CLAUSILIA.. 317 



There are seven palatal plicae : the upper long, near to and parallel 

 with the suture, the second one quarter of the length of the 

 upper, the third still shorter but parallel with the first two ; the 

 fourth very short and oblique; the fifth considerably longer, 

 oblique, with a short support below near its posterior extremity ; 

 the sixth also oblique and bifurcate posteriorly ; the seventh 

 curved, near the parietal margin of the peristome. This shell is 

 here delineated. 



Fig. 109. Clausilia gouldiana var. magna. 



A second specimen from Phaboo, in the Hungerford collection, 

 measures 12-5 x 6 mm. and possesses 12| whorls. 



280. Clausilia andersoniana, Mdllendorff. 



Clausilia (Pseudonenia) andersoniana, Mollendorffj J. A. S. B. li, 

 pt. 2, 1882, p. 12, pi. 1, fig. 12. 



Original description: "Testa ventriculoso-fusiformis, solidula, 

 subtilissime striatula, fere laevigata, pallide corneo-fusca, apice 

 obtusiusculo ; anfr. 10 convexiusculi, ultimus valde attenuatus, 

 subtus rotundatus, distinctius striatus ; apertura parum obliqua, 

 oblique piriformis, peristoma continuum, valde solutuin, expansum, 

 reflexiusculum, pallide corneum. Lamella parietalis supera obliqua, 

 sat valida, cum spirali continua, infera crassa ante marginem 

 subabrupte desinens, subcolumellaris immersa. Plica principalis 

 valde elongata, palatales tres subveutrales, divergentes, infima 

 arcuata. Clausilium ? 



" Alt. 20, lat. 4, apert. long. 4|, lat. 3^ mm." (Mollendorff.) 



Nab. Mergui Archipelago (Anderson). 



" Nearly related to insic/nis, Gould. Differs by the smaller size, 

 less ventricose shape, the number of whorls 10 instead of 9, the 

 more elongate and oblique aperture, the freer and more protruding 

 peristome, and its paler colouring and by the closing apparatus. 

 The latter is much more immersed inasmuch as the palatal plaits 

 of Cl. insignis are lateral, while those in the new species are 

 nearly ventral and are, together with the inner end of the very 



