I 2 I 
3. Decametra parva (A. H. Clark). 
A. H. Clark. Ann. and Mag. Nat. Hist., scries 8, vol. 10, 191 2, p. 39 [I'romclra parva). 
Stat. 260. 5° 36.5 S., 132° 55.2 E. 90 Metres, i Ex. 
Stat. 315. Anchorage east of Sailus Besar, Paternoster Islands. Up to 36 fathoms. 2 Ex. 
The cirri are XIV, 14 — 15, 5.5 mm. long, and resemble those of D. minima; the si.xth 
or seventh and following segments are about as long as broad. 
The ten arms are 40 mm. long; the lower di.scoidal brachials are smooth, but those 
following have rather strongly everted distal ends. 
Pj is 2.3 mm. long with 11 segments; it tapers rather rapidly in the first four segments, 
more gradually from that point onward; the first segment is short, the second slightly longer, 
the third slightly broader than long, the fourth slightly longer than broad, the fifth and following 
about twice as long as' broad; P„ is from 3.5 mm. to 4.5 mm. long with 11. segments, evenly 
tapering, much larger and stouter than the other pinnules, though not greatly enlarged ; the 
first segment is short, the second half again as broad as long, the third slightly broader than 
long, the following gradually increasing to the seventh which, with the following, is twice as 
long as broad ; the pinnule is rather strongly prismatic, and the fourth and following segments 
have their distal edges produced at the prismatic angles into prominent short stout spines which 
increase in prominence distally. P3 is 1.5 mm. long, small and weak, with eight segments of 
whieh the distal are elongated. P^ is slightly smaller than P.. The distal pinnules are exceedingly 
slender, 4.0 mm. to 4.5 mm. long with 13 segments of which the second and third are slightly 
carinate and the outer are greatly elongated. 
The second specimen from Stat. 315 has the arms 35 mm. long and the cirri VII, 
14 — 15, 5.5 long; P, is not quite so much enlarged as in the one described. 
In addition to the three noticed above I have before me two specimens of this species 
from near J0I6, Philippine Islands, in 13 fathoms ("Albatross" Stat. 5557; Cat. X" 36022 
U.S. Xat. Mus.). 
4. Decametra minima (A. H. Clark). 
A. H. Clark. Ann. and Mag. Nat. Hist., series 8, vol. lO, 191 2, p. 38 [Prometra minima). 
Stat. 79a. 2° 38.55., 1 1 7° 46' E. (Borneo Bank). 54 Metres, i Ex. 
Stat. 117. i°o'.5 N., 122° 56' E. (Kwandang Bay entrance). 80 Metres. 24 Ex. 
Stat. 144. Anchorage north of Salomakiee (Damar) Island. 45 Metres, i Ex. 
Stat. 260. 5° 36.5 S., I32°55'.2E. Near Kei Islands. 90 Metres, i Ex. 
The centrodorsal is thin discoidal, the dorsal pole flat, finely papillose, i mm. in diameter. 
The cirri are X (rarely any other number), 10 — 12, 3 mm. to 4 mm. long; the first 
segment is short, the following increasing in length to the fifth or si.xth which, with the following, 
is about as long as broad; the second and following bear a finely serrate transverse ridge which 
becomes median in position after the fourth or fifth; it is low and very narrow, appearing as 
SIBOGA-EXPEPITIE y.\.\\b. '^ 
