520 MR. p. H. CABPENTER ON NEW 



smaller and less distinct than on the anterior arms, and do not 

 extend on to the pinnules. Some of these hinder arms consist of 

 less than fifty joints, while in the anterior arms there are more 

 than a hundred. The terminal ungrooved pinnules of the former 

 are also thicker and more clothed with perisome than those at 

 the same distance from the calyx on the anterior arms. But I 

 can find no trace in any of them of any of the ovoid bodies which 

 I have observed in some of the Philipjnne specimens *, and in a 

 few other .species f. 



4, ACTINOMETEA GRAXDTCALTX, U. sp. 



Description of ari Individual. — Centrodorsal large and hemi- 

 spherical, 10 mm. wide, with the dorsal pole free from cirri and 

 somewhat hollowed. About 50 cirri of 23-26 moderately stout 

 joints, the fourth of which is about square, and the Sth-lOth the 

 longest. The following ones decrease in size, and the terminal 

 joints develop blunt dorsal tubercles, that on the penultimate 

 being the most distinct. 



Second radials partially concealed ; axillaries relatively long, 

 almost triangular, with sharp distal angles. 



47-1- arms, some of tbe rays dividing four times. The first and 

 third divisions each of three joints, the axillaiy with a syzygy ; 

 the second division of two joints, the axillary without a syzygy. 

 The first joints after each axillary closely united laterally, and 

 bluntly wedge-shaped, the outer sides being the longer. Second 

 brachials somewhat shorter and more oblong than the first. The 

 third (syzygy) and the next three or four joints also nearly oblong ; 

 the following ones overlapping and rather sharply wedge- 

 shaped, nearly twice as wide as long, becoming shorter and 

 blunter after about the 30th joint. 



First syzygium on the third brachial and the next from 13-20 ; 

 then an interval of 3-9, usually 3 or 4, joints between successive 

 syzygia. 



The first pinnule (borne by the second distichal) slender, ex- 

 cept just at the base, and very long, reaching almost 25 mm. 

 The next one on the second joint of the tertiary arm (when 

 present) is somewhat shorter, and that on the second brachial 

 more so, though still more than 15 mm. long. This pinnule is 

 longer when there are no tertiary arms. 



The following ones decrease to those of the 7th and 8th joints, 



* Trans. Linn. Soc. 2nd ser. Zool. vol. ii. p. 40, pi. ii. fig. 6. 

 t Bull. Mus. Comp. Zool. vol. ix. no. 4, pp. 11, 12. 



