100 The Grasjyedosomatidae of North America. 



Fig. 185. — Eleventh legs of male, X 45. 



Fig. 186. — Male genitalia and ninth leg, posterior view. 



Fig. 187. — Same, anterior view. 



Fig. 188.- — Gnathochilarium. 



Fig. 189.— Antenna, X 57. 



Fig. 190. — Distal joints of antenna. 



PLATE XI. 

 Caseya heteropus. 

 Fig. 191. — Head and first six segments, lateral view, X 10. 

 Fig. 192. — Head, anterior view, X 25. 



Fig. 193. — Eye, antennal socket, margin of cephalic plate and post-a,ptennal 

 organ, the last indicated by the small ring immediately below the ocelli. 

 Fig. 194. — ^Labrum. 

 Fig. 195. — Gnathochilarium. 

 Fig. 196. — Lingual lobe, lingual lamina with conic sense organs, and 



tridentate styliform process, X 105. 

 Fig. 197.— Antenna, X 25. 



Fig. 198. — First leg of male; the specimen was injured, X 25. 

 Fig. 199. — Second legs of male, posterior view, X 25. 

 Fig. 200. — Proximal portion of same, anterior view, X 105. 

 Fig. 201. — Third legs of male, posterior view, X 25. 

 Fig. 202. — Proximal portions of same, anterior view, X 25. 

 Fig. 203.— Same, X 105. 



Fig. 204. — Fourth legs of male, posterior view, X 25. 

 Fig. 205. — Fifth legs of male, anterior view, X 25. 

 Fig. 206. — Sixth legs of male, anterior view, X 25. 

 Fig. 207. — Seventh legs of male, anterior view, X 25. 

 Fig. 208. — Proximal joints of same, posterior view, X 25. 



PLATE XII. 

 Caseya heteropus. 



Fig. 209. — Portion of basal joint of seventh leg of male, anterior view, X 

 105. 



Fig. 210. — Basal joints of tenth leg of male, anterior view. 



Fig. 211. — Same legs, posterior view, X 25. 



Fig. 212. — Eleventh leg of male, anterior view. 



Fig. 213. — Twelfth leg of male, posterior view. 



Fig. 214. — Normal leg of male, anterior, X 31. 



Fig. 215. — Male genitalia and ninth legs, ventral (anterior) view, drawn 

 in ffitu. 



Fig. 216. — Ventral portion of segments 5-8, legs 7-10, and male genitalia, 

 lateral view, drawn in situ, X 25. 



Fig. 217. — Male genitalium, median view. The small unshaded part near 

 the middle is open to the other side. 



Fig. 218. — Ninth legs of male, anterior view, X 40. 



Fig. 219. — Ninth legs of male, posterior view, X 40. 



