89 
Between the more distal pinnulars we get the type of the pinnular 
articulation, but without muscles, i. e. the same articulation as 
described above in the non-muscular articulations of the arm. The 
dorsal ligament is only inconsiderably represented by a small pit. 
No side or covering plates. 
As evidenced by sections through a proximal pinnule (fig. 18) 
the specimen is a female. There is an opening of the genital giand 
on the side of the pinnule near the 
distal end of the gonad. I have not , 
observed any sacculi. 
The arms and the disk do not ^ 
seem to contain fertile gonads, as far 
as I can judge from sections through 
pieces of the arms and the body-wall, 
the last mentioned pieces picked 
out from the vicinity of the bulbous 
swellings described below. 
Disk stretching to Br 10. The 
ventral face of the perisome provided 
with 5 bulbous thickenings, one to 
each arm; these swellings continue 
to Br 12. They seem to contain 
processes from the intestine only (cf. 
fig. 17). Anal cone long and narrow 
stretching to Br 16, with some few 
calcareous granules, otherwise as the 
disk naked. There are no orals visible. 
Occurence: The Kei Islands, Station 56. 5® 30'S. 132® 51‘E. 
345 Meters. Mud. ^®/5 1922. Coll. Th. Mortensen. One speci¬ 
men, the type, in the Zoological Museum of Copenhagen. 
? 
fe i i 
VT.! r. <■;..‘/b’ ^L. I 
Fig. 18. 
Porphyrocriniis uerrueosus. Trans- 
ver.se section through a pinnule 
from Br 10. d.c=dorsal coelom, 
V. c=ventral coelom, hy=hydro- 
coel, V. n.=ventral nerve, ^ = 
female genital giand (slightly 
shrunk), op=:its opening. Other¬ 
wise indications as in fig. 17, 
When considering the affinities of this new type one can first 
of all exelude the Hyoerinids, as the members of this family have 
short and discoidal joints throughout the whole stem, the columnals 
being connected with one another by means of synostotical artic¬ 
ulation. By the long joints, in the distal part of the stem connected 
by synarthry, the new type evidently approaches Bathycrinidæ and 
