CTRRIPEDIA. 



145 



Tlie penis is extremely long and fine and hears a few scattered hairs. Although 

 the remainder of the body is almost colourless, this organ is of a deep horn-colour, 

 minutely ringed with purplish brown. The latter tint evidently represents a pigment 

 common in Barnacles, bui more usually associated with the mouth parts. In 

 Scalpdlum alcockianum it colours the limbs almost black, while in Balanus ceneas 

 it tinges the softer structures connected with the mouth. Many other examples 

 of its occurrence might also he 'noted in both sections of the non-parasitic Cirripedes, 

 both in shallow and in deep water. 



A. cyaihus has not previously been recorded from the Indian region, and is 

 probably a scarce form where it occurs ; but its distribution is evidently circum- 

 tropical. 



*Acasta funiculorum, n. sp. Figs. 5-9. 



Locality : Gulf of Manaar. 



Diagnosis. Rostrum and laterals greatly enlarged ; carino-laterals much reduced, 

 generally shorter than the rostrum by about two-thirds. Radii of rostrum very 



Fig. 5. 



Fig. 6. 







6 k io 



9.x to. 



Fig. 9. 



7.xl6 



Fig. 7. 



Fig. 5. A casta funiculorum, n. sp., lateral view, x 10. 

 6. ,, view from above, x 10. 



,, 7. ,, ,, tergum, external view, x 16. 



,, 8. ,, scutum, ,, x 16. 



9. rostrum, internal view, x 10 (smaller specimen). 



U 



