oe | 123 
B. i apa yi Laphami, O. Scammon "0. Hoyt O. lineola- 
tum, O.cameolare, O. irregulare, O. a Hatha O. strielineatum, an 
Excalyptocrins armosus. The last mentioned species is also illustrated 
The aA of these fossils, although i in most cases rather big are 
general sufficient for the preliminary i indi 
names for his species, ponent r, the Pe) r has iam in sci cases 
oul 8 (Min. Conch., 3d, p. 39), which was referred to the 
i genus Mote in 1843. The same name (dicarinata) was also 
pplied to another species of this genus by Koninck in 1843, (Ap. 
Doma Pree. cae Geol. p. 517) and bb in another by Munster (Gold 
Petrefact, 3d, 72.) The name Ort ineolatum, was used by 
Phillips j in 1841, (Pal. Foss., p. 111). Aaiie Fe specific name irregulare 
was used by Munster for an Geibvcerhe | in 1840 (Bietra. zur Petref. 3, p. 
100). This 9 applies also to our author’s former paper (Ne 
Paleozoic goer aoe c.). For instance the name Leda gibbosa and L. 
ita, had both been preoccupied by Sowerby for recent species; and 
Nucula cylindrica was used by McCoy for a Carboniferous species i in 
1844 aps Foss. Ireland, p. 69). 
Several of the species described in these papers. gage to’ us very 
closely allied to old and well known (Siam. though itis but reason nable 
to infer that the author’s means of judging in regard to their difference 
or identity should ra more reliable than an opinion formed from mer ely 
‘Teading his description 
date here De is not that at which this paper was published, but the “- 
* The 
at which the hich it ts to have been extracted was read 
“the Chi ad my. | ‘The cape fenate Si aed ane on the 16th of Feb, 
cago em co 
ly which is sie pote. it was received elsewhere. We men 
fact in order to call the i a of authors to the importance of giving the — of 
; bie é well as that at which their papers were presented, wh 
tributed in advance of the regular — of the proceedings or transactions of the body 
before which the te read; for it must be borne in mind that it is not ns the date 
OF presentation, but to that of saleal 6 (i. e., general distribution 
laborers in the department of science upon which ts) that we must go 
cases of disputed ity. We used for pars to be, 8 frequently this 
important point of fect har oir ae there still apps to be, aft bog t 
