'24 THE NAUTILUS. 



Cyprcea mappa var. viridis. New Caledonia. Both back and 

 base colored green or with only the dorsal surface suffused with a 

 greenish tint. 



Cypr&a breyeriana var. barbara. New Caledonia. " Shell dif- 

 fering from C. bregeriana in the fineness of the dentition and without 

 the violet coloring interstices, interior lined with white, not violet- 

 purple as in (J. bregeriana." 



Cyprsea ftclvola var. borneensis. Borneo. Shell smaller, with nar- 

 rower sides, not incrassated or angulated, dorsal surface reddish-pink 

 sprinkled with white, sparsely overlaid with brown spotting, base and 

 extremities white. 



Cyprcca helvola var. timorensis. Timor Island. Differing from C. 

 heluola in having white, not lilac, extremities, which are calloused, 

 twin callosities at the posterior extremity. 



Oyprcea poraria var. vibex. New Caledonia and New Hebrides. 

 Considerably larger than normal examples, and distinguished by a 

 white porcellanous band or stripe, extending from one extremity to 

 the other, thus dividing the dorsal surface into two equal parts. 



Cyprcea miliaris var. diversa. Shark's Bay, West Australia. 

 " Specimens very light in color, almost white, but showing spotting 

 perfectly : they are quite distinct from C. eburnea, the teeth are not 

 so coarse, the enamel of the dorsal surface is not so shining, the in- 

 terior is colored pink or pale violet, while the interior of C. eburnea 

 is either white or orange ; specimens are comparatively small." 



Cyprcea carneola var. rubicola. Hawaiian Islands. The color of 

 the teeth is a '' bright rose-pink, in contradistinction to the purple- 

 hued dentition of C. carneola or the colorless base and dentition of 

 C. lxbbeckiana."C. W. .1. 



THE MARINE WOOD-BORERS OF AUSTRALASIA AND THEIR 

 WORK. A paper read before the Australasian Association for the 

 Advancement of Science. By Chas. Hedley. An exceedingly inter- 

 esting paper, giving an account of their method of propagation and 

 boring ; their ravages, remedies, natural enemies and classification. 

 The ship-worms of Australasia belong to two genera, Uperotis and 

 Nausitoria. The genus Teredo is at present unknown in that region, 

 although " Teredo navalis " is indiscriminately applied by engineers 

 to all ship-worms. The paper is illustrated by four plates C. W. J. 



