174 
CEISINA. 
Disteibtjtion. 
Senonian — Maastrichtian : Bemelen, 
PlGlJEE. 
Fig. 12. Brancli from the side showing processes, X 6 dia. 
Maastrichter Kreide : Bemelen. Busk Coll. D. 6429. 
Fig. 12 . — Crisina (Tervia) g'lhhera, nov. 
Affinities. 
This species agrees in general characters with Tervia dorsata, but 
has a series of dorsal processes on the reverse side. Pergens 
figured a specimen with these processes (Revision, pi. xii. fig. 5), 
and there is another specimen in the Busk Coll. (D. 6429). 
Pergens figured only the reverse side of his specimen, so that 
its zooecial characters are not shown. As the specimen in tLe 
Busk Collection has fewer zooecia in the lateral series, and a more 
prominent Tervian series than T. dorsata, the form may he 
conveniently regarded as a distinct species. Dorsal processes also 
occur in Crisina gihlosa, as which the Busk specimen was 
identified; but the characters of the obverse surface are quite 
different. 
D. 6429. A branch (on slide). Maastrichter Kreide. Bemelen. Busk Coll. 
Figd. No. 12. 
4. Crisina (Tervia) gamblei, nov. 
Diagnosis. 
Zoarium small, of dichotomous branches, which are laterally 
much compressed. The reverse surface is narrow, and 
longitudinally marked. 
