24 



opposite sides. There is usually a polyp terminating a branch; but often this is not the case. 

 The calyces are closelv approximated on the sides of the branches, being on the average not 

 more than i mm. apart. They are much more scattered on the front and back. 



The individual calyces are tubular in shape, surmounted by the rounded dome of the 

 pseudo-operculum. They project at right angles with the stem and branches. There are no 

 distinct marginal projections, and some of them attain a height of 3 mm. to the top of the 

 operculum ; but they do not average more than 2 mm. Their maximum diameter is 1.5 mm. 

 The sides are almost straight, except at the extreme base, where they broaden to meet the 

 branches. Their walls are filled with spicules arranged en c h e v r o n , the point of the chevron 

 being opposite the tentacular bases, which are themselves filled with spicules arranged e n 

 chevron, and surmounted by two bent horizontal spicules, one above the other, just below 

 the long opercular spindles. There are four or more of these latter to each tentacle, lying 

 along the tops of the incurved tentacles in a bundie, the lateral ones curved so as to embrace 

 the outer basal surface of the tentacle and meeting in a point distally. 



Spicules. The spicules are all typical spindles, usually slightly curved, and always 

 strongly tuberculate. 



Color. The entire colony is deep golden brown. 



This species differs from the type of the genus in having terminal polyps, and in the 

 spiculation of the operculum. 



4. Anthomuricea reticulata new species. (Plate II, figs. 3, 7> a \ Plate XIX, fig. 7). 



Stat. 50. Bay of Badjo, Flores. Up to 40 meters. Sand. 

 Strait of Boleng, Solor. 



Colony (dried specimen) strictly flabellate and reticulate, attaining a height of 75 cm., 

 and a diameter of So cm. The main stem arises from a broad expanded base and consists of 

 several agglomerated massive sterns which immecliately break up into a number of branches 

 of different sizes. Some of these pursue a tortuous course to the edge of the colony; but most 

 of them fork so that they themselves become broken up, the resulting branchlets often forking 

 several times before they reach the periphery of the colony. The ultimate twigs are born on 

 all sides of the branches, especially in the borders of the colony, so that there are numerous 

 twigs projecting from the front and back of the fan. The stem and basal parts of the branches, 

 where decorticated, show that the axis is deeply and irregularly furrowed with longitudinal 

 grooves. The main branches are compressed, the largest having a cross section of 13 mm. by 

 6.5 mm. The calyces are emplanted on all sides of the stem and branches, and are seldom 

 contiguous, as in many other large flabellate Muriceids, but are separated, on the average, by 

 about 1.3 mm. 



The individual calyces are in the form of short cylinders, a typical one being 1 mm. 

 high and having a diameter of 1.5 mm. The calyx walls are filled with uniform small, stout 

 spindles which are arranged en c h e v r o n on the upper parts, and have a circular disposition 

 on the lower parts of the walls. The collaret and operculum are very well developed, the latter 



