1911.] NATURAL SCIENCES OF PHILADELPHIA. 217 



most anterior slightly bent back and greater extent posteriorly slightly 

 bend forward, though still more anteriorly and posteriorly graduated 

 down a little smaller, not continuous over front of upper jaw, and 

 extending to distal end of bone. Similar more erect mandibular 

 teeth, not connected across symphysis, more minute. A small asperous 

 process each side of vomer, asperities very minute. Similar palatine 

 and pterygoid asperities. Tongue smooth small knob, attached in 

 front of mandible, from behind its upper surface and length of basi- 

 branchial shaft above minutely asperous in narrow area. Mandible 

 convex over surface, constricted to point at symphysis, rami not 

 elevated inside mouth or only gradually sloping to articulation behind. 

 Mandible tip extends forward about midway in postnasal. Nostrils 

 small, together, about last * in snout. Interorbital broadly convex. 

 Each supraorbital ridge distinct, flaring out a little over each eye 

 anteriorly. Cheek would form an isosceles triangle, its base being 

 nearly half its height. Cheek and opercle smooth. 



Fig 4. — Anchovia pkttyargyrea Fowler. Type. 



Gill-opening forward till about opposite middle of eye. Rakers 

 about 15 + 20, slender, pointed, compressed, inner edges minutely 

 denticulated, 1^ in eye. Filaments 1^ in eye. Pseudobranchiae 

 2 in eye. Isthmus long, slender, compressed, lower edge convex. 

 Branchiostegals 12, membranes united anteriorly only very short 

 distance, forming narrow free fold over isthmus. 



Scales caducous, mostly fallen, narrowly imbricated, disposed in 

 even longitudinal series, each with about 5 vertical striae, and all of 

 more or less uniform size. Dorsal and anal depressible within basal 

 scaly sheaths somewhat. Caudal base scaly, inner edges of lobes each 

 with an area of small crowded elongated or horizontal scales, and lobes 

 basally with fine scales. Long pointed distally free axillary pectoral 

 scaly flap f length of fin. Similar axillary ventral scaly flap but little- 

 less than fin. 



