154 



TERRA NOVA" EXPEDITION. 



17 nun. in length. The median tootli lias a central denticle, and usually two lateral 

 cusps at each side. The radulae of specimens B and C show much the same variation 

 in the shape of the median tooth, and the different lateral teeth are in agreement with 



FIG. 1C. Noxcliites clian-oll, mandibles, x 2. 



Fir;. 18. Mosclites cliareoti, ovary, X 3. ml., 

 Oviduct ; od yl., oviducal gland ; oc., ova. 



Fi<;. 20. Moschites cltarcot!, oviducts and interior 

 of ovary, X 3. ntt.ocl., Entrance to oviduct . ; 

 ail., oviduct ; od.(jl., oviducal gland ; uv., ova. 



Fin. 17. Moschites i-Jmrcutl, funnel- 

 organ, x I. 1 ,. 



FIG. 19. Nuscliites char- 

 coti, ova much enlarged. 



FIG. 21. Mosclitlcs cliareoti, 

 statolitb, X 35. 



those oi' specimen A. The ovary (Fi\ 18) of a female from this haul, with mantle- 

 Icn^tli of :!f> mm., is packed with eggs (Fig. 1'J), the largest measuring 1 '50 mm. in 

 Icii'jth. They have longitudinal ridges on their outer surface, and somewhat similar 



