CYMOTHOIDEA. 



781 



abdominis obtusius. Dens posticus segmenti thoracici septimi spinir 

 formis, dimidio abdominis longior. Lamellce caudales latiores et abdo- 

 minem longitudine paulo snperantes ; externd prope apicem obsolete 

 serrulatd. 



Near S. armata in form, caudal lamellae and abdomen above and below. 

 Body more depressed, smooth, naked, apex of abdomen more blunt. 

 Tooth of seventh thoracic segment elongate spiniform, longer than 

 half the abdomen. Caudal lamellae broader, and extending a little 

 beyond the abdomen 5 outer near its apex obsoletely serrulate. 



Plate 52, fig. 8 a, animal, enlarged j b, under view of antennae ; c, 

 abdomen, under view. 



In bored wood, and in pools of water along shores of Parua Harbour, 

 Bay of Islands, New Zealand. 



Length, three to four lines. Colour, brown or brownish green; 

 some specimens with a longitudinal medial broad line of emerald 

 green. This species is very near the armata. But its caudal lamellae, 

 though like those of the armata in form, extend beyond the apex of 

 the abdomen, and are broader; and the spiniform process of the 

 seventh thoracic segment is quite long. 



2. Abdomen postict emarginatum velfissum. 



Spheroma GLOBICAUDA. 



Corpus fere lawe, partim subtilissimZ granulosum et pubescentulum, 

 Abdomen subtriangulatum, propter partem versus margines valde 

 tumidum, posticd unifissum, fissurd profundd et ad ejus extremitatem 

 internam utrinque paulo transversim productd. Appendices caudales 

 abdominem parce superantes, lamelld internd latiore, parce longime y 

 apice latd rotundatd, externd quoad marginem externum valde reflexd. 



Body nearly smooth, in part very fine granulous and pubescent. Ab- 

 domen subtriangular, very tumid, excepting the part towards the 

 margin around ; at extremity a deep fissure, which at its inner end 

 is produced a short distance transversely in either direction. 



196 



