1920.] NATURAL SCIENCES OF PHILADELPHIA. 379 



straightened outwardly, concave within, dilated and very broad 

 towards the base. Outer hp thin-edged. 



Altitude 2.6, diameter 2.6 mm. 



Off Waikiki, 25-50 fms. D. B. Langford. This species agrees 

 partly with Pease's L. costata (Maui), but that is said to be "mottled 

 and spotted with white, black and brown." It is also larger. 



Leptothyra viaria n. sp. Fig. 13. 



The shell is solid, narrowly umbilicate, buff-white with small 

 scattered olivaceous dots. Sculpture of about 5 smooth larger 

 cords in the peripheral region, about 4 smaller ones on the base, the 

 intervals of all finely striate spirally; above the peripheral cords 

 there are subequal spiral threads, 7 in the type specimen; the 

 penult whorl is angulated in the middle. UmbiHcus is surrounded by 

 a rounded, radially phcate ridge. The columella is narrow above, 

 very much produced basally, with a broad, excavated face. Outer 

 lip thin. 



Altitude 3.7, diameter 3.5 mm. ._:'. 



Honolulu, type locality, and Haleiwa, Pilsbry. 



Apparently related to L. costata Pse., but differing in proportions 

 and various other details from that still unfigured species. 



Siphonaria normalis Gld. 



Specimens from numerous places on all of the islands except 



Lanai and Niihau examined, often in large series. There are many 



local forms, but so far as I can see, but one species, S. normalis Gld., 



which varies extraordinarily in size, color and sculpture. The 



following names are on the Hawaiian list. 



S. normalis Gld. Proc. Bost. Soc. N. H. ii, 1846, p. 178; Otia Conch, pp. 

 12, 242; U. S. Expl. Exped., MoUusca, p. 359, pi. 30, fig. 468. 



The type was a small, dark subregular form, 10 mm. long. 

 S. amara Nuttall, Reeve, Conch Icon., IX, 1856, pi. 7, fig. 33 ("California"). 



Said by Keeve to be from California, but this was a mistake. A 

 set given by Nuttall is labelled "Atooi" (= Kauai). Carpenter has 

 noted this in his MoUusca of Western North America. 



S. funiculata Reeve, Conch. Icon. IX, pi. 7, fig. 35 (Hab. unknown). Name 

 changed to S. lirata on index page, a.s funiculata had been used for another 

 species. 



This is the very black form. 

 S. nutlalli Hanley, Proc. Zool. Soc. Lond., 1858, p. 152 (Ins. Sandwich). 



S. crehricostata Nuttall Ms. was placed by Reeve in the syn- 

 onymy of >S. sipho Sowb., but it was really a Hawaiian shell., a> 

 rather large form of S. normalis. 



