138 ORHAMANDAL MARINE ZOOLOGY REPORT 



proposed, and the new species of Antiopella is so near to A. novozealandica that the 

 question naturally arises if it is more than a variety. The obvious inference is that this 

 corner of the Indian Ocean is developing varieties which are in a fair way to fix 

 themselves as species. To the best of my belief the only other nudibranchs recorded 

 from this coast are comprised in a collection made by Mr. W. Townsend partly at 

 Karachi and partly at Maskat and on the coast of southern Persia. They were 

 described by me in the Journal of Conchology for 1905, pp. 237-256. The species 

 recorded from Karachi are *Bornella digitata, Tkecacera maculata, Goniodoris 

 modesta (?), Chromodoris semperi, *Chr. petechialis, Doriopsilla miniata, Doridopsis 

 rubra. The two species marked with an asterisk are represented in the present 

 collection. 



Chromodoris petechialis (Gould). 



Gould, U.S. Exploring Exped. 1838-42, vol. 12, p. 296 ; Atlas, figs. 391, 391 a; Eliot, Nudibranchs 

 from the Pacific, in Proc. Malac. Soe. 1904, pp. 231-2 ; Eliot, Notes on a Collection of Nudibranchs 

 dredged near Karachi and Maskat, in Jour, of Conchol., 1905, pp. 250-1. 



Two specimens of much the same size and appearance. They are about 26 mm. 

 long, 22 mm. broad, and 12 mm. high, stout, broad and soft. At first sight the colour 

 appears to be a uniform flesh tint without markings. On a closer examination, the 

 mantle margins and portions of the dorsal surface are seen to be more opaque than the 

 rest, and it is probable that in life there were spots on the back and a coloured border. 

 The foot is grooved in front, but not notched, and there is a short, stout tentacle on 

 either side of the mouth. The branchiae are deeply retracted into the pocket, which is 

 closed in both specimens : they are 12, simply pinnate, and yellowish. 



The intestines are of a deep reddish purple, but the yellowish hermaphrodite gland 

 (which is very small) forms a dendritic pattern contrasting strongly with the dark 

 mass of the liver. The labial armature is purplish and forms a nearly complete ring, 

 which, however, is interrupted at one point. The elements of it are minute bent rods 

 Avhich bear an accessory denticle near the tip and hence generally appear to have 

 irregularly cleft ends. The formula of the radula is about 90x85. 0.8 5. The first 

 tooth is broad, with a shoulder projecting into the rhachis, and denticulate on both 

 sides. The second tooth is also broad and denticulate on the outer side only. The 

 remaining teeth are erect and bear 7-10 denticles on the outer side. Those at the end 

 of the row are rather taller than is usual in the genus and bear 4-5 denticles on the 

 apex. 



I think these animals are the same as the specimens from Karachi described by 

 me in the paper referred to above as Chromodoris petechialis. They are, however, 

 twice as large and therefore have larger raduhe. It is impossible to say whether the 

 spots and borders have faded or whether they were faint in the living animals. In 

 the latter case, the specimens probably are the Chromodoris picta of Pease from the 



