224 RET. E. BOOG WATSON ON THE 



Mouth, outer and inner lip, snadpillar are not fully developed. The 

 generic sinus is parabolic shaped. H. 061. B. 0*19, least 017. 

 Penultimate whorl, height 012. Mouth, height 013, breadth 0*1. 

 This species is somewhat like Turritella sinuata, Rve. but is 

 a narrower shell with higher whorls, which are less convex ; the 

 apical whorls are much larger, and the apex itself sharper and more 

 prominent. 



5. Turritella Cordismei, n. sp. 



St. 162. April 2, 1874. Lafc. 39° 10' 30" 8., long. 146° 37' E. 

 Moncceur Island, Bass Strait. 38-40 fms. Mud. 



Shell. — A very narrow cone ending in a small, slightly swollen 

 rounded, and depressed point, rather glossy, of a suffused yel- 

 lowish-brown colour with ruddy spots. Sculpture. Longitudi- 

 nals — there are many fine, close-set, deeply curved lines of growth. 

 Spirals — on the edge of the base there are two strongish flattish 

 threads, the lower a little contracted within the other ; they are 

 parted by a flat open furrow, in the bottom of which runs a fine 

 thread: similar to this last there are about six equally parted 

 spiral threads on the side of the whorls, and about seven, closer 

 set, on the base ; besides these there are several finer ones. The 

 microscopic spirals of the genus are sharp and distinct. Colour 

 a suffused yellowish brown, with small ruddy-brown and white 

 flecks on the upper part of the whorls. The apex is glassy white. 

 The whole shell is rather polished. Spire high aud perfectly 

 conical. Apex consists of 1| small, rounded, slightly tumid and 

 depressed whorl. Whorls 12 (but the shell is not full-grown) ; 

 they are a little convex on the side, with a slight gradual 

 rounded contraction into the suture above and below ; but the 

 convexity is less on the earlier whorls. The edge of the base is 

 faintly contracted and bluntly augulated ; the base is a little 

 convex and but slightly conical. Mouth fyc. not fully developed. 

 The generic sinus on the outer lip is a deep semioval. H. 0*44. 

 B. 0*13, least 0"12. Penultimate whorl, height 0'07. Mouth 

 height 0-1, breadth O'OS, 



With some resemblance to T. philippensis, this species is much 

 smaller, and differs entirely in sculpture and in the form of the 

 whorls and shape of the apex. 



6. Turritella austrlna, n. sp. 



St. 144 b. December 26, 1873. Lat 46° ?' p" S., long. 37° ?' ?" E. 

 Off Marion Island, Prince Edward Island. 100 fins. 



