112 BULLETIN 11, UNITED STATES NATIONAL MUSEUM. 



Plate 7. 



Fig. 1. Lagena catenulata. X 150. a, front view; b, apertural view. 



2. Lagena catenulata. X 75. 



3. Lagena foveolata. X 75. a, front view; b, apertural view. 



4. Lagena striata. X 75. 



5. Lagena striata. X 75. 



6. Lagena striata, var. haidingeri. X 75. a, front view; b, apertural view. 



7. Lagena striata, var. strumosa. X 90. 



8. Lagena striata, var. strumosa. X 90. 



9. Lagena striata, var. strumosa, neck. X 150. 

 10. Lagena striata, var. strumosa, neck. X 150. 



Plate 8. 



Fig. 1. Lagena striata, var. substriata, elongate form. X 150. a, front view; b, aper- 

 tural view. 



2. Lagena striata, var. substriata. X 150. 



3. Lagena striata, var. substriata. X 180. Apertural portion of unbroken speci- 



men showing spiral ornamentation of neck. 



4. Lagena mucronulata. X 75. 



5. Lagena gracilis. X 75. a, front view; 6, apertural view. 



6. Lagana gracilis, neck. X 150. 



7. Lagena gracilis, var. X 150. 



8. Lagena inferocostata. X 75. a, front view; b, apertural view; c, basal view. 



9. Lagena acuticosta. X 75. a, front view; b, apertural view. 

 10. Lagena acuticosta. X 75. 



Plate 9. 



Fig. 1. Lagena acuticosta, var. paucicostata. X 75. a, front view; b, apertural view. 



2. Lagena sulcata. X 75. 



3. Lagena sulcata, var. apiculata. X 75. a, front view; 6, apertural view. 



4. Lagena sulcata, var. apiculata. X 90. 



5. Lagena sulcata, var. alticostata. X 75. a, front view; 6, apertural view. 



6. Lagena costata. X 75. 



Plate 10. 



Fig. 1. Lagena costata. X 45. a, front view; fc, same by transmitted light; c, aper- 

 tural view. 



2. Lagena costata, var. amphora. X 150. 



3. Lagena costata, var. amphora. X 75. 



4. Lagena costata, var. polygonata. X 90. a, front view; 6, apertural view. 



Plate 11. 



Fig. 1. Lagena unguiculata. X 60. 



2. Lagena seminiformis. X 45. 



3. Lagena torquata. X 75. 



4. Lagena orbignyana, var. clathrata. X 75. 



5. Lagena favoso-punctata. X 75. 



6. Lagena formosa. X 50. 



7. Lagena formosa, var. favosa. X 60. 



8. Lagena formosa, var. comata. X 75. 



