APPENDIX—HYALINIA CELLARIA. 459 
as wtramarine-ash, the epidermic cells are also said to be more opaque 
than in cel/aria, and more symmetrical in their distribution, while brown 
or black-branched pigmentary bodies are not present. 
Fic. 526. Fic. 527. Fic. 528. 
Fic. 526.—Proximal portion of the genitalia of //yadinia hibernica Kennard and Bowell (after Bowell). 
Fic. 527.—Buccal bulb of /7. Aibernica (Kennard and Bowell), showing-the cesophagus, radula-sac, 
and retractor. 
Fic. 528.—Buccal bulb of /7. ce?/avia (Miiller), showing the cesophagus, radula-sac, and retractor. 
He is also responsible for the dissections of the animal, and remarks on 
the stronger build of the organs generally compared with //. cellaria; the 
spermatheca is described as being flat and spoon-shaped, very different 
from the globose spermatheca of //. cellaria, a state, however, probably 
due to the vesicle being empty at the time of examination ; the duet is 
also stated to be twisted and longer; while the penis, epiphallus, and 
the dilatation of the vas deferens are large and distinct, and he regards 
the organs generally as more suggestive of /Z. lucida than //. cellaria, 
but admits the great variation due to the physiological age and condition 
of the individual. 
Fic. 530. 
Fic. 529.—Half a transverse row of the radula of //. /ébernica K. & B., highly magnified (after Bowell). 
Fic. 530.—Half a transverse row of the radula of //. ce//arva Miiller, highly magnified (after Bowell). 
The radula of Aibernica, though occasionally approximating to that of 
typical cedlaria, is yet said to be readily distinguishable therefrom by the 
greater thickness and prominence of the outer and central teeth, which 
are consistently more compact and oblong. 
Geological Distribution.—In a fossil state it is recorded by Mr. 
A. 8. Kennard from Drumceliffe Crannoge, and Clanreen Crannoge, in co. 
Clare, collected by Miss Parkinson; and from a rainwash at Dog’s Cave, 
unis, in the same county, by Mr. R. Welch. 
Geographical Distribution.—Mr. A.8. Kennard cites the following 
localities for this form, and others have been reported from time to time 
by various collectors, 
