Genus DISCODORIS, Bergh, 1877. 



Discodoris, Bergh. Jahrbiicher der deutschen Malakozoo- 

 logischen Gesellschaft, IV, 1877, p. 61. — Malacologische 

 Untersuchungen, XII, 1877, p. 518. — Mai. Unters. 

 XV, 1884, p. 658. —Mai. Unters. Supplement Heft I, 

 1880, p. 47: II, 1881, p. 108. —Mai. Unters. XVII, 1890, 

 p. 895. — System der Nudibranchiaten Gasteropoden. 

 1892, p. 102. — Challenger Reports, X, 1884, p. 92. 

 — Die Opisthobranchiata der Siboga Expedition. 1905, 

 p. 98. 



Body rather soft, rounded or oval in outline; branchial 

 aperture slightly crenulate, stellate or bilabiate ; the anterior mar- 

 gin of the foot bilabiate, the upper lip more or less notched. 



Prostate gland large. 



Discodoris branneri Sp. Nov. 

 Plate XII, figs. 58-65. 



One specimen of this form was taken at Riacho Doce, 

 Alagoas, and was preserved in formalin, followed by alcohol. 

 The rhinophores and branchiae are completely retracted, the 

 whole specimen being slightly contracted and rolled up. No 

 notes accompanied it save that of locality alone. 



External Characters. 



Form. Color. The body is depressed, linear oblong with 

 bluntly rounded anterior and posterior ends. The dorsum is 

 minutely villous, being everywhere covered with minute conical 

 papillae. The mantle edge is thin and broad, extending far 

 beyond the margin of the foot, and is fully one-half the width 

 of the latter in the preserved specimen. The general ground 

 color of the dorsum is pinkish, with thickly scattered irregular 

 blotches of brown everywhere over its surface. Along the sides 

 of the dorsum is a longitudinal row of five or six larger black 

 spots about equidistant from each other. 



Foot. The foot is smooth, almost linear, its anterior and 

 posterior ends bluntly rounded. The anterior margin of the 

 foot is thickened, and deeply bilabiate, the upper lip bilobed by 



