SUPPLEMENTARY APPENDIX.

123

ReMOPLEU RIDES, Poi’tl. p. 116.

Colbii, Portl.dorso-spinifer, Portl.lateri-spinifer, Portl.longi-capitatus, Portl.longi-costatus, Portl.

Trinucleus, Lhwyd.

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

Caractaci, Murch. Ibid. p. 56.

II. To the above List of British Trilobites must be added those species described sincethe publication of Mr. Morris’s Catalogue, and which have not come under the inspection ofProfessor Burmeister.

In Mr. M'Coy’s £ Synopsis of the Carboniferous Fossils of Ireland, ’ the following newspecies are described and figured :*

Griffithides calcaratus. Phillipsia (?) discors.

Phillipsia coelata. Phillipsia mucronata.

Phillipsia Colei. Phillipsia quadriserialis.

In Mr. M‘Coy’s ‘ Synopsis of the Silurian Fossils of Ireland, ’ collected by Mr. Griffith(Dublin, 1840), 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 twosmall cephalo-tlioracic 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 genusGriffithides, Portl., except in being apparently blind.” (Loc. cit. p. 43.) One species,T. insculplus, in the limestone of the Chair of Kildare.

Forbesia. New genus. [From the description and figures this genus would appearto be synonymous with Proetus.] F. latifrons.

Portlockia. New genus. Cephalo-thorax truncato-orbicular, lateral angles notproduced into spines; glabella large, clavate, widest in front, reaching to the margin,contracting to a narrow neck behind; neck furrow 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 simplesegments ; margin entire, smooth.

The genus includes Calymcne tuberculata and C. macrophthalma of the Silurian system ;Phacops tuberculata of Captain Portlock’s report; Calymcne nupera, Hall; Calymene bufo,Green, &c.

* In the same work are described and figured the following allied Crustacea from the carboniferouslimestone of Ireland: Dithyrocaris (Scoular) Scouleri; Entomoconchus (new genus, M'Coy) Scouleri;Cytherina Phillipsiana of De Koninck; Daphnia primaava; Bairdia (new genus, M £ Coy) curtus.

B. gracilis; Cythere amygdalina, C. arcuata, C. bituberculata, C. 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.

Trinucleuselongatus, Portl.fimbriatus, Murch. Ibid. p. 57.latus. Portl.

Lloydii, Murch. T. granulatus, p. 57.nudus, Murch. an Ampyx. (note, p. 57).

? punctatus, Murch.

radiatus, Murch. Trinucleus ornatus, p. 58.seticornis, Portl. p. 58.