12 CARL BOVALLIUS, NEW ISOPODA. III. 



The rnaxillipeds aro like those already dcscribed in N. 

 philippcnsis. 



Tlie pereion; the first segment is longer tlian thc second, 

 the second tliird and fourth are equal, the fifth and sixth are the 

 lonoest, equal, the sevcntli is as long as the lirst. The anterior 

 maro-in of the lirst segment is distinctly threc-sinuated, the 

 lar^e median sinus is much dceper than the lateral. The hinder 

 oorners of the tirst and fourth segments are distinctly produced, 

 obtuse, the ones of the sixth and scventh segments are sliarply 

 produced, the last ones reaching to the upper corner of the 

 second pleonal segment. 



The epmierals (Pl. III, lig. 2S) are very thick, the lirst 

 four pairs dilated inwards, the lirst three pairs are the shortest, 

 subequal, but longer than the corresponding segments. The 

 ones of the fifth segment are as long as the segment, obtusely 

 pointed; the epimcrals of the sixth and seventh segments are 

 -longer than the preceding, sharply pointed, subequal; they are 

 much shorter than the segments. 



The last pair of pereiojioda (Pl. II, fig. 25) are a little 

 longer and more sleudcr than the others, with shorter dactylus, 

 and three very short spiues on the inner side of the carpus. 

 The outer side of tlie femora of all pairs is hollowed for the 

 reception of the rest of the leg, thus forming two sharp keels, 

 the anterior beino- the hiofhcst. The dactyli of the first six 

 pairs are longer than the three preceding joints together, strongly 

 curved. (Ph II, fig. 24). 



The ocitectrices are three on each side, feebly striated; 

 the last pair are uncomraonly large, reaching almost to the 

 end of the urus. 



The pleon is twice as broad as long, shorter than the last 

 two pereional segments; the iitst segment is shorter than the 

 second, the others are subequal. All the upper corners aro 

 well developed, sharp, subequal in length. The inferior corners 

 of the first segment are strong, round, feebly bent upwards, 

 reacliing beyond the upper corner of the second segment; the 

 ones of the second segment are longer, reaching to tlie upper 

 corners of the last segment; the inferior corners of tlie third 

 are minute but very sharp. The two last segments want in- 

 ferior corners. 



The second pair of phopoäa are provided with a styliform 

 process at the inner lamina. 



