NO, 3 deichmann: holothurioidea; part i, dendrochirota 133 



tooth which often pierces the skin 



1. Phyllophorus aculeatus Ludwig 



1. Spicules tables with oval disk with 4 large and 4 smaller holes, 

 the latter often wedge shaped ; spire usually with 2 pillars and 

 ending in 2 tufts of few spines, sometimes ending in 4 spines. 

 Feet with large end plate and a few supporting tables with 

 broad elongate disk with numerous holes and comparatively 

 low spire with a single crossbeam and ending in 2 diverging 



spines or horns, rarely in a single point 



2. Phyllophorus zacae Deichmann 



1. Phyllophorus aculeatus Ludwig 

 Plate 25, Figs. 1-8 



Phyllophorus aculeatus Ludwig, 1894, p. 128, pi. 13, figs. 6-11. — Deich- 

 mann, 1938, p. 381 (passim). 



Diagnosis. — Medium-sized form (type measured 6.5 cm. but was 

 strongly contracted). Feet numerous, scattered almost uniformly over 

 the body. Tentacles of varjn'ng size, up to 20 in number. Calcareous ring 

 with long posterior prolongations on the radials ; interradials with heart- 

 shaped to almost rhomboid base and long anterior tooth; the basal part 

 overlaps the radials. 



Spicules numerous tables with oval disk with a varying number of 

 marginal holes, usually 8 ; spire mostly with 4 pillars, a single crossbeam, 

 and a wreath of small spines on the top. Feet with large end plate and 

 heavy supporting tables with broad oval disk with numerous holes and an 

 enormous spire which tapers into a conical tooth. Introvert with tables 

 with oval, lacelike disk and spire composed of 2 to 4 pillars. Tentacles 

 with a few rosettes and numerous delicate rods, rarely with the ends per- 

 forated. Color grayish with purplish tentacles. 



T>^/.e.— U.S.N.M. 



Type locality. — Gulf of Panama, shore. 



Distribution. — Known from the type locality only. 



Depth. — Shallow water. 



Specimens examined. — The type, the only specimen known in exist- 

 ence in any collection. 



Remarks. — The strongly contracted type measured probably more 

 than 10 cm. in length in expanded condition. The inner organs are strong- 

 ly distorted, and very little can be said about them. The gonads are well 

 developed, forming long tubes, dichotomously divided near the base. 



