AGLAJA. 47 



This species seems to be variable in coloration like the preceding, 

 and even to a greater degree. The snow-white pearl-like spots of 

 A. tricolorata which are so conspicuous, seem to be represented in 

 this form by more irregular white spots. The posterior wings of the 

 mantle have an entirely different form from those of tricolorata, and 

 pass into each other bow-like at their bases. There is never a flagel- 

 lum on the left wing. The shell resembles that of tricolorata, but 

 the spire is more free, and the cuticular part of the shell is larger. 

 The colors seem to be well retained in alcohol. 



A. CYANEA v. Martens. Unfigured. 



In life uniform blue or with small round yellow spots. Spirit 

 examples blackish with pale spots, covered with numerous net-like 

 anastomosing wrinkles. 50 mill, long; head-shield 26 mill. long. 

 Breadth with parapodia turned up 26, with them spread out 43 

 mill. Distinguished from the Mediterranean species by the propor- 

 tionally smaller length of the head-shield. (Mart.'). 



Inhambane, E. Africa (Peters). 



D. cyaneum MART., Monatsber. K.-P. Akad. Wissensch. zu Berlin 

 1879, p. 738 (1880). D. cyaneum var. vittatum MART., Beitr. zur 

 Meeresfauna Mauritius, etc., p. 305. 



It is called by the natives miguedua, which signifies sleeps not. 

 Var. VITTATA Martens. 



Living animal 7 cm. long, '3-4 cm. wide. Back brown with 

 brimstone-yellow spots ; on the head two brown-yellow longitudinal 

 lines, on the back two brown-yellow spots. Foot-edges, head and 

 mantle edged with blue and yellow ; sole bluish-brown. In the 

 single spirit specimen the brown-yellow longitudinal bands on both 

 sides on head-shield and on foot-margin have been well retained, 

 but not the spots on the back. (Mart.). 



Fouquets, Mauritius (Mobius). 



A. NIGRA v. Martens. Unfigured. 



Living animal black with clear yellow and orange-yellow spots 

 and bands, and indigo-blue edges, the spots sometimes very sparse. 

 Spirit examples 19 mill, long, 8 mill, wide with the parapodia turned 

 upward, 15 with them spread out. Head-disk 10 mill, long, granule- 

 wrinkled. Internal shell strong, chalky. (Mart.). 



Querimba Is., E. Africa (Peters). 



