ART. 17 



ON TERRESTRIAL ISOPODS LOHMANDBE 



Left mandible (fig. 1 d) with the outer cutting edge formed of 

 four teeth and the inner of three. Near the base of the inner cutting 

 edge are two curved plumose setae. The molar tubercle is large, 

 prominent, and ridged. 



Pig. 1. — Haplophthalmus daniccs Budde-Lund. a. Antenndla ; 6. Antenna ; c. 

 Right mandible drawn from Swedish specimen ; d. Left mandible drawn from 

 Swedish specimen ; e. First maxilla ; ^ Second maxilla ; g. Maxilliped ; h. Penis 



First maxilla (fig. 1 e), outer lobe armed at the end with about 

 six acute, curved teeth, the two external ones being the largest, the 

 following gradually smaller. Between the teeth is a delicate curved 

 seta, thickened at the end. Inner lobe with three brushlike setae, 



