536 Prodromus of the 



to the distal end, united by a transverse horizontal mem- 

 brane, which divides each of the four quadrant camerse of 

 the disc into two superposed spaces, the oral one of which 

 forms a cul de sac, or claustrum* opening at the axial end, 

 and includes the genitalia. Halimoct/athus, Craterolophus, 

 Manama, Carduella, Depastrum. 



2d. — Family. ELEUTHEROCARPID.E. H. James-Clark. 



Each genital half, projecting freely f into the discal 

 camerae, extends in a direct line from the inner or axial 

 end of a partition to or toward the end of an arm ; the 

 four quadrant cameras of the disc simple. Lucernaria, 

 Calvadosia, Halidystus. 



Family. CLEISTOCARPID.E. II. J. C. 



HALiMOCYAxnus.t H. James-Clark. 



Disc infundibuliform, octohedral ; arms produced : ped- 

 icel tetracamerous : tentacles in groups at the end of the 

 arms, outer row pistilliform like the marginal anchors, 

 radial development of the group greater than the trans- 

 verse : marginal anchors pistilliform : genital halves trans- 

 versely folded bands, united at their proximal ends across 

 the end of the intervening partition, their distal ends reach 

 nearly to the marginal anchors ; the digitate bodies do not 

 extend across the proximal end of the partitions : muscles 

 of the pedicel four filaments alternate with the four came- 

 ra? : principal muscles of the disc eight ligulate bands, 

 arising from the proximate ends of the partitions, extend 



* Hence tlie name of the familj' KZa'w, to confine ; Kap-6g fruit, 

 t 'EXrinJfpof, free. , 



\ 'KTufiog, marine; Kva^o^, cup. 



