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give kowever some additional observations on some similar cases. 



When in Batavia I often dredged in the Bay of that name 

 an Opbiurid, liviug in tbe mud at a deptb of 12 to 20 fathoms, 

 with very long arms and an extraordinary small disk, as I tbougbt. 

 On account of the want of literature there for tbe determination 

 of Ophiurids, I did not exaniine tbe examples more thoroughly, but 

 only collected some ten specimens, some of wbicb lived for weeks 

 in my aquarium. 



Now that I am going over the collections of the Ophiurids of 

 the Amsterdam Museum, and bave studied at the same time my 

 own collection witb more care, I regret that I didn't collect many 

 more examples of this curious form, as without doubt this is a 

 case similar to that mentioned by Jeffrey Bell. 



In Fig. 1. I give a sketch of the dorsal face of tbe disk, 



v ' h 



with the bases of tbe arms. Tbe mouth-frames are very strong 

 with four prominent edges, tbe two outer ones much higher thau 

 tbe inner ones. Between tbe edges of the adjacent pieces the 



