CYMOTHOIDEA. 779 



Spheroma OBTUSA. 



Corpus IcBve, nudum. Segmentum abdominis posticum subtriangulatum, 

 lateribus prope apicem subito convergentibus, apwe obtuso ; concavitate 

 ventrali posticd lata. Lamellae caudales abdomine plane breviores, 

 integral, ad apicem amboe truncatw. Pedes Iwves, fere nudw, a&quh 

 tenues ; secundi primis tertiisve longiores. 



Body smooth, naked. Feet smooth, nearly naked. Segments of 

 thorax similar. Last abdominal segment subtriangular, the sides 

 towards apex abruptly convergent, apex obtuse; ventral cavity 

 broad behind. Caudal lamellae shorter than abdomen, entire, both 

 truncate at apex. Feet smooth, nearly naked, all equally slender; 

 second pair longer than first or third. 



Plate 52, fig. 5 a, animal, enlarged ; b, abdomen, under view. 

 Bay of Islands, New Zealand, along shores of Parua Harbour. 



Length, three lines. Colours, dull yellow or brownish yellow. The 

 first thoracic segment is nearly as long as the next two together. 

 The outer of the caudal lamellae has both sides slightly convex, and 

 has the same width nearly at base and apex. Tarsus of the legs ter- 

 minates obtusely and is furnished at apex with a very short and 

 slightly curved hook, a short spine below the hook, and a slender 

 pair of setae between the two. 



Spheroma verrucauda ? White. 



From Bay of Islands, New Zealand; found in rotten wood, in 

 cavities bored by Teredo. 



Length, seven lines. Colour, dirty gray, and without lustre. In 

 the specimens referred to this species, the surface has a tomentose 

 appearance and is granulous. Abdomen with a granular surface and 



