PETRIFICATA DERBIENSIA. 
ORDO I. ANIMALIA. 
ENTOMOLITHUS. 
* Familice permanentes, 
* b * Oniscltse. 
1. Ent. Oniscites oblongo-ovatiis, margine integerrimo, dorso carinato: Derbiensis, 
segmentis triarcuatis tuberculatis, capita gibboso: tuberculis duobus 
(oculis?) lunatis, cauda integra. 
Tab, 45. Fig. 1, 2. Tab. 45*. Fig. I, 2. 
Derbyshire Oniscite. 
Sedes : strata vetusta, saepisslme calcaria. 
In the black-marble quarries at Ashford — On Bakewell Moor, in 
rotten-stone. 
SPECIMINA. 
b. S. segmentis lasvibus. 
c. S. corpora pisiformi, onisci vivi instar contracto. 
Obs. Specimen h. with smooth segments, a. nucleus; differs, therefore, only accidentally from 
the more common examples of the species— c. not often met with. 
