ILLUSTRATIONS OF THE FAUNA OF THE ST. JOHN GEOUr. 97 



CLONOaRAPTUS, Hall. 



Clonograptus (?) spiNOSUS, n. sp. (PI. VII., figs. 2 a aud b) 



Nat. Hist. Soc. of N.B., Bulletin x., p. vi. 



A slender species with distant hydrotheca?, set very obliquely to the axis, and having 

 a spine at the enter end of each hydrotheca. The branches of the hydrosoma are about 

 three-quarters of a millimetre wide, and there are aboïit eight hydrothecse in the space of 

 ten millimetres. 



Horizon and Locality. In the soft black shales of Div. Zb at Navy Island. 



This species is easily distinguished from Diclyonema jiabeUiforme with which it is found 

 by its larger and more distant hydrothecse. 



The species resembles Dichograptvs (?) tenellus, Liurs. and is from the same horizon ; 

 it also has the same ntimber of hydrotheca in a corresponding space on the branch of the 

 hydrosoma. Linnarsson does not show any axis or vergula in the branch he figvires, but 

 this is distinctly present in the St. John species ; his species also has narrower branches. 

 Our examples of the new species are quite too fragmentary to make the reference to Clono- 

 graptus certain, but D. tenellus is referred to Clonograptus by O. Hermann,' and Linnarsson 

 appears to have been doubtful of its generic position. 



ClonoCtEAPTUs flexilis, Hall, var. 

 Graptolithus flexilis, Hall, Can. Org. Rem. Dec. ii., p. 103, PI. x. 



This species is well indicated by the proximal and distal parts of the hydrosoma. 

 The foi'mer are more slender than in the type and the distal parts also are narrower. 



Horizon and Locality. In the black shales of Div. Sd at the Su.spension Bridge. 



Dr. Ami's note on this species is as follows : " The four specimens referred to this 

 species are undoubted examples of the genus Clonograptus, and when compared with the 

 types and representatives of the above species from Point Levis the specimens from the 

 exposures at the Suspension Bridge, St. John, are more slender and delicate. Three of the 

 latter show indications of the original sicula to be present, partially or nearly entirely ab- 

 sorbed in the funicle. This form may possibly be a variety of Clonograptus flexilis. Hall." 



DICHOGRAPTOS, Salter. 



DiCHOGRAPTUS LOGANI, Hall. 

 GraptoliUm.t Logani, Hall, Can. Org. Rem. Dec. ii., p. 100, PI. ix. & xi. 



The remains of this species are quite abundant in some layers of the graptolite shales. 

 The proximate branches are very slender and wiry, and the branches more delicate than 

 in examples from Quebec. 



Horizon and Locality. Same as the preceding. 



The following is Dr. Ami's note on this species : "The four specimens referred to the 

 above species are very much broken up, and the stipes occur in a tangled condition, 

 whilst two specimens appear to show indications of the presence of the central disc from 

 which the stipes radiated. It would thus appear that Loganograptus Logani, Hall, does 



' Geological Magazine, New Series, Dec iii-, vol. iii., p. 25. 



Sec. IV., 1892. 13. 



