1905.] NATURAL SCIENCES OF PHILADELPHIA. 513 



dusky brownish variegated with darker or blackish-brown spots, giving 

 them a somewhat barred appearance. Eyes slaty. 



Length 26 inches. 



Type No. 2,387, W. I. A. P. Baram, Borneo. 1897. Mr. Alfred 

 C. Harrison, Jr., and Dr. H. M. Hiller. Also paratype No. 2,763, W. 

 I. A. P. Same data. It is smaller. 



(I take pleasure in dedicating this interesting species to Dr. David 

 Starr Jordan, of the Leland Stanford Junior University, my most able 

 preceptor in Ichthyology.) 



82. Butis butis (Hamilton). 



Head 2|; depth 4f ; D. VI-i, 8; A. i, 8; scales 29 in lateral series to 

 base of caudal, and 2 more on latter; 13 scales ol^liquely between origin 

 of spinous dorsal and that of anal. Each scale of body with a smaller 

 one, or more, usually at its base. This agrees fairly well with Day's 

 figure of Eleotris butis,''* though there are four or five brownish lines 

 radiating from the eye. Sides of head marked sparsely with brownish 

 specks. Four examples. 



PERIOPHTHALMIN^." 



83. Periophthalmodon schlosseri (Pallas). 



Head 31^; depth 41; D. VH-i, 12; A. i, 12; scales 51 in a lateral 

 series to base of caudal, and 4 or 5 more on latter; about 14 scales in a 

 transverse oblique series from origin of soft dorsal to anal; width of 

 head 1 1 in its length; depth of head 1^; snout 3; eye6i; maxinary2f; 

 width of mouth 2|; least depth of caudal peduncle 2f ; width of base 

 of pectoral 3; length of pectoral 1^; ventral 2; caudal 1|-; second dor- 

 sal spine If; sixth dorsal ray 2f ; tenth anal ray 3f. Lower surface 

 of head and breast naked. In alcohol brownish, under surface of body 

 paler or whitish, and ventrals and anal similar. Spinous dorsal blackish- 

 brown with upper margin conspicuously white. Soft dorsal brownish 

 with a broad median dusky or blackish-brown band. A dusky band 

 from eye to shoulder. Iris slaty and outer lid white. Length 8^ 

 inches. Four examples. 



84. Periophtlialmus argentilineatus Valenciennes. 



Head 4; depth 5^; D.XIII-13; A. 11; P.i, 14; V. 1,5; scales kbout 

 80? in a lateral series from above gill-opening posteriorly to base of 



■'^Fishes of India, II, 1876, PI. 67, fig. 3. 



''^ Boleophthalmus Valenciennes may be distinguished from Scartelaos Swainson 

 by the filamentous dorsal spines. As I have only examined examples of Boleoph- 

 thalmus chinensis (Osbeck), B. hoddcerti Schlegel, the type of Bvleophthabnus 

 Valenciennes, may be different. Also I have only seen Scartelaos aucupatorius 

 (Richardson) from China, which may be different from »S. viridis (Swainson), the 

 type of the latter's genus. 



