Dr. R. H. Traquair—New Coal-measure Palwoniscide. 258 
margin—a nearly smooth space being left between the last set of 
strie and the vertical ones along the front. The scales become 
smaller and more oblique posteriorly, the striation fading away, 
though the marginal denticulation remains as far back as the 
caudal fin. 
The fins are not very well preserved in any of the specimens I 
have seen. The pectorals are not visible; the dorsal is nearly 
opposite the interval between the ventrals and the anal; the caudal 
is of course heterocercal. All seem to be rather few-rayed; rays 
comparatively coarse with distant articulations, the joints being 
smooth, or ornamented with one or two delicate sulci. 
Remarks.—This well-marked species was discovered, and recog- 
nized as undescribed, by Mr. Ward, F.G.8., of Longton, who confided to 
me the specimens for description, with the request that I would name 
it Molyneuxi, after his friend, the late Mr. Molyneux, well known 
as a collector of North-Staffordshire Carboniferous fossils. It is 
the same fish which in my essay on the structure of the Palzoniscidee 
I alluded to as Microconodus Molyneuxi, and only the desire to avoid 
excessive multiplication of genera induces me to withdraw ‘ Micro- 
conodus”’ for the meanwhile. The species has undoubtedly certain 
obvious resemblances to the common Lower Carboniferous genus 
Gonatodus, but the teeth do not seem to exhibit that second flexure 
at the apex so characteristic of at least the type species G. punctatus, 
Ag. sp. From the Lower Carboniferous species of the genus it is 
furthermore distinguished by the greater comparative size of the 
scales and the coarseness of the fin rays. 
Geological Position and Locality. — Deep-Mine Ironstone, Coal- 
measures, Longton, Staffordshire. In the Collection of Mr. Ward. 
Rhadinichthys Planti, sp. nov. Traquair. 
The most perfect specimen I have seen measures 2} inches in 
length by 25 in greatest depth; its shape is therefore elegant and 
slender. The head measures 5%; inch in length, and is contained 
nearly 5 times in the total; the dorsal fin commences 1+ inch 
behind the tip of the snout, and the lower lobe of the caudal 12 inch 
behind the same point, the anal being exactly opposite the dorsal. 
The pectorals are not exhibited in any specimen I have seen, but 
traces of a ventral are seen in one case midway between the anal 
and the shoulder-girdle. 
The head shows a peculiarly large development of snout, forming 
a considerable bluntly-pointed prominence over the mouth. The 
cranial roof bones are ornamented with incised furrows, producing 
a comparatively coarse flattened ridging between them. The 
suspensorium is oblique, the operculum is broad, but with its 
inferior margin sloping obliquely upwards so as to make an acute 
angle with the anterior, and an obtuse angle with the posterior one. 
Correspondingly the superior margin of the suboperculum slopes 
very obliquely upwards and backwards, its anterior margin is short, 
and the posterior one long and rounded. ‘The upper limb of the 
