'S56 Mr. K. Kiikpatrick on 



Oscules 3 niillim. in tliaiueter, level with surface, with tiiin 

 margins. Dermal membrane smooth, supported by a reticu- 

 lum of primary and secondary fibres. 



Skeleton formed of a square-meshed reticulum of horny 

 fibres, which latter may be clear or filled with sand-grains. 

 AVidth of meshes about 245 /x; width of fibres from 2-4 to 

 48 fM. 



Spi'cuhs. — Megascleres : oxea (rare and possibly foreign) 

 slender, straight, sharp-pointed, 120x2 /a. 



Microscleres : sigmata abundant, 30 to 50 fj, in length. 



Locality. W. of Tutanga, 30 fath. 



The specimens, which are of irregular shape, are growing 

 on fragments of SeriaiopoTay on branches of which they form 

 a thin semitransjiarent coating, but attaining some thickness 

 between the branches. 



The new species differs considerably from other species of 

 Chondropsis in its com))arative freedom from sand and other 

 foreign bodies ; but I can find no other position for it than 

 in the genus Chondropsis, Carter, as emended by Dendv 

 (9, p. 250). 



Pachychalina Jihrosaj llidley and Dendy. 



1887. rachychalina Jilrosa, Ridley and Dendy (20, p. 21, pi. iv. 



figs. 3,4). 

 18i8. Pachyckalinajibi'osa, Lindgren (15, p. 293, pi. xix figs. 6 a-e). 



The specimen is in the form of a small dried fragment 

 40 millim. in height, finger-shaped and expanded at the upper 

 end. The colour is pale yellow and the spinules 2 to 3 millim. 

 in height. 



The spicules are strongyles 114x3-5 [x, slightly curved. 



Had it not been for Lindgren's description of transition 

 forms in the spicules, which, in his specimens, include oxea, 

 tornota, and strongyla, I would have hesitated before placing 

 the specimen in the above species. Doubtless Pachychalina 

 spinosissima, Dendy, and Chalina spinifera, Carter, are very 

 nearly allied to the present species, but it is doubtful whether 

 they are identical. 



Locality, Funafuti Atoll. 



Distribution. Off Bahia ; Philippines; Funafuti Atoll; 

 Cochin China ; Java ; Christmas I. (?) ; Mergui (?). 



Lvffariella variabilis (Pol^jaefF). 



1884. Lvffaria variabilis, Polejaeff (17, p. 69, pi. ix. figs. 1-6). 

 1889. Luffaria variabilis, Lendenfeld (13, p. 387, pi. xxxiv. fig. o). 

 1899. Luffariella variabilis, Thiele (27, p. 25). 



