236 



PROCEEDINOS OF THE NATIONAL MUSEUM. 



VOL. XXVII. 



1. STLENGIS Jordan and Starks. 

 Stlengis Jordan aiui Starks, new genus (o.s-e»sis). 



Body not compressed. Jaws, vomer, and palatines with villiform 

 teeth. E3^es large, narrowly separated. No slit behind last gill. Gill 

 memljranes broadly united, free from the isthmus. Branchiostegals 

 6. Preoperele with a long slender spine armed al)ove with several 

 antler-like processes, 8 small sharp spines l)elow. Body encased in 3 

 longitudinal series of bony plates, which are sharply toothed behind; 

 in addition each plate of the upper and lower series is armed with a 

 sharp keel ending in a sharp hooked spine much as in Agonidse. Belly 

 naked. Ventrals with two soft ra3's. 



{()T\eyyi5, a comb.) 



I. STLENGIS OSENSIS Jordan and Starks, new species. 



Head 'lim length without caudal; depth ,5; dorsal ¥11-14; anal 13; 

 eye 3 in head; interorbital width 10; snout 4; maxillar}^ 2i; preopercle 



Fig. 1.— STLENGIS osensis. 



spine 4; pectoral If; ventral If; caudal 2^; height of caudal peduncle 



Upper profile of head broadlv rounded; the snout not steep. Body 

 elongate, not compressed; tapering to a slender caudal peduncle; mouth 

 rather large; the maxillary reaching to slightly past middle of eye. 

 Lower jaw slightly included. Small villiform teeth on jaws, vomer, 

 and palatines. Eyes large and very narrowly separated; at upper pro- 

 file of head. Nasal spines sharp. Angle of preopercle with a long' 

 slender spine which reaches to edge of opercle, its upper edge armed 

 with .5 antler-like processes. Lower edge of preopercle with 3 small 

 sharp spines; the lowest one pointing forward. No tentacles on top 

 of head. 



Body encased in 3 longitudinal series of bon}- plates, which are 

 sharpl}^ toothed behind; each plate of the upper and lower series has 

 an enlarged spine directed backward. The lowest series contains 24 

 plates and extends from just in front of the anal to the base of the 



