1869.] BAILT IRISH GPvAPTOLITES. 161 



gonophores or generative buds of Graj)tolites (possibly of D. pristis), 

 and that they are analogous to those of the Sertularidae, as in Sertu- 

 laria faUa.v, pumila, &c.* 

 The foUowing are the species from this locality. 



^^^Diplograpsus pristis. 



— — mucronatus, prob. synonym. 



— — bicornis, Hall, with appendages 



at the proximal end as figured by 



Mr. Carruthers under the name of 



D. pristis. 

 Didymograpsus sextans. 

 *Cyrtograpsus gracilis {Hall). This 



pretty brandling species, not un- 



common at this locality , is easily 

 recognized from Hall's figure f, as 

 characterizing the Utica slate and 

 Hudson-Hiver groups : of the single 

 serrated forms, the remaining species 

 are 



G-raptolithus Hisingeri ( = Sagittarius). 



tenuis. 



About one mile and a half from this locality, and two miles south- 

 west of Broadford, in the same county, single-celled Graptolites only 

 were collected ; these I have referred to O. priodon. 



In the townland of Eilnacreagh, three miles east of Six-mile 

 Bridge, the species observed were Oraptoliihus priodon and tenuis, 

 vsdth a diverging form referred to Didyynograpsus Forchhammeri, the 

 accompanying fossils being of an Upper-Silurian type. 



At a few other places in the same county, and near to the last- 

 named locality, there are similar Graptolites associated with Upper- 

 Silurian fossils, as at the Townland of Glenagross, three miles and a 

 half E.S.E. of Six-mile Bridge, where GraptolitJius priodon is found 

 associated with Cardiola interrupta and a Crinoid allied to, if not 

 identical with, Actinocrinus pidcher, a Wenlock species. 



At Trough Cottage, Clare, 6 miles east of Six-mile Bridge, Grap- 

 tolithus priodon occurs associated with the same Crinoid. Half a mile 

 E. of the preceding locality, in the same townland, Grap)tolithus 

 priodon and G. tenuis were the species observed. 



In the adjoining county of Tipperary, Mr. A. B. Wynne (now of 

 the Geological Survey of India), whilst surveying the district, dis- 

 covered many fossil localities ; at several of them Graptolites occurred 

 associated with Upper- Silurian fossils, such as Euomplialus discors, 

 Cardiola Jibrosa and interupta, OrthoceraSj &c. Graptolithus priodon, 

 the characteristic Upper- Silurian species, and most abundant of the 

 single- celled forms, occurs at the following localities in this county, 

 viz. : — at Boosnafarney ; Cloncannon ; Big Park, near Latteragh ; 

 Knocknagoogh, S.E. of Latteragh, in profusion; N.W. of Barnane 

 House in an uncompressed state ; Garraugreena ; Gortnaskea ; Cur- 

 reeny common, &c. ; and, accompanied by Graptolithus tenuis and 

 Graptolithus Hisingei^ (^^r. Sagittarius^ at Beaghfadda. 



The pretty little branching species, Cyrtograpsu^ hamatus, Baily, 

 sp. J, was collected by Mr. Wynne at Garraugreena and Kilmacuddy, 

 in the same county. 



On Knockshigowna Hill, nine miles north-west of Boscrea, Tip- 



* Johnston's British Zoophytes, 2nd edition, p. 72, fig. 12, p. 73, pi. 11. 

 figs. 2-4. 



t Palseontology of New York, vol. i. pi. 74. fig. 6. 



J Journal of the Geol. Society of Dublin, vol. ix. pi. 4. fig. 6. 



