56 
PEOBOSCINA. 
11. Proboscina parasitica (von Hagenow), 1851. 
Synonymy. 
Tubulipora paraiitica, von Hagenow, 1851. Bry. Maastr. Kr. p. 14, pi. i. fig. 1. 
,, ,, Staring, 1860. Bodem Nederl. vol. ii. p. 402. 
Diagnosis. 
Zoarium short and thick, and usually simple ; increasing rapidly 
in width. Surface corrugated. 
Zooecia long ; the distal ends are highly raised, and not crowded. 
Disteibijtion. 
England : 
Middle Chalk : Chatham. 
Foreign : 
Senonian — Maastrichter Kreide : Maastricht. 
Figtjees. 
PI. II. Fig. 7. A branched zoarium. Middle Chalk : Chatham. 
Fig. 7a, the whole zoarium seen from the side, nat. size; Fig. 75, 
the same specimen from above, X 8 dia. Vine Coll. D. 998. 
Affinities. 
The characters of the zooecia present a striking resemblance to 
those of the Fustulipora tuhulosa of von Hagenow ; hut the 
cylindrical, erect stem of the latter, with its solid axis, is sufficient 
distinction. 
Its nearest ally is P. elevata (Orb.), from which it differs by the 
freedom of the distal ends of the zooecia. The peristomes are 
distant instead of being packed into a dense mass. 
LIST OF SPECIMENS. 
D. 998. A small forked zoarium. Middle Chalk. Chatham. Vine Coll. 
Figd. PI. IT. Fig. 7. 
D. 527. A young zoarium encrusting a thin stem. Middle Chalk. Chatham. 
Gamble Coll. 
D. 3983. Two zoaria with slender zooecia and very tall peristomes (on slide). 
Middle Chalk. Chatham. Gamble Coll. 
D. 3984. A zoarium with larger zooecia (on slide). Middle Chalk. Chatham. 
Gamble Coll. • 
