382 BRITISH GRAPTOLITES. 



Tlio siculii is ahout 2 iniii. in leiigtli, the apex being on a level with the aperture 

 of til. 1, which is I'atlier long. 



The thocjB are approximately constant in number throughout the length of the 

 polypary, and their overlap remains approximately the same; the apertural margin 

 shows a tendency to the formation of a distinct flange, which when compressed 

 gives rise to a denticle. 



Afinifies. — Monofj. comis presents many resemblances to M. (?nhius, but it is 

 altogether a smaller and more graceful form. 



Horizon tnid Lorttlitics. — Lower Ludlow Shales (zone of M. Nilssojii). 



Liidloiv District : Elton-Evenliay Lane; Elton-Ludlow Road. 



Associates, etc. — Monoij. comis has hitherto only been recorded from the Ludlow 

 district, where it occurs in the zone of M. Nilssoni. 



Collection. — Wood. 



Monograptus rf. gotlandicus, Perner. Plate XXXVII, fig. 8. 



1890. Monograptus sp., Holm., Gotlands Graptoliter, p. 18, pi. i, figs. 27—30. 



1899. 3Io7u>grapfus gotlandicus, Peruer, Etudes sur les Graptolites de BoliOme, pt. iii, sect, b, p. 12, 

 pi. xiv, fig. 22. 



1900. Monograptvs gotlandicvs. Wood, Quart. Joiiru. Geol. Soc, vol. Ivi, p. 460, pi. xxv, fig. 7. 



Polypary rather short, abont o cm. or rather more in length, with slight ventral 



curvature in the proximal portion, increasing gradually in width until 



a breadth of rather more than 2 nnn. is attained. Thecse nine to eight in 



¥m. 2o2.— Monogvapiuii cL fjoiuuniia^s, 3 mm., the adult oncs about o mm. in 



length and four and a half times as long as 

 A,>:'; Avide, narrowing somewhat in the apertural 



region, and overlapping one-third to one- 

 half their length ; average inclination 25^ — 

 35°. 

 I)escri}ition. — In its general form the polypary 

 presents no particularly distinctive features ; it 

 attains its maximum Avidth fairly gradually. 

 ^^1* The sicula seems to have a length of about 2 



M mm. and to be rather Avide at its aperture. 



Proximal end, showing sieuia. Enlarge- ^-'^^e thecse, liowever, are characteristic, particu- 



ment of part of PI. xxxvii, fig. 8. ].^j.|^ ^^ regards a diminution in breadth in the 



apertural region, with a slight suggestion of the ogee curvature found in the 

 members of the M. comeriuas group ; they are very long, and the aperture is 

 flanged. 



Affinities. — The reference of this Britii^h form to il/. (jollaiuJicii.s is pro- 





