NO. 2225. NUCULITES FJ:(;:I TflL MAINE SILURIAN— WILLIAMS. 51 



It will be seen, also, that the calling of N. ladon, or any of the last 

 four named forms, a variety of N. corrugatus or a distinct species is a 

 matter of interpretation not of facts observed. For instance, in case 

 18 of the 23 specimens from this one faunule were of the form of N. 

 ladon and only one of them was like A", coirrugatus, common usage 

 would lead the paleontologist to decide that N. corrugatus is a variety 

 of N. ladon. And in case we had in evidence only a single specimen 

 of iV. corrugatus and N. ladon, there would be no question of their 

 specific distinctness. 



THE NUCULITES FROM THE SPLINTERY SHALES OF KELLEY POINT. 



In the same Leighton member of the Pembroke formation, but 

 above the Leighton Cove shales, there is a series of gray splintery 

 shales outcropping along the northeastern side of the Leighton penin- 

 sula on the western shore of Pennamaquam River, extending from 

 outside Leighton Point (at loc. 5.4.7 B) to West Pembroke and beyond. 

 Nuculites have been found in these splintery shales from several 

 locaUties (loc. No. 5.4.7 B, Kelley Point (5.3.2 A), West Pembroke 

 (1.45.6 A) and Oak Hill (1.43.9 A)). 



The following species come from these localities: 



No. 



790 C. 



M2922 

 2124 

 2125 

 2126 

 2127 

 1790 

 1791 



1790 

 1792 

 1798 

 1799 

 1790 

 1793 

 1794 

 1795 

 1797 

 1796 

 1787 

 1788 

 1789 

 1800 

 1801 

 1802 

 1803 

 2087 

 2087 

 2087 



2089. 



Name. 



Nuculites corrugatus . 



N. pholus 



do 



do 



N. ladon 



N. pelops 



do 



do 



N. eurylochus 



do 



do 



5.4.7 B. 

 5.4.7 B. 

 5.4.7 B. 

 5.4.7 B. 

 5.4.7 B. 

 5.3.2 A. 

 5.3.2 A. 

 5.3.2 A. 

 5.3.2 A. 

 5.3.2 A. 

 5.3.2 A. 

 -do I 5.3.2 A. 



Locality. 



N. galeus 



do 



do 



do 



do 



JV. ct. lentus.. 



N. ckrysippus. 



N. atreus 



N. thyestes 



N. galleus 



N. amyous 



iV. battus 



do 



N. cf. pholus.. 

 do 



N. galeus 



do 



N. pholus 



5.3.2 A.. 

 5.3.2 A.. 

 5.3.2 A.. 

 5.3.2 A.. 

 5.3.2 A.. 

 5.3.2 A.. 

 1.45.6 A. 

 1.45.6 A. 

 1.45.6 A. 

 1.43.9 A. 

 1.43.9 A. 

 1.43.9 A. 

 1.43.9 A. 

 1.43.9 A. 

 1.43.9 A. 

 1.43.9 A. 

 1.43.9 A. 

 1.43.9 A. 



Length. 



mm. 

 28 

 17 

 10 

 10 

 12 

 18 

 15§ 

 15i 

 14 

 134 



15 



21 



29 



24 



24 



26 



21 



22 



18i 



22 



27 



12 



184 



18 



19 



18 



26 



25i 



15' 



15 



9 

 11 



10 



74 



The great diversity of form presented by the Nuculites from these 

 splintery shales is evident from the fact that the attempt to classify 

 and describe the 31 specimens has resulted in assigning them to 12 

 distinct species. 



