78 
explanation of Plate aq". 
Kgs 4-9. Elytra of Insects in the Oolitic slate of 
Stonesheld. Mr. Curtis considers all these to be- 
long to the family Bujarestis. (Original.) 
Fig. 10. Leg of an Insect m the Stonesfield slate, Oxon 
considered by Mr. Curtis to be that of a Curculio.^ 
(Original.) 
F'g. II. A fossil Fly from the fresh water formation of 
Aix in Provence, in the collection of Mrs. Rlurchison. 
Mr. Curtis considers this Fly to be of the same spe- 
cies with one of those engraved in Fig. 11 of his 
Plate of Insects from this locality, in Jameson’s 
Journal, Oct. 1829. (Original.) 
Although it agrees with no living genus, he thinks 
It undoubtedly belongs to the family of Tipulidm, 
Itrt “ approaches 
nearer than the living Limulus to the .structure of Trilohites The 
articulation of the long awl-shaped tail with the body in Fi«- a mid 
jn other specimens is very distinct. This Limulus i the Enm^ 
rtmsmonocnhtes of Martin, iJcriiVn.m, 2'„/,.45, ^^4 ) 
'’“■“J™” ““ of II'C Cotl fornMiioT"' “ 
the occurrence of the wiiw covers of 
oVy th f Easter Zr 
Onl.-f • nearly the same place in the 
V. irp!'ri.“' See Loudon’s Mag. Nat. Hist. 
Ot? 18?5 Leyden, 1 .,aw in 
_ . d portions of the legs are distinctly preserved 
^ -*1 • *1 4‘pareutiy by the Inrvea of animals of thi<? tinA . 
and withm these cavities a I * ^ v ; 
,™ cb.„.ed b, M. scxr’Jbt'^rr; 
was lodged in a similar tube, when it ica e l ^ t 
cedony. The surface of this Insect is covZd SctS Tf‘1' 
concentric rings of Chalcedony (Orbicules of Broiigniart') «o 
mon m silicified fossil shells. ngniart) so com- 
