PLATE 59. 
Big. 1,2, 3: ENDOCERAS PROTEIFORME, (Pag. 216.) 
1 a,b. Var. tenuitextum. The surface markings on two different specimens, somewhat enlarged beyond the 
natural size. 
2 a,b. Var. tenuistriatum. The surface markings on two different specimens, both slightly magnified. 
3 a. Var. lineolatum. This presents only transverse strie ; but some specimens show minute longitudinal ones, 
passing into the preceding variety. 
3. Var. lineolatum. The surfaee is covered by fine spots or stigmata, as if some adhering softer substance had 
been separated from it. The same is observed in 2 6, in a less degree. 
Fig. 4. 287. 1. CoNnvuLARIA TRENTONENSIS. (Pag. 222.) 
4 a. A specimen (natural size), with the apex broken off. 
4. Another specimen, more abruptly acute. 
4c. Transverse section of 4 a, near the apex, showing the septum and siphuncle. 
4d, e. Lateral and transverse view of a fragment, showing the convex septum. 
4 f. A portion of the surface enlarged. 
Fig. 5. 288. 2. CoNULARIA GRANULATA. (Pag. 223.) 
5 a. A specimen nearly entire, giving the general form of this species. 
5 b. A portion of the surface enlarged. 
Fig. 6. 289. 3. CoNULARIA PAPILLATA. (Pag. 223.) 
6 a. An imperfect specimen, of the natural size. 6 b. A portion magnified. 
Bigs ts 290. 4. CoNnULARIA GRACILE. (Pag. 224.) 
7 a. A specimen (natural size), the apex broken off. 7b. A portion of the surface enlarged. 
