154 
colony. — With the exception of the first 3 cm. the entire colony is covered with polyps. 
Usually they are inserted in a single series, but this series is very irregular (fig. 207), so that 
Fig. 206. Eucirripathes nana v. Pesch. Spines: 
a on the base of the colony; b on a higher 
part; «, b 58.5 X- 
Fig. 207. Eucirripathes nana v. Pesch. 
Polyps; 12.5 X- 
it approaches the Eucirripathes- type. The young polyps, distributed between the adult ones, are 
sometimes so very much laterally shifted as to lie next to the adult polyp on the axis, instead 
of behind each other. For this reason I consider this specimen as a young colony of Eucirri¬ 
pathes ; the microscopical anatomy supports this opinion. — On some parts of the colony 
the tentacles are contracted, knob-shaped (fig. 208) and very 
much wrinkled; their apex is brown and the base of the tentacle 
is lighter coloured. The mouth is a transversally elongated slit; 
„ the sagittal tentacles are 0.7s mm. long, the lateral ones 0.6 mm. 
Fig. 208. Eucirripathes nana v. Pesch. o ^ ° 
Polyps on the top-part of the colony; or subequal to the sagittal tentacles. The height of the oral cone 
12 ^ • m ' 1 ' • • • 
is 0.4 mm.; its diameter 0.45 mm. The interpolypar distance is 
0.9 mm. Some polyps have their proximal lateral tentacles more developed than their distal 
lateral ones. I can see no cross-grooves between the polyps. 
Diagnosis: 
Colony: unbranched, sinuous or partly spiral, without swellings of the 
axis; blunt apex with a very thin axial canal; diameter increases at first and 
is for the rest subequal. 
Spines : acute or blunt conical with slightly granulated top; different 
length on opposite sides of the axis: 135 p. and 80 p.; mutual distance ±455 p.; 
5 irregular longitudinal rows; base of the colony smooth. 
Polyps: in irregular rows; tentacles long or knobshaped; high oral cone 
with transversally elongated mouth; sagittal tentacles 0.75 mm. long, lateral 
ones 0.6— 0.75 mm.; sometimes predominating proximal lateral tentacles. — 
Interpolypar distance 0.9 mm. 
3. Eucirripathes translucens v. Pesch. 
Cirripatlies translucens v. P. VAN PESCH. Bijdr. tot de kennis v. h. genus Cirripathes, p. 15. 
Stat. 274. 5 0 28 .2 S., 134 0 5 3'.9 E. Near Aru-islands. 57 M. Sand and shells, stones. 1 spec. 
This colony is attached to a stone by means of a large, irregular basal plate, black and 
following every irregularity of the underground. — The length is 27 cm.; the axis is irre¬ 
gularly curved, except the first 9 cm. which are straight and upright. The basal diameter of 
