1913.] 



NATURAL SCIENCES OF PHILADELPHIA. 



565 



protrude beyond snout tip. Nostrils together, large, anterior 

 simple pore, posterior larger, crescentic. Interorbital broadly 

 convex. Infraorbital broad, covers cheek. Hind preopercle edge 

 nearly vertical. Opercle smooth, deep, hind edge rounded. Fon- 

 tanel broad, extends from frontals to occipital process. 



Gill-opening extends forward about opposite front pupil edge. 

 Rakers a few minute points. Filaments about | of eye. Isthmus 

 moderately constricted, its surface convex. Branchiostegals mod- 

 crate, subequal. 



Scales large, well exposed in lengthwi«!e series, cj'cloid, and of 

 mostly uniform size, along base of anal extending out without 



Fig. 20. — Tijltocharaz madeirw Fowler. (Type.) 



<liminution in size or augmented numbers to form basal sheath for 

 fin. Caudal base scaly. L. 1. not developed. 



Dorsal origin about midway between hind edge of eye and caudal 

 base, first branched ray longest and depressed fin extends back 1| 

 to caudal base. Adipose fin small, inserted about last f in space 

 between dorsal origin and caudal base. Caudal moderate, well 

 forked, pointed and rather broad lobes subequal. Anal inserted 

 well before dorsal or nearly midway between mandible tip and 

 caudal base, first branched ray longest, and with anterior rays 

 longer than others, though not forming elevated lobe, lower edge of 

 fin being nearly straight. Pectoral low, pointed, upper rays longest, 

 extends back about first third in length of depressed ventral. Origin 

 of ventral nearer anal origin than that of pectoral, and depressed fin 

 extending back to vent, which close before anal. 



