EXPLANATION OF PLATES. 



Plate 1. 



Figs. 1.2. Laffcna aciiticosta. X50. Front views. 1)2395. 



3. Laiit'ua avuticostu. X50. Front view. In 8 fathoms, off Cape 



Porpoise, Maine. 



4. Lagena advcna. X50. Front views. D21.j0. 



5. Lagena apivulata. XT."). «, front view; h, apertural view. After 

 H. B. Brady. 

 6-8. Lagena aspera. XIOO. Figures 7 and 8. alniormal specimens. After 

 Balkwill and Wright. 

 9. Lagena hicarinata. XIOO. a, front view; h. apertural view. After 

 Balkwill and AVriglit. 



10. Lagena botelliformis. X75. After H. B. Brady. 



11. Lagena catrniilafa. After Williamson. 

 12,13. Lagena ea-stanea. X50. Front views. D2144. 



14. Lagena {:-7(r(/.s«//.s-. X120. After Heron-Allen and Earland. 

 1.5. Lagena ehivata. After Williamson. 

 36. Lagena losfntfi. After Williamson. 



179 



