. 



