G8 SIR CHARLES ELIOT ON [May 6, 



The pericai'dium (text-fig. 3, p. 66) is embedded in the body- 

 wall : its pulsations are visible externally. 



The kidney (text-fig. 3) is spread over the liver, and also on its 

 ventral surface, as a numlier of distinct branching tubes, which 

 continue in front of the liver, lying loosely in tlie body-cavity. 



The hermaphrodite gland (text-fig. 4, p. 67) consists of three 

 gi-anular, spherical bodies, somewhat on the right side of the 

 liver, one at each end and one in the middle, but not fused with 

 it or embedded in it. The ampulla is large. There is only one 

 spermatotheca. Prostates are absent, and the penis is small and 

 unarmed. 



It will thus be seen that in its internal structuie this animal 

 closely resembles Scyllma,. The only important difi:erence is that 

 the hepatic diverticula, are very small and extend only to the 

 bases of the wings, whereas in Scyllcea (? in all species) they aie 

 said to penetrate to the ends of the cei'ata and into the branchial 

 tufts. I have wondered whether the creature could be a young 

 Scylkea in which the liifiil lobes would subse juently divide into 

 two pairs of cei'ata, but the size, which is as large as that of most 

 Scyllmoi, rendei's this improbable. Taken in conjunction with the 

 character of the liver, the external diffei'ences (the wings instead 

 of two pairs of cerata, the absence of a caudal crest and of flaps 

 behind the rhinophores) seem sufficiently great to warrant the 

 creation of a new genus, which I have named Crosslandia after 

 Mr. Crossland, who dredged the first specimen. 



One of the specimens (PI. V. fig. 3) showed marked peculiarities, 

 and is certainly a well-defined variety if not of a distinct species. 

 The body was stouter and the outline more wrinkled and indented. 

 The colour was that of Fucus, with a few pointed sandy projections 

 and coi'alline jiuiple spots. If it proves to be a distinct species I 

 would call it C'.fasca. 



Melibe fimbriata Aid. ct Hanc. Trans. Zool. 8oc. vol. iii. pp. 137- 

 139 (1864). 



A large number of specimens of this i-emai-kable animal were 

 captured on both the east and west sides of Zanzibar in 1901. 

 Alder and Hancock's figui-e and desciiption give a good idea of 

 its external appearance; but the coloration is very variable, 

 I'anging from clear bright yellow to ashy grey. Sometimes the 

 colour is uniform, but more often the surface of the body and of 

 the papillie is marked with ii'regulai'ly disposed spots and blotches, 

 which may be black, wdiite, grey, or sandy. These markings 

 harmonize with the ordinary environment of the creature, and 

 cause it to closely lesemble a piece of seaweed besprinkled with 

 sand and partially enci'usted with sponges and other animal 

 growths. In full-grown and perfect sjiecimens, which are six 

 inches long or more, the number of papillae seems to be six or 

 seven on each side of the body ; but they ai-e vei-y easily detached, 

 and few individuals have the two series complete. 



I also found Aldei' and Hancock's description of the internal 

 [8] 



