116 IHJLLETIN OF THE BUREAU OF FISHERIES. 



described and witli which it might be readily confused at first siglit. A. mmii: ir,i,-iixis, however, does 

 not attain one-half the size of the latter, the distribution of the darks|"ii- ii|i'.ii tli>> .lursuni is markedly 

 different, and the tentacles are altogether unlike, being in A.monternj, i(.<i.- lUittciied and auriculate, 

 with an external groove, w^hile in Anisodoris nubilis they are elongate and digitiform. An examina- 

 tion of the internal anatomy reveals very important points of difference, notably the absence of a 

 prostate gland in this species, while in Anisodoris nobilig a very large prostata is present. 

 A specimen deposited in V. S. National Museum (no. 181285). 



Genus 2. ANISODOKIS Bergh. 



iig Plate, Fauiift Chilensis. Heft 3, 189S. p. 508. 



Form of body, tentacles and branchiae as in Archidoris. Large prostate gland present. Vagina 

 and penis unarmed. 



In my preliminary paper upon the Dorididse of Monterey Bay, a new genus, Moniereinn, was pro- 

 posed for the reception of a species which differed strikingly from the other genera of the Archidori- 

 din:*". My description of this form was written in 1894 practically as it appeared in 1905 in the paper 

 cited aljove, and inadvertently, in revising the manuscript, the important paper of Bergh (1898) upon 

 tlie Opisthobranchs of Chile in the Plate collection was overlooked. A new genus, Anisodoris, with 

 which Montereina is practically identical, is described in this paper by Bergh. The slight difference 

 of long cylindrical tentacles in the Monterey form is hardly sutiicient to warrant its retention as a 

 distinct genus, and Montereina must therefore be regarded as a synonym. To the genus Anisodoris 

 Bergh has assigned the following species, all from Chile: (1) An. punctuolata (d'Orbigny). (2) Ax. 

 variolata (d'Orbigny). (3) An. marmorata Bergh. (4) An. tessellata Bergh. 



To this list is here added the following Monterey form, which is distinct from these. The genus 

 thus far appears to be limited to the Pacific coast of North and South America. 



2. Anisodoris nobilis (MacFarland). 

 [PI. xvni, figs. 0-11: pi. x.xii, fig.s. 1 and 2.] 

 Mtniierema nubilis MacFarland. op. cit., p. 3.S. 



Body very large, plump, arched, but little depressed, sloping abruptly in front (pi. xxii, fig. 1), less 

 so behind. Broad, elongate, elliptical in outline, the ends nearly equally rounded. General ground 

 color a rich orange yellow, varying to light yellow in some specimens (pi. x.^ii, figs. 1,2). Dorsum 

 thickly tuberculate, the tubercles slightly inflated at the outer end, giving them a knob-like appearance. 

 The largest tubercles are 1.5 mm. in diameter by 2 mm. in height, decreasing in size as the mantle 

 margin is approached. Between the large tubercles smaller ones are everywhere closely set. Dorsum 

 mottled everywhere between the tubercles with irregular blotches of dark brown or black. The total 

 amount of this mottling may vary within wide limits, some individuals being quite light yellow 

 while others are very dark (pi. x.xii, fig. 2). Branchial plumes pinkish, tipped with white. 



Length up to 20 cm., width to 6 cm., and height up to 3 cm. 



Mantle everywhere projecting far beyond the foot save behind, where the tip of the tail protrudes 

 for varying lengths. Sides of body not high, smooth, light yellow. 



Foot broad, smooth, light yellow in color, abruptly rounded in front, more gradually so behind, 

 its anterior margin bilabiate with a slight median notch. 



Mouth relatively small, lips fleshy, the oral tentacles digitiform, bluntly conical, 5 mm. long, 

 directed forward and curved outward toward the tips (pi. xviii, fig. 6). 



Rhinophores stout, the stalk conical, the clavus perfoliate with about 24 leaves, deeply retractile 

 within low sheaths, the margins of which are tuberculate. 



Branchial plumes 6, large, spreading, tri- and quadripinnate, when fully extended covering the 

 whole of the posterior dorsum. A thin membrane-like expansion joins the bases of the plumes. 



Anal papilla large, cylindro-conical, blunt, occupying the center of the circle of branchite. 



Renal papilla small, at right and in front of anal papilla, between the bases of the first and second 

 anterior plumes on right side. 



Blood glands in two distinct portions of nearly equal size, both flattened, finely lobulate, and 

 irregular in outline. The anterior gland lies in front of the cerebral ganglia upon the pharyngeal 



