158 PEOCEEDINQS OF THE ACADEMY OF [1884. 



Apeltines with the branchial apertures restricted and three free 

 dorsal spines. 



Type, A quadracus = Gasterosteus quadracus Mitch. 



Gasterosteinse. 



Synonyms as subfamilies. 



< Q aster osteini, Bonaparte, Giom. Accad. di Scienze, v. 52 (Saggio Dis- 



trib. Metod. Animali Vertebr. a Sangue Freddo, p. 32), 1832 ; Nuovi 

 Annali delle Sci. Nat., t. 2, p. 133, 1838 ; t. 4, p. 275, 1840. 



< Gasterosteinm, Gill, Cat, Fishes E. Coast N. A., p. 39, 1861 ; Canad. 



Nat., n. s., V. 2, p. 8, 1865. 



Gasterosteids with post-thoracic ventrals, pubic bones con- 

 nected and constituting a triangular median plate, a moderately 

 projecting snout, and a moderate caudal peduncle. 



EUCALIA. Jordan. 

 ^Eucalia, Jordan, Man. Vertebrates Northern U. S., p. 248, 1876. 

 Gasterosteus sp., Kirtland, Agassiz, et al. 



Gasterosteines with the branchial apertures confluent, and four 

 or five non-divergent and equally reclinable free dorsal spines. 

 Type, E. inconstans = Gasterosteus inconstans Kirtland. 



PYGOSTEUS. 



<C Leiurus, Swainson, Nat. Hist, and Class. Fishes, etc., v. 2, pp. 175, 242 



(subgenus). 

 = Pygosteus (Brevoort), Gill, Cat. Fishes E. Coast N. A., p. 39, 1861 ; 



Canad. Nat., n. s., v. 2, p. 8. 

 = Pygosteus, Jordan, Man. Vertebrates Northern U. S., p. 249, 1876. 

 =: Gasterostea, Sauvage, Nouv. Arch. Mus. d'Hist. Nat. Paris, t. 10, pp. 



7, 29, 1874. (Subgenus). 

 Gasterosteus sp., Artedi, Linnaeus, Lacepede, Cuvier, Fleming, Cuv. & 



Val., Girard, Giinther, etc. 

 Gasteracanthus sp., Pallas. 



Gasterosteines with the branchial apertures confluent (the 

 branchiostegal membrane having a free inferior margin), and 

 seven to eleven generally divergent spines. 



Type, P. pungitius = Gasterosteus pungitius L. 



GASTEROSTEUS. 



< Gasterosteus, Artedi, Genera Piscium, p. 52, 1738. 



< Gasterosteus, Linnaeus, Syst. Nat., ed. x, t. 1, p, 295, 1758. 

 <; Gasterosteus, Lacepede, Hist, des Poissons, t. 3, p. — , 1802. 



<; Gasteracanthus, Pallas, Zoographia Ross- o- Asia tica, t. 3, p. 228 (1811), 

 1831, 



