ELIOX : NTJDIBEANCHIATA FROM CAPE VERD ISLANDS. 153 



It is with considerable hesitation that I create a new species for 

 this form. The important diiferences in the genus Doto are small, 

 and the species are very variable. Still, the five specimens collected 

 by Mr. Crossland all agree in having a distinctive coloration, and a 

 remarkable shape of the rhinophore-sheaths, which is perhaps constant. 

 They present some resemblances to Boto Africana, Eliot, and Doto 

 splendida, Trinchese. But it is primd facie not likely that the species 

 found on the east and west coasts of the African continent are 

 identical, and Bergh suggests that Doto splendida is the same as 

 D. pinnatifida. I do not think that this species is the same as Doto 

 pinnatifida, for the skin is smooth, whereas in D. pinnatifida it bears 

 small tubercles on the back and sides. 



DoTO ciNEREA, Triuch. 

 Doto cinerea, Trinchese : JEolid. Porto di Genova, pt. ii, p. 92, pi. Iv, 

 fig. 1 ; Vayssiere, Ann. Mus. Marseille, vol. iii, No. 4, p. 102, 

 pi. ii, figs. 5-5b (1888). 



Two specimens from Porto Praya, Cape Verd Islands, found on 

 Sertularia. 



The notes on the living animals say they were narrow and elongate, 

 square-cut in front, and tapering behind. The larger specimen had 

 four symmetrical pairs of cerata ; the smaller, five irregular sets. 

 These consisted of (1) a regular pair, (2) a pair consisting of a large 

 cera on the right and a small one on the left, (3) similar to the last 

 pair, but the large one on the left and the small one on the right, 

 (4) one only on left, (5) one median. The colour was dull dirty 

 yellow, covered with irregular blotches of black, especially in the 

 mid-dorsal area. The edges of the velum and of the rhinophore- 

 sheaths bore clear, opaque white dots. Liver branches drab yellow. 

 The tubercles on the cerata were blue and black in the smaller 

 specimen, bluish-white in the larger. 



The preserved specimens answer to this description. The largest is 

 4 mm. long, and its largest cerata 1 mm. high. The tubercles on the 

 cerata are rather elongate and irregularly arranged. In the larger 

 specimen their tips are white, with a dark band below this white 

 part. The rhinophore-sheaths are rather long, with slightly crenulate 

 edges. The general colour of the animals is yellowish, with 

 numerous blackish or brown spots, which are particularly thick down 

 the centre of the back. The foot and the rims of the rhinophore- 

 sheaths are yellow. The foot is broad. The buccal parts are as 

 described by Vayssiere. The teeth have two or three irregular and 

 indistinct denticles at the sides of the median cusp. 



This appears to be the D. cinerea of Trinchese, recorded from Genoa 

 and Marseilles. As these specimens seem rather darker than those 

 previously described, they may perhaps be called var. nigromaculata. 



Sptirilla neapolitana (Delle Chiaje). 

 Spurilla neapolitana (Delle Chiaje), Bergh : Yerhandl. zool.-botan. 

 Wien, 1882, vol. xxxii, p. 13, pi. i, figs. 10-21 ; Vayssiere, Ann. 

 Mus. Marseille, vol. iii. No. 4, p. 112, pi. v, figs. 71-79 (1888). 



VOL. Til. — SEPTEMBEK., 1906. 11 



