460 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. 50. 



Table of measurements * and counts of Ethmidium notacanthoides and coerulea. 



1 Given in hundredths of body length to base of caudal. 

 3. ETHMIDIUM COERULEA (Cuvier and Valenciennes). 



Alausa coerulea Cuvier and Valenciennes, vol. 20, p. 432. Valparaiso, Chile 

 (not Mch'tia coerulea Girard, nor Clupea coerulea Mitchel). 



Clupea notacanthus Gunther, Cat. Fish. Brit. Miis., vol. 7, p. 443. Valparaiso, 

 Chile. 



Numerous specimens from Lota, Chile, the longest 15 cm. in total 

 length. They are evidently Alausa coerulea of Cuvier and Valen- 

 ciemies and correspond in all details with Giinther's Olwpea nota- 

 canthus. It has not been recognized as this species by any recent 

 authors. 



Depth 2f in length of body to base of caudal; head length 3f ; 

 latter exceeded by body depth slightly more thtin an eye diameter, 

 which is contained 4| in head, and is but slightly longer than snout; 

 maxillary ending slightly behind posterior edge of eye, and contained 

 twice in head; no teeth in jaws, on vomer, palatine, or tongue, save 

 slight serrations on edge of maxillary; lower opercular edge at its 

 junction with suboperclc if projected would meet first dorsal ray; 

 jaws equal, premaxiUaries deeply and narrowly notched; gill rakers 

 55 + 73 to 85, slightly longer than snout; vertebrae 50; D. 20 or 21 

 (counting first short rays); A. 15 to 17; scales in lateral series 49 to 

 52; in transverse 18 to 20; dorsal scutes 24 to 28; ventral scutes 

 20+16; branchiostegals 9 or 10. 



Dorsal inserted very slightly nearer tip of snout than caudal ; ven- 

 trals under its ant(>rior third; pectorals reaching two-thirds distance 

 to ventral bases; base of anal three-fourths length of that of dorsal, 

 which is If to 1§ in head. 



A line of scutes along upper edge of l)ody before dorsal, ventral 

 edge from isthmus to anus with scutes, spines strongest between 

 ventrals and anus, but slightly evident anteriorly, their number 

 comparatively constant; scjiles showing but slight traces of pectina- 

 tion; edge not very irregular. 



