NO. 3 DEICHMANN: HOLOTHURIOIDEA ; PART I, DENDROCHIROTA 83 



ring in the Strait of Magellan, and since then it was concluded that the 

 locality Celebes was wrong. Very likely salmini from Celebes is a syno- 

 nym of leonina from Singapore but different from the species from Peru 

 and Chile. 



4. Cucumaria crax, new species 

 Plate 10, Figs. 1-5 



Diagnosis. — Small form (?). Skin soft, smooth; feet large, soft, 

 completely retractile, arranged in 5 bands, apparently not present in 

 the interambulacra. Tentacles soft, bushy, of equal size. Calcareous ring 

 low, simple, strongly undulated posteriorly ; radials deeply incised ; a 

 single stone canal attached in the dorsal mesentery, 2 ventral Polian 

 vesicles. Retractors short, fleshy, gonads attached near the middle of the 

 body. Spicules, a scattered layer of small biscuit-shaped bodies, usually 

 with 4-8 marginal holes, frequently incompletely closed, and knobbed 

 margin. Feet with rudimentary end plate and short 3-armed supporting 

 rods. Introvert and tentacles, respectively, with buttons and numerous 

 narrow rods with perforated ends, large in the stem, small and almost 

 hair fine in the ends of the tentacles. Color mottled brown with paler 

 ambulacra; tentacles black. 



Type. — Holotype, AHF no. 23, 6 paratypes. 



Type locality. — Station 283-34, Thurloe Point, Thurloe Bay, west 

 coast of L. Calif., 8-10 fms., March 9, 1934. 



Distribution. — Known from the type locality. 



Depth. — From 8-10 fms. 



Specimens examined. — The type and 6 paratypes. 



Remarks. — The type measures 1.5 cm. in length and is strongly con- 

 tracted. The gonads are well developed, but this fact in itself constitutes 

 no clue to the size which the species may attain when full grown. 



Superficially it resembles a small specimen of C. calif ornica Semper, 

 but the spicules are entirely different. If the spicules disappear completely 

 as the animals grow larger, it may become impossible to distinguish be- 

 tween the two forms. 



5. Cucumaria godeflfroyi Semper 



Cucumaria godeffroyi Semper, 1868, p. 53, pi. 15, figs. 12, 14. — Lam- 

 pert, 1885, p. 144.— Theel, 1886, p. 99.— Clark, 1910, p. 352. 



