NO. 3 DEICHMANN : HOLOTHURIOIDEA ; PART I, DENDROCHIROTA 95 



1 . Leptopentacta nova, new species 

 Plate 14, Figs. 13-22; text figure 3 



Diagnosis. — Body slender, slightly curved with rigid body wall. Feet 

 few, contracted into conical protuberances, well spaced. The ventral am- 

 bulacra possess from 8-10 feet, while the dorsal ones each have 4 feet 

 anteriorly and one or two posteriorly. Skin with large cobblestone-like 

 scales, and the space between them filled with masses of smaller spicules. 

 Tentacles fingerlike (in the type which measures 2 cm. in length) and 

 apparently only 8 are present, but the 2 small ones may have been over- 

 looked. Calcareous ring low, with no indication of posterior prolonga- 

 tions. Inner anatomy not remarkable in any respect. 



Spicules large scales or grains with reticulated structure, 4-holed but- 

 tons, irregular, swollen or with irregular knobs, and minute perforated 

 biscuit-shaped plates with 4-5 holes and frequently a long spine developed 

 on one side. Feet with no supporting plates and apparently no end plate. 

 Introvert with reticulated plates which intergrade into rosettes; tenta- 

 cles with curved perforated or branching rods which decrease in size 

 toward the ends. 



Type. — Holotype, AHF no. 26, 1 paratype. 



Type locality. — Station 281-34, Santa Maria Bay, west of Hughes 

 Point, L. Calif., 35-40 fms. 



Text fig. 3. Leptopentacta nova, new species. 

 Scale, 1 mm. 



