AGLAJA. 45 
Japan: A. gigliolit. 
Sandwich Is.: A. nuttalli, “ Philinopsis” speciosa and nigra. 
W. coast of the Americas: A. maculata, purpurea, diomedea, ocel- 
ligera, adelle. 
West Indies: A. punctilucens and gemmata. 
The genus is not known fossil. 
A. TRICOLORATA Renier. PI. 1, figs. 10, 11; pl. 14, f. 81. pl. 13, 
figs. 71, 72, 73, 74, 75. 
Back of the body and outer surface of pleuropodial lobes chest- 
nut-brown or coffee colored, with round snow-white pearl-like dots ; 
border of dorsal shield aud pleuropodia marked with a narrow blue 
band, inside of which is an orange band. Posterior body lighter 
than the anterior; sole velvety-black with a bluish luster, with some 
small white dots in front and behind. Mantle with two deeply sep- 
arated lobes behind, the left one always provided with a flagellum or 
filament (pl. 1, figs. 10,11). Length 4-5 em., breadth with spread 
parapodia 2°5-2°8 em.; alt. to apex of frontal shield 1°6-1°9 to 1°3- 
1°5 cm. 
Specimens in alcohol retain the coloration remarkably well, but 
contract much, length 3 cm. 
Shell (pl. 14, fig. 81) proportionately smaller than in A. depictum, 
less concave; milk-white in the middle, more or less translucent 
toward the edges ; nucleus consisting of one whorl, the second whorl 
forming all of the dilated portion of the shell. 
Mediterranean Sea. 
Aglaja tricolorata Renter, Tav. di Classificazione pl. 8, (1807) ; 
Oss. postume di Zool. Adriat., 1847, p. 5, 7, pl. 16, f. 12, 13.—Dori- 
dium tricoloratum Beran, Mittheil. Zool. Sta. zu Neapel, xi, p. 111, 
pl. 8, f. 1-10; Bull. Mus. Comp. Zool., xxv, p. 208, pl. 12, f 4.— 
Doridium meckelii DELLE CHrIAsE, Mem. i, 1823, p. 117-123, 133, 
135-1386, pl. 10, f, 1-7.—Cuvirer, Regne Anim. 2d edit., ili, p. 64. 
—CANTRAINE, Malac. Medit., p. 74.—Acera meckelit Paiv., Enum. 
Moll. Sicil. ii, p. 98.——Doridium membranaceum Meckel V AyssIERE, 
Ann. des Sciences Naturelles Zool. (6), ix, p. 73 et seq., pl. 7, f. 56, 
57, 59-67 ; pl. 8, f. 68, 69; Rech. Moll. Opistobr., p. 48-49, pl. 2, 
f. 45-47. 
Besides the differences in the shell and coloration, this species dif- 
fers from A. depicta in having two deeply separated lobes on the 
