34i4i ON THE GENUS BATHTNELLA. 



EXPLANATION OF PLATE 20. 



Kg, 1. Bathynella natans, Vejcl. (Altered from Vejdovsky.) X 100. 



This figure was constructed from Prof. Vejdovsky's publishedjfigure 

 and from observations on the preserved specimen. It conforms accu 

 rately (except that the abdominal segments appear a little shorter) with 

 an original sketch (taken from the living animal) subsequently sent^me 

 by the author. 



2. AnaspidestasmanicB, Gt.'NL.lLh.om.son.. x3. (Original.) 



3. Third thoracic limb of Bathyiiella. (Original.) 



4. Third thoracic limb of Anaspides. (Original.) 



Eeference Letters. 

 a', a". First and second antennee. 

 b. Basal joint of thoracic leg. 

 c, Coxal joint of thoracic leg. 

 c.ffr. "Cervical groove" of Anaspides, marking off so-called "first 

 thoracic somite." 

 e. Eye. 

 end. Endopod of thoracic leg. 

 e]). Epipod of thoracic leg. 

 ex. Exopod. 



/. Caudal furca of Bathynella, (Dorsal caudal-plate of Vejdovsky.) 

 g. Supposed testis. 

 m.p. Mandibular palp. 

 mx\ moo". First and second maxillse. 



p. " Penis-like process " of last thoracic limb. 

 t. Telson. 

 iir. TJropod. 



I. First thoracic somite, bearing maxillipeds. 

 II. Second thoracic somite. 

 VIII. Last thoracic somite. 

 1-6. Abdominal somites. 



