SUPPLEMENTARY APPENDIX. 



123 



REMOPLEuiiinr;s, Portl. p. llö. 

 Colbii, Portl. 

 dorso-spinifcr, Portl. 

 lateri-spinifcr, Portl. 

 longi-capitatus, Portl. 

 longi-costatus, Portl. 



Trinucleu.s, Lhwyd. 



? Asaphoides, Murch. Sec remarks, p. 58. 

 Caractaci, Murch. Ibid. p. öö 



TuiXUCLEUS 



elongatus, Portl. 



fimbriatus, Murch. Ibid. ]). .5". 



latus Portl. 



Lloydii, Murcli. T. granuiatus, p. .57. 



nudus, Murcli. an Am/ii/i-. (uote, p. 57). 



'! punctatus, Murch. 



radiatus, Murch. Trinuclcus ornatus, p. 



seticoriiis, Portl. p. 58. 



58. 



II. To the above List of British Trilobites must be added tliosc species described since 

 the publication of Mr. Morris's Catalogue, and wliicii have not come under the inspection of 

 Professor Burmeister. 



In Mr. M'Coy's ' Synopsis of tlic Carboniferous Fossils of Ireland,' the following new 

 species are described and figured : ■" 



Griffithldes calcaratus. 

 Phillipsia coelata. 

 Phillipsia Colei. 



Phillipsia (?) discors. 

 Phillipsia mucronata. 

 Phillipsia quadriserialis 



In Mr. M'Coy's ' Synopsis of the Silurian Fossils of Ireland,' collected by Mr. Griffith 

 (Dublin, 1846), the following new genera and species are described and figured : 



TiRESiAS. New genus. " Cephalo-thorax semioval, longitudinal ; glabella very gibbous, 

 pyriform, rounded in front, contracted into a narrow neck posteriorly (obscure traces of two 

 small cephalo-thoracic furrows on each side) ; neck furrow very strong; cheeks triangular, 

 gibbous, prolonged backwards into long flattened spines; eyes none?" 



" This remarkable Trilobite agrees nearly in form with the carboniferous genus 

 Griffithides, Portl., except in being apparently Wind." (Loc. cit. p. 43.) One species, 

 T. imculptus, in the limestone of the Chair of Kildare. 



FoRBESiA. New genus. [From the description and figures this genus would appear 

 to be synonymous with Proetus.] F. latifrom. 



PoRTLOCKiA. New gcnus. Cephalo-thorax truncato-orbicular, lateral angles not 

 produced into spines ; glabella large, clavate, widest in front, reaching to the margin, 

 contracting to a narrow neck behind ; neck fuiTow strong ; cheeks rather small, triangular, 

 convex ; eyes large, reniform ; abdomen of thirteen segments, rounded at their extremities, 

 anterior margin sharpened for contraction ; pygidium semi-elliptical, of seven simple 

 segments ; margin entire, smooth. 



The genus includes CuJymene fubercuhtla and C. marroj)IifIiahiia of the Silurian S3'stem ; 

 Fhacops tuhercuJaia of Captain Portlock's report ; Calymene nvpera, Hall ; Calymene hufo. 

 Green, &c. 



* In the same work are described and figured the following allied Crustacea from the cai'bouifcrous 

 limestone of Ireland : Dithyrocaris (Scoular) Scouleri ; Entomoconchus (new genus, M'Coy) Scouleri ; 

 Cytherina Phillipsiana of De Koninck; Daphnia primjEva; Bairdia (new genus, M'Coy) curtus. 



B. gracilis ; Cythere amygdalina, C. arcuata, C. bituberculata, 0. costata, C. cornuta, C. elongata, 



C. excavata, C. gibberula, C. Hibbertii, C. impressa, C. inflata, C. inornata, C. oblonga, C. orbicularis, 

 C. pusilla, C. scutulum, C. spinigera, C. trituberculata. 



