1918.] NATURAL SCIENCES OF PHILADELPHIA. 65 



ensheaths upper maxillary edge, its width 2| in eye. Hind pre- 

 opercle edge obliquely forward opposite hind pupil edge, little 

 emarginate below, and entire. 



Gill-opening forward opposite front eye edge. Rakers 9+20, 

 lanceolate, very slender, slightly less than filaments or latter about 

 2 in eye. Pseudobranchise about as long as gill-filaments. Isthmus 

 narrowly constricted, especially anteriorly, with rather narrow 

 branchiostegal membrane across. 



Scales finely ctenoid, narrowly imbricated in even lengthwise 

 rows somewhat converging behind, and smaller along body edges. 

 Fins all scaly basally. Suprascapula small, entire. Head scaly, 

 except lips, and on snout and mandible scales quite small. Cheek 

 with 4 rows of scales, and a single row of broad ones on preorbital. 

 Scales on opercle moderate. Humeral scale large as eye. Small 

 scales on breast and pointed scaly flap between ventral bases 3 in fin, 

 and pointed axillary scaly flap about same. Upper branch of lateral 

 line curves up at first, then concurrent with upper limit of general 

 squamation on dorsal fins, and ending below soft dorsal origin. 

 Tubes simple, large, and extend well over each scale or for about 

 first f its exposure. Pores in horizontal section mostly simple and 

 single, though some few double, all median on each scale exposure, 

 and not on caudal base. 



Spinous dorsal inserted about opposite hind basal pectoral edge, 

 spines slightly graduated to third, others more or less subequal, 

 and fin edge notched. Soft dorsal inserted about last third in space 

 between liind preopercle edge and caudal base, graduated to fourth 

 and fifth rays, which form point behind extending slightly beyond 

 caudal base. Spinous anal inserted nearer pectoral origin than 

 caudal base, first spine nearly f length of second. Soft anal little 

 more oblong than soft dorsal, little shorter behind. Caudal deeply 

 forked, subequal lobes sharply pointed, 2| in combined head and 

 trunk. Pectoral reaches second anal spine base. Ventral inserted 

 below last half of pectoral base, reaches nearly to anal, and spine 

 about Y o^ fill- Vent about midway between depressed ventral 

 spine tip and anal origin. 



Color in alcohol dark brown above generally, and lower surface 

 paler. Traces of obscure mottling or spots on head above and back 

 especially anteriorly. Under surface of head, with lips pale. Iris 

 slaty. Dorsals blackish-brown, also anals. Caudal with lengthwise 

 blackish-brown band broadly on upper lobe above and lower lobe 



