MUSEUM OF COMPARATIVE ZOOLOGY, 69 



Fig. 3. Paramuricen rjrandis V. Part of a branch. Enlarged 4 diameters. 



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

 )', /, Ic, flattened irregular spicula from the coencncli^ma ; h, one of the 

 curved or bow-sluipod 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 borealis V. Terminal branch and branchlet. Enlarged 2 

 diameters. From a dried specimen. 



" 5. Tlie same. One of the calicles from the original type-specimen (dry). 

 Enlarged 8 diameters. 



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

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

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

 tacles. Enlarged 40 diameters. 



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

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



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

 alcoholic example. 



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



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



PLATE IV. 



Fig. 1. Lepidisis caryophjlUa V. Lower portion of the stalk, with the root-like 

 basal lobes. Natural size. 



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

 specimen. Enlarged 4 diameters. 



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

 calicles. Enlarged 75 diameters. 



" IV. The same. Spicula of the calicles: d, one of the large marginal spines; 

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

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

 Enlarged 22 diameters. 



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

 eters. 



" 2. AcaneUa Normani V. Part of the denuded axis, to show the mode of 

 branching. Natural size. 



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

 diameters. 



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



but not of the largest size ; d, e, smaller spicula found both in the cal- 

 icles and coenenchyma; f, one of those found in tlie tentacles. Enlarged 

 22 diameters. 

 3. Cerafoisis ornatn V. Part of the denuded axis. N.ntural size. 



3 a, 3 b. The same. Two calicles from different parts of a large alcoholic 



