26 BOVALLIUS. NEW ISOPODA. 



The mcde. 

 Pl. V. fig. 57, 58. 



The body is more linear than in the female, the pereional 

 segments being subequal in breadtli, the third a little broader 

 than the others (37 : 15). The body is not much more than 

 twice as long as bro ad. 



The head is a little longer than in the female the front 

 margin rounded, not emarginated. The head is not twice as 

 broad as long (13 : 8). 



The processes from the first segment of the j:)grg«on are a 

 little shorter and narrower than in the female, the first segment 

 is the longest; the fifth, sixth and seventh the shortest, equal 

 in length and breadth. 



The first pleonal segment is quite free, narrower than the 

 fifth (15 : 19). The second pair of pleopoda carry a long styli- 

 form process at the inner lamina. 



The unis is not fully twice as broad as long (21 : 11), 

 sligthly rounded at the posterior margin, but scarcely emar- 

 ginated at the anterior. The pleon and urus together are only 

 a little shorter than half of the pereion with the head (11: 25). 



The u7'opoda reach almost to the posterior margin of 

 the iirus. 



Colour. Yellow. 



Length. The ovigerous female 23 m. m. 

 The young female 19 m. m. 

 The male 12,5 m. m. 

 Hah. The seas of Java (U. M.). 



The three known specimens were captured by Captain 

 Carl Gädda of the Swedish vessel »Albert Ehrensvärd», in 

 the year 1884, and presented to the University museum of 

 Upsala. 



