204 



U.S. NATIONAL MUSEUM BULLETIN 23 6 



Figure Id. — Jmphiascopsis cinctus (Claus), loc. 425, ad, $ : a, whole animal, lateral view 

 from right side; b, same animal, dorsal viewj c, leg 5. (a, b, X 165; c, X 275.) 



5th thoracic somite distinctly visible in dorsal and lateral view. 

 Abdominal somites 1 and 2 fused to form large genital somite; line 

 of fusion distinct dorsally and laterally. Genital somite not swollen 

 laterally and only slightly shorter than combined lengths of abdominal 



