Bull. U. S F. C. 1 899 (To face page 492) 



PLATE XIII. 



166 





iBv-v;- 



WJM^ 165 



lis. 

 iw. 

 i.'^i. 

 1.^.1. 

 l.'vj. 

 1.5;;. 

 l.'>4 



l.W 

 lot;. 



A.vnrix sp. from Paralirhllitm (Imtiilnx. continucil. ri>st<;rior end 



4il' .epfcinu'U shown in figure MC. < T.'i. 

 H^'iiii i>i s[.ci-imon froni aiiothrr lot. x 'itiS. 

 I'o«j|CTi"r (.Mill of sumt*. -^ '2*2.5. 



I'osttTinT rnd of specinu^ii from another lot. x "o. 

 I'ostfiiiir i-iiil of another from a •litlrrent lot. >' 22.V 

 ,4.«.(i)/.';s|>.. iiauialnn-. from Pai'ilii-lilliiixntiliinijus. Head, x II'li. 

 l'osteri<ir end. lateral view. -; -1.5. 

 As<iii i.^ sjj., immature, from Botlnia mnruhitus. Lali-ral view of 



head. ,., 2UI. 

 Dorwil view of head, v 21U. 

 Posterior end. ,x 24. 



l.iT. Ax. 



.«rari.* sp.. iinmatnre. from ll'iniiriptn'un amtrtcanui^. Head. 

 ,., 150. 

 15,s. Head of younger specimen. ■ I.'iO. 

 1.59. Posterior end of same, x 1.50. 

 IfK). A:^i'ari.'iii\i.irnm Mrrlurntisbilhiriiri!'. Head, x 225. 



161. Posterior end. ■; 130. 



162. Head of specimen from another lot. x 225. 



163. ./).«car(.i sp. from Anlimiim riohi. Head, x 170. 

 KM. Head of another specimen. .-170. 



165. I'osterior end f»f same, x 170. 



166. /l.vT«rf5sp. from PA.vc/A'/OiH/>-. Head. ■ 22-5. 

 I 167. Posterior end. x 225. 



