DALL: MOLLUSCA AND BRACHIOPODA. 315 
Antistreptus magellanicus Datu. 
Plate 15, figure 14. 
Antistreptus magellanicus Dall, Proc. U. S. Nat. Mus., 1902, 24, p. 532. 
Glypteuthria contraria Strebel, Schwed. Sudpolar Exp., 1908, 6, 1, p. 29, pl. 1 
figs, 4 a-c. 
, 
U.S. 5S. “Albatross,” station 2773, near the eastern entrance to the Magellan 
Straits, in 10 fathoms, sand, temperature about 50° F. U.S. N. Mus. 96,190. 
Also at station 2777, in the strait, in 20 fathoms, gravel. North Argentine coast 
in latitude 37° 57’ S., in about 50 fathoms, sand. 
Strebel’s specimens, of which he gives an excellent figure, are somewhat more 
mature than ours, but did not contain the animal, so that a knowledge of the 
operculum is still a desideratum. 
STREPTODONTA. 
Ptenoglossa. 
Scalidae. 
EPITONEUN Boitren. 
Scala (anonymous) Mus. Calonnianum, 1797, p. 23; type, Turbo scalaris Linné. 
Epitonium (first section) Bolten, Mus. Boltenianum, 1798, p. 91; first species, Turbo 
scalaris Gmelin. 
Cyclostoma Lamarck, Prodrome, 1799, p. 74; sole example, Turbo scalaris Linné. 
Scala Dall, Bull. Mus. Comp. Zool., 1889, 18, p. 299. 
Twenty years ago I discussed the synonymy of this family, showing that if a 
diagnosis is required to validate a generic name there is no escape from accepting 
the name of Cyclostoma for the wentletraps. I proposed to take the anomymous 
name usually, at that time (but wrongly as we now know), ascribed to Hum- 
phrey. Since then much has been done to clarify the rules governing these 
matters, and it is generally conceded that an anonymous pamphlet with no osten- 
sible publisher cannot be cited in nomenclature for valid generic names. The 
next name in order is Epitonium of Bolten, of which the first section is identical 
with Scala. »I have decided to adopt this, as to further oppose the change would 
only put off the evil day, and it is best to get it over. 
Ferminoscala DAtt, nov. 
Whorls in contact, turritelloid, reticulate, with a single heavy varix for the 
fully mature shell; base with no umbilicus, a basal disk present; type, Scala 
Serminiana Dall. 
