ASTEB0LEP1DUS. 
215 
44587. Crushed remains of head and trunk, portions showing the 
ornamentation of closely-arranged rounded tubercles. 
Purchased , 1873. 
35981. Imperfect individual, wanting almost the whole of the 
tail. A few of the head-plates and the operculum (or 
extra-lateral) are well displayed, the latter being shown 
in PI. ^ . fig. 6. The hinder edge of the posterior ventro¬ 
lateral plates of the trunk is coarsely denticulated. 
Purchased , 1861. 
35980. Crushed remains of armour of trunk, with the anterior 
median dorsal plate showing its overlapped postero-lateral 
border (PI. Y. fig. 7). Purchased , 1861. 
(iv.) Gamrie (typical P. quadratics). 
28856. Yentral plates of small trunk, visceral aspect. 
Purchased , 1854. 
28860. Imperfect specimen as large as the type, ventral aspect, 
with right pectoral appendage. Purchased , 1854. 
50C05. Small trunk, ventral aspect, showing portions of the 
tubercular ornament; the tubercles displayed are stellate. 
Trevelyan Bequest . 
P. 663-4, P. 3205-7, P. 3209. Seven split nodules, each with an 
imperfect specimen in counterpart, five exhibiting the 
ventral aspect, the sixth the dorso-lateral, and the seventh 
the dorsal. The tuberculations of the dermal plates are 
often shown; and in the last-mentioned specimen fine 
tubercles are seen upon the caudal scales. 
Egerton Enniskillen Colls. 
28356 e. Trunk, with fragments of head and appendages, ventral 
aspect. Purchased , 1854. 
47888. Crushed individual, ventral aspect, wanting the greater 
portion of the tail. Purchased , 1877. 
47869. Much crushed and broken individual, dorsal aspect. 
Purchased, 1877. 
P. 4035. Crushed individual, ventral aspect, in counterpart, with 
traces of dorsal fin. Purchased , 1883. 
P, 4036. Much crushed individual, lateral aspect, in counterpart, 
shown, of the natural size, in PI. Y. fig. 5. The head is 
almost wanting, but some of the plates of the trunk are 
i 
