222 MESSES. BEADT, PAEKEE, AND JONES ON 



59. Lagena sulcata, Walker & Jacob. (Plate XLIV. figs. 18, 22, 34. Var. acuti- 

 costa, Reuss, figs. 26, 31.) 



Lagena sulcata, Chall. Report, p. 462, pi. 57. figs. 23, 33, &c. 



Figures 18, 22, and 34 represent typical specimens, the latter two being the mucro- 

 nate form of test. Figures 26 and 31 might with equal justice be assigned to Lagena 

 acuticosta, Reuss (Chall. Report, p. 464, pi. 57. figs. 31, 32, &c), a variety only 

 separable by comparative characters of little zoological value, depending upon the 

 number and degree of development of the costse. 



60. Lagena steiata, d'Orbigny. (Plate XLIV. fig. 28.) 

 Lagena striata, Chall. Eeport, p. 460, pi. 57. figs. 22, 24, &c. 



At 260 fathoms. 



61. Lagena lineata, Williamson, sp. (Plate XLIV. fig. 33.) 

 Lagena lineata, Chall. Report, p. 461, pi. 57. fig. 13. 



This little shell, a solitary specimen, may perhaps most aptly be treated as a compressed 

 modification of Williamson's species. 



62. Lagena melo, d'Orbigny, sp. (Plate XLIV. figs. 21, 24, 25 (1).) 

 Oolina melo, d'Orbigny, 1839, Foram. Amer. Merid. p. 20, pi. 5. fig. 9. 

 Lagena melo, Chall. Eeport, p. 446. 



D'Orbigny's figure of this species, loc. cit-, is that of a pyriform entosolenian Lagena 

 with an exogenous surface-reticulation, of which the longitudinal and transverse bands 

 are of the same thickness and elevation. Such specimens are comparatively rare. On 

 the other hand, shells with strong longitndinal ridges and slender transverse bands, as 

 represented in fig. 21, are tolerably frequent. Figure 24 shows some approach to the 

 form of ornament found in L. hexagona, Will., sp. 



63. Lagena laevigata, Reuss, sp. 



Lagena Icevigata, Chall. Report, p. 473, pi. 114. fig. 8. 

 At 260 fathoms. 



64. Lagena maeginata, Walker & Boys, sp. (Plate XLIV. figs. 27, 29, 30, 32.) 

 Lagena marginata, Chall. Report, p. 476, pi. 59. figs. 21-33. 



Generally distributed. 



65. Lagena oebignyana, Seguenza, sp. (Plate XLIV. fig. 20.) 

 Lagena orbignyana, Chall. Report, p. 484, pi. 59. figs. 24-26, &c. 



In the two deep soundings. 



