﻿IIOMALONOTUS. 



119 



The whole thorax and tail are sparsely covered with rather strong granules, which 

 become (see fig. 5) spinous combs along the hinder edges of the thorax-rings, but are 

 not so produced in the tail-portion. 



Altogether the species is very distinct from the Dudley fossil with which it has 

 hitherto been confounded. It appears to be abundant at the following locality. 



Locality. — Wenlock Shale (soft mudstone) of Craig y Garcyd, in the bed of the 

 Usk, Monmouthshire, whence a plentiful supply has been obtained by Mr. J. E. Lee, 

 of Caerleon, whose fine series of specimens we have figured. Mr. Nichols, jun., late of 

 Usk, now of Cowbridge, has also a fine series. Also Golden Grove, Llandeilo (Mus. 

 Pract. Geol). 



Section — Koenigia, Salter. 

 Homalonotus Knightii, Konig. PI. XII, figs. 2 — 10, and PI. XIII, fig. 8. 



Homalonotus Knightii, Konig. Icones Sectiles, pi. vii, fig. 85, 1825. 



— — Bronn. Lethsea, 1, 119, tab. ix, fig. 14, 1835; also in Leonh. 



und Bronn's Neues Jahrb., p. 445, &c, 1840. 



— — Murchison. Sil. Syst., pi. vii, fig. 1, 2, also H. ludemis, 



ib., figs. 3, 4, 1837. 



— — Milne-Edwards. Crust., iii, 315, 1840. 



— — Goldfuss. Neues Jahrb., p. 559. H. ludensis, ib., 560, 1843. 



— — Emmrich. Dissert. 41, 8, 1839. Neues Jahrb., 1845. 



— — Burmeister. Org. Trilob., Ray ed., p. 86, 1846. 



— rhinotkopis, Angelin. Palseont. Suec., t. xx, fig. 1, 1855. 



H. fere 6-pollicaris, depresso-convexus, scabriculus, capite acuto, caudd inulto breviore, 

 truncatissimo. Glabella hand convexa seu lobata, a genis latis distincta ; margine 

 frontali brevissimo tricuspidato. Oculi antici. Thorax omnino homogeneus, nec lobatus. 

 Cauda triangulata acuminata, apice obtuso vix recur vo ; axe distincto contracto, per \ longi- 

 tudinis annulato, sulcis 9 intus profundis, et cum tot sulcis lateralibus prqfunde exaratis 

 omnino continuis. Ad apicem caudce sulci axales et laterales subito absunt. Margo 

 abrupte incurvus angulatus, ad latera contractus, scabrosus. 



Of this fine species little need be said, as it has figured in every book of fossils since 

 Konig instituted the genus and gave the appropriate name. It is one of the commonest 

 and yet most choice of the Ludlow rock fossils. Fragments are found in every locality. 

 The barren mountains of Radnorshire present us with fine and nearly perfect specimens. 

 Others have been disinterred by the patient labour of the Shropshire geologists, and we 

 are indebted to Mr. G. Cocking, of Ludlow, especially, for saving every specimen that 

 could be preserved when the Ludlow railway was being made. Figs. 2 — 4 are from his 

 specimens, the crust being beautifully preserved in fig. 3. But the largest and finest we 



