REPORT ON THE FORAMINIFERA. 
77 
The foregoing Synopsis has been made as nearly complete as circumstances admit, and 
most of the generic terms not included in it will be found as synonyms in tlie 
descriptive portions of the Report, and may be referred to by means of the Index at tlie 
end of the volume. There are, however, a few genera based for the most part upon 
obscure fossil species — such as, for example, the Renulina of Blake, Annulina, Terquem, 
Calcisphcera, Dawson, and Ccelotrochium, Schltiter — which have been omitted for want 
of sufficient knowledge of their salient characters to determine their zoological position ; 
and in the same category may be placed the large fossil organisms of which Recepta- 
culites is a type, concerning whose affinities too little has as yet been accurately 
ascertained to warrant their recognition as a well-established family of Rhizopods. 
Of even more interest, perhaps, is the group of recent Protozoa, named by Mr. 
Carter, Testamoebiformia (“ Ann. and Mag. Nat. Hist.,” 1880, ser. 5, vol. v. p. 446, 
pi. 18, 19), and placed by him amongst Foraminifera. It includes a number of adherent 
testaceous Rhizopoda taking the general form of Amoeba , — that is to say, with irregular, 
lobed, or branched extensions of the periphery. Of these Mr. Carter has described three 
generic types, namely — Holocladina, in which the test is calcareous and branched, and 
has a pustuliferous or papillate surface, each projection with a puncture in the centre ; 
Cysteodictyina, which is calcareous, sessile, blister-like with interstices (not branched), and 
has a uniformly punctate surface ; and Ceratestina, which is chitinous and polythalamous, 
the chambers being developed upon a filamentous stolouiferous tube. The most careful 
study of the descriptions and figures furnished by the author has not enabled me to 
assign a place to this singular group of parasitic fornVs, and it seems better to await 
the results of further research than to treat it even provisionally on our present know- 
ledge. As yet, only the tests are known, and it appears possible, if not probable, that 
the resemblance to Amoeba may not stop at external contour, but may apply equally to 
the sarcode-body, and that they may belong to the Lobose rather than the Reticularian 
section of Rhizopoda. 
(ZOOL. CHA.LL. EXP. PiRT XXII. — 1883.) 
Y 11 
