552 
ACTINOPTEEYGII. 
25693, 25718. Lower pharyngeal and left upper pharyngeal, figured 
ibid. figs. 13, 11; Bracklesham. Diocon Coll. 
38821-23. Three abraded upper pharyngeal teeth, the first figured 
ibid. pi. X. fig. 23 ; Bracklesham. ^ BowerbanJc Coll. 
25694. Pragments; Bracklesham. Dixon Coll. 
P. 1772, P. 3970. Fragments; Bracklesham. 
Egerton ^ Enniskillen Colls. 
Genus PSEUDOSPH-SESRODOW, Noetling. 
[Abh. geol. Specialk. Preussen u. Thliring. Staaten, vol. vi. 
pt. iii. 1885, p. 102.] 
An extinct genus, possibly Labroid, known only by remains of 
the pharyngeal dentition. Pharyngeals hearing one or few large, 
rounded or irregularly ovoid, crushing teeth, which consist of coarse 
vasodentine invested with a thin layer of ganodentine. Upper 
pharyngeal bones separate. 
Pseudosphaerodon hilgendorfi, Hoetling. 
1885. Pseudosphcerodon hilgendorji, F. Noetling, he. cit. p. 104, pi. xi. 
figs. 1-8. 
Type. Pharyngeal teeth; Prussian Geological Survey, Berlin. 
The type species, known only by irregularly ovoid, sometimes 
nearly triangular teeth, which are smooth and tumid, often slightly 
jfiicated at the sides. 
Form. Log. Middle Eocene: Samland,Prussia; Hampshire Basin. 
P. 3752. Bight upper pharyngeal, bearing one tooth ; Bracklesham 
Beds, Bracklesham, Sussex. Enniskillen Coll. 
30888. Large worn tooth, measuring 0’038 in longest diameter, and 
showing successional tooth directly beneath it; Bramshaw, 
Wiltshire. Purchased, 1856. 
The following indeterminable specimen is supposed to represent 
an extinct genus and species of this family :— 
P. 626. Fragment of hinder portion of cranium labelled by Agassiz 
as intended to be the type specimen of Auchenilabrus 
frontalis, recorded by name only in Bep. Brit. Assoc. 
1844 (1845), p. 308 ; London Clay, Sheppey. 
Egerton Coll. 
