8g 
11. Nephthya striata Kiikenthal. 
For description see: KUKENTHAL, Versuch einer Revision der Alcyonarien, II, Nephthyiden, 
(I), Zool. Jahrb. XIX, 1904, p. 166, 2 figs. 
Stat. 115. Kvvandang Bay. Reef. 1 Ex. 
A very light brown tree-like colony, 7 cm. high, from Station 115. The rigid basal 
stem, 2.5 cm. broad, shows numerous striations, and is cleft very near the base into numerous 
branches which he closely appressed. The lappets are rounded and flattish, 5—6 mm. broad and 
about 4 mm. high, and bear very closely set small polyps which have a height of about 0.6 mm. 
and a breadth of 0.5—0.6 mm. The armature of the polyp shows an irregular arrangement of 
very thorny spindles, without very definite chevrons; and on the inner side are found rather 
smooth rods with very slight thorns. The supporting bundle ensheaths the dorsal side of the 
polyp and very occasionally projects slightly. 
The spiculation also agrees very well with Kukenthal’s description, including ( a) long 
strong spindles covered with compound or simple warts, often showing one long pointed thorn 
or branch, ( b ) smaller very warty spindles, sometimes with the warts more heavily developed 
on one side; ( c ) more compact irregular forms. 
Previously recorded from Red Sea. 
12. Nephthya tenuis (Kiikenthal). (Plate XXVII, Fig. 2). 
For description see: KUKENTHAL, Alcyonaceen von Ternate, Abh. Senckenb. naturf. Ges. 
Frankfurt, XXIII, 1896, p. 103. 
-Versuch einer Revision der Nephthyiden, II, 1904, p. 533. 
Stat. 301. io°38 / S., I23°25 / .2E. 22 M. Mud, coral and Lithothamnion. 1 Ex. 
We refer to the above species a limp cream-coloured colony from Station 301. Described 
originally by Kukenthal as a separate species, Spongodes tenuis , it was merged by him later 
with Dendronepiithya robusta (Ktik.) being considered as a young specimen of that species. From 
his original description and figures of S. tenuis , however, we feel convinced that his specimen 
was a true Nephthya; and as our colony agrees with the details of the description of S. tenuis 
rather than that of S', robusta Kukenthal, we have revived S. tenuis , transferring it to the genus 
Nephthya. 
From a flaccid sterile stalk 2.5 cm. long there arise three main branches with an average 
length of 3.5 cm. These give oft' secondary branches which bear the elongated, digitiform 
lappets. The polyps occur irregularly all over their surface. 
There is a well defined supporting bundle with one or two dominant median spindles, 
projecting not more than about 0.2 mm. beyond the polyp-head, which is borne almost at 
right angles to the stalk. The latter is about 1.4 mm. long. The polyp shows a dorsal and 
lateral armature of about four pairs of spicules in chevron, and ventrally a mass of small smooth 
rodlets, about 0.08 mm. long, which are also found on the inner side of the polyp stalk. The 
spicules of the upper stem cortex are warty spindles of varied lengths up to 1.2 mm. In the 
lower stem cortex there are warty spindles; also shorter spindles, often with strong, median, 
jagged thorns arising on one side, and numerous small very irregular bodies. The canal walls 
SIBOG A-EXPEDITIE XIII d. 
12 
