FROM THE CARBONIFEROUS FORMATION. 181 



Explanation of the Plates, 

 plate x. 



Acantherpestes major. Attempted restoration of a specimen, not of the largest size, for which there was 

 not room on the plate. The body is made rather too slender and not sufficiently tapering ; the head, being very 

 imperfectly known, is concealed by a drooping frond of JVeuropteris Clarksoni Lesq. The specimen is repre- 

 sented as leaving the water in which it is still swimming by means of its hinder legs, and as creeping up the 

 trunk of a Lepidodrendron (L. vestitum Lesq.). Upon the trunk crawls a cockroach, Etoblattina mazona 

 Scudd., while a broken stem of a Calamites (C. Cistii Brongn.) has partly fallen into a clump of fern, 

 Neuropteris Loeschii Brongn. All the figures are of the natural size, and represent species found in the 

 nodules of Mazon Creek. The plants however, with the exception of the last, are among the rarer species. 

 Drawn by J. S. Kingsley. 



PLATE XL 



[Figs. 4 and 10 are from the drawings of J. H. Blake; figs. 5 and 9 are copied ; the remainder are by J. S. 

 Kingsley. All the original drawings are from specimens in the collection of Mr. Can-.] 



Fig. 1. Acanthctyest.es major j. This specimen shows in the middle the interior faces of the ventral 

 plates, and elsewhere the dorsal plates. 



Fig. 2. The same f . The reverse of the central portions of fig. 1, showing nearly the appearance of 

 the under surface of the body. 



Fig. 3. The same f . The central portion of fig. 1, magnified. 



Fig. 4. The same \ -. A pair of the supposed branchial supports, as they appear in fig. 2, enlarge . 



Fig. 5. Acantherpestes Brodiei of England \. Copied from PL 1, fig. 11, of Brodie's Fossil insects of 

 the secondary rocks of England. 



Fig. 6. Acantherpestes major \. The most perfect large specimen that has been discovered. 



Fig. 7. The same \. One of the disk-like bodies which cover the surface of the whole fossil excepting 

 the legs. 



Fig. 8. The same \. One of the subdorsal spines of fig. 6, on the hinder part of the body ; it unfortu- 

 nately does not show the base of the third spinule referred to in the text, the original drawing having been 

 lost. 



Fig. 9. Uhonionotus lithanthraca of Germany \. Copied from Palaeontographica, Vol. IV, pi. 2, fig. 3. 



Fig. 10. Acantherpestes major \. The head of a third specimen, to show the eye. 



Fig. 11. The same \. Three adjoining legs from the middle _of the body of the large specimen repre- 

 sented in fig. 6. 



PLATE XII. 



[Figs. 7, 8, 21 and 23 are copied. The others are from drawings by J. S. Kingsley.] 

 Euphoberia armigera \. Specimen from Mr. Carr's cabinet. 



The same f . An enlarged spine from the above. 



The same f . An enlarged view of the head of the above. 



Euphoberia Carri {. Part of the anterior segment of the specimen shown in fig. 16. 



Euphi'h rin armigera '}. Anterior extremity of the specimen shown in the next figure. 



The same. {. Specimen from Mr. Worthen's collection. 



Euphoberia Brownii of Scotland. Enlarged view of some of the segments. Copied from the 

 Geological Magazine, Vol. VIII, pi. 3, fig, 6 b. 



The same. One of the legs still further enlarged. Copied from the same, fig. 6 c. 

 Euphoberia Carri f . The doubled specimen from Mr. Carr's collection. 



The same \. One of the legs, poorly preserved, from the same specimen. 



The same f . The apparently forked spine of the same specimen. 



The same \. The reverse of the same specimen. 



Euphoberia armigera £. Two of the segments of the anterior half of the specimen shown in 

 fig. 6, exhibiting the spines. 



