350 EXPLANATION OF PLATES. 



15. Placiphorella borealis Pils. (Insertion-plate seen from end 



of valve). Pilsbry del., . 309 



16,17. Placiphorella borealis Pils. (posterior valve). Pilsbry 



del, 309 



18-24. Placophoropsis atlantica V. Tr. Conn. Acad., . .313 



25. Placiphorella petasus Rv. Conch. Icon., . . .311 



26, 27. Placiphorella blainvillii Sowb. Conch. Icon., . . 310 

 28-32. Placiphorella blainvillii Sowb. Emerton del., . . 310 



PLATE 67. 



33-36. Plaxiphora carpenteri Had. Chall. Rep., . . 325 



37, 38. Chsetopleura hahni Rochebr. (^Plaxiphora fremblyi) 



Miss. Cap Horn, 318 



39, 40. Chsetopleura frigida Rochebr. (=Plaxiphora setiger, 



young). Miss. Cap Horn, ..... 317 



41, 42. Chsetopleura savatieri Rochebr. (= Plaxiphora setiger) 



Miss. Cap Horn, 317 



43-46. Plaxiphora simplex Cpr. Chall. Rep., . 320 



PLATE 68. 



51-54. Plaxiphora biramosa Q. & G., Voy. Astrol., . .319 

 55-61 . Plaxiphora superba Cpr. (=biramosa Q.). Emerton del. 319 



62, 64. Plaxiphora petholata Sowb. Pilsbry del., . . 323 



63,66. Plaxiphora petholata Sowb. Emerton del., . .323 



65. Plaxiphora petholata Sowb. Ross, del., . . .323 



67. Plaxiphora petholata Sowb. Conch. Illustr., . . .323 



68-72. Plaxiphora glauca Q. & G. Voy. Astrol., . . 326 



NOTE. The Parts of Vol. XIV of the MANUAL were issued to 

 subscribers upon the following dates : 



Part 53, including pp. 1- 64, plates 1-15, July 25, 1892, 

 Part 54, " " 65-128, " 16-30, Nov. 25, 1892. 

 Part 55, " " 129-208, " 31-40, Feb. 25, 1893. 

 Part 56, " " 209-350, " 41-68, June, 1893. 



The Title page, Preface and Introduction to Polyplaeophora, 

 accompany Part 56. 



END OF VOL. XIV. 



