MUSEUM OF COMPAKATIVE ZOOLOGY, 69 



Fig. 3. Paramuricea grandis V. Part of a branch. Enlarged 4 diameters. 



" 3 a. The same. Spicula : c, d, spinose spicula from the margin of the caiicles ; 

 i,j, I; flattened irregular spicula from the coenenchj^ma ; /;, one of tiie 

 curved or bow-shaped spicula from the bases of the tentacles ; 'j, one 

 of the fusiform spicula from the stem of a tentacle. Enlarged 40 

 diameters. 



" 3 b. The same. One of the spicula from the tentacles. Enlarged 75 diam- 

 eters. 



" 4. Paramuricea borraUs V. Terminal branch and branchlet. Enlarged 2 

 diameters. From a dried specimen. 



" 5. The same. One of the caiicles from the original type-specimen (dry). 

 Enlarged 8 diameters. 



" 5a. The same. Spicula: c, d, e, spinous spicula from around the margin of 

 the caiicles ; g, one of the irregular flattened spicula from the caiicles ; 

 /, one of the transverse, bow-shaped spicula from the bases of the ten- 

 tacles. Enlarged 40 diameters. 



" 5 a'. The same. Spicula from the coenenchyma : i, one of the small warted 

 spicula; j, k, I, irregular and bent forms. Enlarged 40 diameters. 



" 6. Gersemia Jongiflora V. One of the branches. Natural size. From the 

 alcoholic example. 



" 6 a. The same. One of the caiicles. Enlarged 4 diameters. 



" 6 b. The same. Spicula : c, d, e, oblong and fusiform ; f, g, compound forms. 



PLATE IV. 



Fig. 1. Lepidisis caryophi/llia V. Lower portion of the stalk, with the root-like 

 basal lobes. Natural size. 



" 1 a. The same. Portion of the stem with three caiicles, from an alcoholic 

 specimen. Enlarged 4 diameters. 



" 1 b. Tlie same. Proximal end of one of the large spine-like spicula of the 

 caiicles. Enlarged 75 diameters. 



" 1 b'. Tlie same. Spicula of the caiicles : d, one of the large marginal spines ; 

 e, a marginal or subraarginal spine with the tip less projecting; /, one 

 of the small lateral spicula; g, h, i, small spicula from the tentacles. 

 Enlarged 22 diameters. 



" Ic. The same. Scale-like spicula of the coenenchyma. Enlarged 75 diam- 

 eters. 



" 2. AcaneJIa Normmd V. Part of the denuded axis, to show the mode of 

 branching. Natural size. 



" 2 a. The same. Four caiicles at the end of a branch, from life. Enlarged 4 

 diameters. 

 2b. The same. Spicula : c, one of the long marginal .spines of the caiicles, 

 but not of tlie largest size ; d, e, smaller spicula found botli in the cai- 

 icles and ccEnenchyma; /; one of those found in the tentacles. Enlarged 

 22 diameters. 

 3. Crratoisis ornata V. Part of the denuded axis. Natural size. 

 3 a, 3 b. The same. Two caiicles from diflerent parts of a large alcoholic 



