POLYCH.ETA. 289 



preserved specimen. The simple capillary setae issue in two bundles, a dorsal bundle 

 of five long setae and a ventral bundle of about eight shorter setae. 



The anterior end of the body is produced as a transparent rostrum which 

 terminates in a white appendix (Plate V., fig. 120). The mouth lies below on the 

 level of the base of the rostrum, and the paired nuchal organs occur behind at a 

 distance from the mouth, equal to the latter's distance from the frontal extremity. 

 The long simple gills are traversed by blood-vessels. 



Arniandia leptocirris, Grtjbe. ('Aim. Semp.,' 1878, p. 194.) 



Locality : Cheval Paar, Gulf of Manaar. 



This species is twice as bulky as A. lanceolata. The essential differences are not 

 easy to specify by the examination of preserved material only. Length 21 "5 millims., 

 diameter 2 millims. ; 37 setigerous segments ; 27 gills, commencing at the second 

 setigerous segment; 20 marginal anal papillae, larger and smaller intermixed; 14 

 lateral eyes, commencing in front of the 6th gill. Nuchal organs lie in front of the 

 mouth ; metapleural ridges commence at the sides of the mouth. The most striking 

 feature of the specimen here described is the occurrence of several small cirriform 

 papillae protruding from the buccal orifice. Notopodia and neuropodia minute, 

 contiguous. 



Another example from Modragam Paar does not show the buccal papillae 

 protruding. 



Polyophthalmus australis, Grube Plate V., fig. 121. 



Two specimens from east side of Cheval Paar, one measuring 15 millims. long by 

 1 millim. wide; the other 8 millims. by 0'5 millim. 



The setae are extremely delicate and not obvious at first examination. The head is 

 rounded, the body with characteristic pigment markings figured by Grube (' Ann. 

 Semp.,' p. 196), and the anus is surrounded by a circlet of papillae. The body has the 

 consistency of that of an Ophelia. When placed in fluid of different density from 

 that in which it had been kept, it twitched convulsively like a Nematode. 



In the smaller specimen there are 26 setigerous segments, capillary setae in separate 

 dorsal and ventral fascicles, the latter issuing from a convex crateriform elevation. 

 The ciliated apparatus of the head, not figured by Grube, is shown on Plate V., 

 fig. 121. The lateral eyes were not distinct. 



Family : FLABELLIGERID^E. 



Stylarioides parmatus, Grube Plate VIII., fig. 5. 



Stylarioides parmatus, Grube, 'Ann. Semp.,' 1878, p. 199. 



Stylarioides iris, Michaelsen, ' Jahrb. Hamburg. Wiss. Anst.,' ix., p. 108. 



Muttuvaratu Paar. Four specimens, one very small. 



The distinction between & iris and S. parmatus is based upon the number of long 



2 P 



