148 
PROCEEDINGS OF THE VICTORIA INSTITUTE. 
208. ]\1. t>r*£tsilien sis Chemn. Wood, Appendix, p. 
234. 
M. guainensis Lam. 
M. semifusca Sow. 
207. ]\£. lig-neus Reeve. 
This species spins a bag entirely covering the shell. It was 
found in 2-3 fathoms water on a bottom of sandy mud. Reeve 
gives no locality for his shell. 
208. ]*T. exustus Linn. Orb. Moll. Cuba, pi. xxviii,f. 6, 7. 
M. citrinus Chemn. Wood, Inch Test. Area 15. 
M. sulcata Lam. 
209. ]\T. doming'ensis Lam. Orb. Moll. Cuba, vol. ii, 
pi. xxviii, f. 8, 9. 
M. exustus. Lam. 
210. Mi. lavalleanns Orb. Moll. Cuba, pi. xxviii, f. 3, 1. 
M. cubitus? Say. 
Crenella Brown. 
-11. Cl*, viator Orb. Voy. Amer. Mer. pi. lxxxiv, f. 34-37. 
Lithodomus Cuvier. 
212. I. bii^ennifeiuis Guppy. Proc. S. A. Trinidad, 
Dec. 1877, p. 154. Idem Dec. 1881, 
p. 178, pi. vii, f. 14. 
This species seems to have been confounded with its West 
African analogue, A. caudigerus Lam. with reference to which 
see Journ. Conch. 1865, p. 127. L. bipenniferus is more cylin- 
lical , th„ umbones are usually less prominent and more 
leaily terminal , the dorsal edge has rarely so pronounced an 
angle. Burrows in limestone and corals. 
