CLASS GASTROPODA 
47 
punctured with yellow. The length, to base of posterior wings, 3.8 cm.; 
alt., 2.8; breadth, 3.2 cm. The length of head-shield is 2 cm., that of 
posterior wings 1.2 cm. Length of the contracted gill 1.5 cm. Shell 
without trace of calcification, horn-yellow, on anterior margin quite color¬ 
less, thin, only on the back margin a little thickened. Form as usual, the 
spire not solute, its continuation downward and forward not large, the 
last extension of the last whorl backward not long; transverse diameter 
of the shell about 13 mm. (Dali.) 
Type locality, Catalina Island, California. 
Range. Known only from type locality. 
Aglaja diomedia Bergh, 1894 
Bulletin, Museum of Comparative Zoology, 25: 211; PI. 11, fig. 1. Tryon and Pilsbry, 
Manual of Conchology, 16: 52; PI. 1, fig. 14; PI. 15, fig. 95. 
Color dark brownish-black, with sparsely strewn whitish and yellowish 
flecks on the back, foot, and outside of parapodia; side margins of posterior 
shield dirty light-yellowish; sides of body and furrow between anterior 
and posterior shields, bluish-gray; upper side of foot-wings and the upper 
side of tail grayish, the gill yellow. Color in life said to be nearly black. 
Form as usual. Black shield somewhat longer than the head-shield; no 
trace of olfactory organ discoverable. Hind wings of mantle contracted, 
seeming to be not much developed, not connected above, pretty rigid, with 
round hind end, the left one lacking a flagellum. The shell was of peculiar 
form, relatively larger and longer than in other species, in the largest 
individual 5 mm. long, 3.4 broad. It was entirely calcified, relatively thick, 
somewhat thinner in front, and more yellowish there, otherwise chalk- 
white. The spire small, not free; the process directed forward and down¬ 
ward large, the hollow in it adjacent to spire pretty deep. (Tryon and 
Pilsbry, Manual of Conchology.) 
Type in United States National Museum? Type locality, Alaska. 
Range. Shumagin and Kadiak Islands, Alaska. 
Aglaja ocelligera Bergh, 1894 
Bulletin , Museum of Comparative Zoology, 25: 211; PI. 11, fig. 1. Tryon and Pilsbry, 
Manual of Conchology, 16: 53; PI. 14, figs. 82, 83, 84. 
Von dieser Form lag ein einzigas Individuum vor, bei Sitka-Harbor in 
Mai 1874 aus einer Tiefe von 15 Faden auf Steingrund gefischt. 
Es war ziemlich zusammengezogen 12 mm. lang bei einer Hohe von 9 
und einer Breite von 9. Die Farbe der Schilder so wie der Aussenseite 
der Fussfltigel graubraun mit einer Menge von weisslichen ruden Flecken; 
uebereste von einer helleren Einfassung der Schilder und der Fliigel 
[471 
