108 BULLETIN 104, UNITED STATES NATIONAL MUSEUM, 



3. Ammolagena clarala. X 15. Photograph of microspheric specimen with nar- 



row elongate prolocuhim. 



4. Ammolagena clavata. X lf>- Photograph of megaloSpheric specimen with 



nearly circular proloculum. 



5. Ammolagena claiata. X 15. Photograph of broken specimen showing thin 



wall of proloculum attached to shell. 



Plate 35. 



FiG8. 1-3. Arninolagena clavata. X 30. Photographs of specimens attached to 

 shell fragments. 

 4, 5. Girvanella vagans. X -0. Photographs of specimens attached to tubeti 

 of Rhahdammina. 



Plate 3f). 



Fig. 1. Girminella vagans. X 15. Photograph of specimen with prolocuhim. 



2. Girvanella schaudinni. X 15. 



3. Aviodiscoides turhinatus. X 15. Photograph, dorsal view. 



4. Ammodiscoides lurbinaius. X 15. Side view. 



5. Ammodiscoides turbinatns. X 15. Dorsal view of small specimen, 

 ti. Ammodiscoides turhinatus. X 15. Ventral view. 



7-9. Glomospiragordialis. X 70. (After Brady.) 



IQ. Glomospira charoides. X 70. Broken specimen showing several coils. (After 



Brady.) 

 11. Glomospira charoides. X 70. Longitudinal section of test. (After Brady.) 

 l'J-15. Glomospira charoides. X 70. (After Brady.) . 



Plate 37. 



.1 inmodiscoides turhinatus. 



P^iG. 1. Complete specimen. X 20. 



2. Younger specimen. X 45. 



3. Apertural \'iew of a still younger specimen showing the conical young. X 60. 



4. The young portion of the test mthout the later coils. X 75. 



6. 6. Diagrammatic sections showing the reversing of the conical form in the late 



coils X 45. X 60. 



Plate 38. 



Fig. 1. Turritellella spectabilis. X 15. Photograph of specimen in United Statee 

 National Museum received from Doctor Carpenter. 

 2,3. Turritellella spectabilis. X 12. External view. (After Brady.) 

 4. Turritellella spectabilis. X 12. Sectioned specimen. (After Brady.) 

 5-7. Txviritellclla shoneana. X 100. a, a, side view; h, b, apertural views. 

 (After Brady.) 



Plate 39. 



Ammodiscus incertus. 



FiG.s. 1-4. ^ficrospheric specimens, the centers consisting of a microspheric prolocu- 

 lum and numerous fine coils. X 15. 

 5-7. Megalosphoric specimens, the centers consisting of a megalospheric pro- 

 loculum and a few broad coils. X 15. 

 8. Sectioned specimen, microspheric form. X 15. (After Brady.) 



