PROTOZOA. 
677 
servations (ibid. p. 138) on the same species, he suggests that probably JE. 
cummer of Owen is but a shorter, broader, and more erect specimen of E. 
speciosa, the curved form of which latter species may have been produced by 
the crab that inhabits it. 
For a description and anatomical account of the contractile tissue in sponges 
see Lieberkiihn’s paper (I. c .) ; appended to this paper there are also some 
observations on the development of a SpongiUa. 
H. J. Clauk’s paper on the animality of the Ciliate Sponges and on their 
affinities with the flagellate Infusoria is reprinted in the Ann. & Mag. Nat. 
Hist. vol. xix. 1867, pp. 13-18 {vide ^ Record ’ for 1866, p. 644). 
III. RHIZOPODA. 
New genera and species : — 
Dr. Strethill Wright describes a new genus and species of Rhizopod 
(/. c. p. 336, plate 16) met with in the sea in the neighbourhood of Inch- 
heith. The animal consists of a simjde mass of brown or orange sarcode, 
onclosod in a very delicate and colourless membranous envelope, from open- 
ings in which it protrudes long pseudopodial branches, generally three or 
four in number, but sometimes, especially in larger specimens, more numerous. 
In many specimens a single large transparent nucleus is seen, but in others 
three or four appeared grouped together. These animals were from one- 
sixteenth to one-quarter of an inch in length. This Rhizopod is described 
under the name Boderia turneri ; its reproduction is described as follows : — 
The large transparent nuclei, or ova, were seen to disappear ; some hours af- 
terwards the sarcode of the animal burst through its envelope and spread 
itself in ragged masses, connected by thick processes. A little later the sar- 
code became entirely dissipated, leaving a swarm of naviculoid bodies, from 
each of which in a day or two issued a minute nucleated amoeboid mass j these 
existed for weeks as a closely aggregated band near the surface of the water, 
without assuming an envelope or putting forth pseudopodia. 
Dr. Strethill Wright regards the so-called nucleus as a true ovum. 
W. Archer describes a new species of Dijfflvgia, D. carinata, related to, 
but distinct from, D. triangulata. He also describes as a new genus, with 
affinities to Psmdodifflugia (Schlumberger), AniphUrema, in which at each 
opposite extremity of the test there was a distinct rather wide aperture, fur- 
nished with a short well-marked neck ; from each of these opposite apertures 
there issues a dense compact tuft of slender filiform occasionally branched 
pseudopodia. Quart. Journ. Micr. Sci. vol. xv. pp. 174-178. 
Raphidiophrys, gen. nov.. Archer. Body with very numerous slender, 
elongate, pellucid spicules ; in the central portion of the body, one or several 
hollow globular clusters of chlorophyll-granules ,• pseudopods numerous, very 
long, and slender. R. viridis, sp. n., co. Wicklow, Ireland, Archer, Quart. 
Journ. Mic. Sci. vol. xv. p. 178. 
Clathrulina is the name proposed for a new Actinophryan genus by Cien- 
kowski (/. c. p. 311). This new form was met with first in St. Petersburg, and 
more recently in Dresden. It consists of a pear-shaped or globular lattice- 
work ; skeleton supported on a long stiff stem ; the openings in the latticework 
are round or many-cornered, and from these protrude the pseudopodia. 
C. elegansj sp. n., Cienkowski, Petersburg, Dresden. 
1867. [vol. IV.] 2 Y 
