1 36 Proceedings of the Royal Irish Academy. 



15. A. palliata Boh. 



1. Helga, RT. Hi. 1. LXXXVI1I. July 8, 1901. D. Dredge. 40 miles 

 W.N.W. of Cleggan Head. 78 fathoms. specimens. 



2. SR. 185. Jan. 30, 1905. 70 miles S.W. of Fastnet. Lat. N. 50° 20'; 

 Long. W. 10° 20'. 82i fathoms. Dredge. 1 specimen. 



3. XL! Yd. Bofin. July 5, 1899. Off mouth of Bonn Harbour. 

 20 fathoms. 1 specimen. 



1. SR. 178. Nov. 16, 1904. Dredge. 74.1 fathoms. 3 specimens (and 

 1 J richardi). 40 miles N.W. by W. ,' W. of Cleggan Head. Lat. 



X. 53 36' 30"; Long. W. il 15' 30". 



Sub-family CHONDRACTINIINAE Baddon. 



■ Sagartiidae with only six pairs of perfect mesenteries, which alone of 

 the well-developed mesenteries an- sterile; two gonidial grooves and two 

 pairs Hi' directives; body-wall usually thick, with a cuticle, and often nodu- 

 lated: cinclides absei ontia rarely emitted, and then by the mouth 

 only; strong mesogloeal sphinctei muscle." I lladdon, 189S, p. 458.) Rarely 

 .i few mure mesenteries than the six primary pairs are perfect. 



Chondrodactis Wassilieff. 



Chondractiniinae with tou^li cartilaginous body-wall, variable in different 



cies, but which may be very thick; it may bear irregularly arranged 



rounded or pointed tubercles. No cuticle (invariably .'). If there is any 



division of the column into scapus and capitulum, it is indistinct; the 



pitulum" may h gular ridges. The oral disc may be entire or 



bilobed, with the two lobes curled inwards al the edges, and folded up 



qsI each other. There are never more than two cycles of tentacles 

 present, and these are at the extreme margin of the oral disc, and .ill com- 

 municate : less with the margin by means of thickenings of meso^lntM 

 .mi their aboral Sis pairs of mesenteries or a few more perfect, with 

 more or less diffuse retractors. Longitudinal musculature of tentacles 

 ennal, radial musculature "i oral disc sometimes meso-ectodermal. 



This genus ted by Wassiliefl 57 Japanese pi 



I find in the present collection tin ies which undoubtedly belong 



to the same genus, but which cannot be referred to any of the hitherto 

 described 



L6. C. coccinea, n. sp. 

 . XVI, tigs. 22-20 md 41 ; PI. XVIII, s, <), 11, 12, 17. 18.) 



SB L88. Feb. :;, 1005. 50 miles W. f N. of Tearaght Light. Lai. N. 

 \V 11 59'. 1 specimen. 



