74 TELEOSTEI : ISOSPOXDYLI. — XIII. 



dant, spawning in sea ; used for oil and manure. (A parasitic 

 crustacean, Oniscus pr<zgustator Latrobe, is found in the mouth of 

 this fish. The names of both species refer to this fact; the ancient 

 Roman Emperors (tyranni) having had their tasters (prcegusta- 

 tores) to try their food before them, to prevent poisoning.) 



75. DOROSOMA Kafinesque. (bopos, lance ; awpa, body.) 



175. D. cepedianum (Le Sueur). Gizzard Shad. Hickory 

 Shad. Mud Shad. White-eyed Shad. Hairy-back. Body 

 deep, compressed; the scales thin, deciduous; head small; snout 

 short, blunt; mandible enlarged at base ; gill rakers very slender, 

 not very long ; an adipose eyelid; D. about median, its filament 

 about as long as head ; C. widely forked, its lower lobes longer ; 

 belly sharply serrate. Bluish, sides silvery; young with a round 

 dark shoulder spot. Head 41; depth 2\ (2 to 3); eye 4^ in head. 

 D. 12. A. 31. Lat. 1. 56. Scutes 17-j-l 2. L. 15. Cape Cod 10 

 Mexico ; abundant S. entering all rivers ; permanently resident 

 throughout the Miss. Valley. A handsome, mud-loving fish, nearly 

 worthless as food. (To Bernard Germain Etienne, Cointe de La 

 Cepede, afterwards " Citoyen Lacepede.") 



Family XXXI. STOLEPHORID^h (The Axchovies.) 



Body elongate, compressed, with thin, deciduous scales ; mouth 

 very large; the pointed, pig-like snout, usually extending beyond 

 it ; maxillary very long and slender, of about 3 pieces, extending 

 backward far beyond the eye; premaxillaries small; teeth usually 

 very small; eye large, well forward; gill rakers long and slender. 

 B. 7 to 14 ; no lateral line ; belly rounded, or weakly serrate ; no 

 adipose fin ; C. forked. Small fishes swimming in large schools, 

 abundant in all warm seas. Genera 9, species about 65, most of 

 them belonging to Stolephorus. 



a. Gill membranes scarcely connected ; gill openings very wide ; no pectoral 

 61araents; A. moderate, beginning behind D.; lower jaw included; max- 

 illary not extending beyond gill openings; teeth very small or wanting. 



Stolephokus, 7G. 



76. STOLEPHORUS Lacepede. (Engraulis Cuvier.) (otoAij, 

 a stole; (popos, bearing, in allusion to the silvery band.) 



a. Body compressed, moderately elongate, the depth more than one-fifth the 

 length; insertion of I>. nearer ('. than tip of snout. 

 b. Anal long, its rays about :2i>, its base 3§ in body. 



17<j. S. mitchilli (Cuv. & Val.). Snout rather blunt, little pro- 

 ject in;:: body much compressed; both jaws with teeth ; eye very 

 large. Pale, a narrow, diffuse, silvery lateral band, little broader 

 than pupil. Head 3|; depth 4. D. 14. A. 2G. Lat. 1. 3 7. L. 2h 





