CoE. — Xenierteaiis. 



PLATE 22. 



Fig. 141. Zi/ijinieiitfrtes vircscens' (Verrill). Outline of antei'ior portion of 

 body, showing arrangement of ocelli, which extend in front of 

 brain and along lateral nerves. X 28. 



Fig. 142. Z. lurescens. Central stylet and basis in large individual. X 220. 



Fig. 143. Z. virescens. Accessory stylets. X 220. 



Fig. 144. Z. rirescens. Central stylet and ba.sis in very small, pinkLsh indi- 

 vidual. X 200. 



Fig. 145. Tetrastemina albidum Coe. Outline of anterior portion of body, 

 showing arrangement of ocelli in life. X 50. 



Fig. 146. T. albidum. Outline of anterior portion of body, showing arrange- 

 ment of ocelli after pre.servation. X 50. 



Figs. 147, 148. T. albidum. (Central stylets and bases in four individuals. 

 X 400. 



Fig. 149. T. albidum. Central stylet and basis. X 220. 



Fig. 150. Tetrastemma aberrans Coe. Outline of head, showing position of 

 fragmented ocelli. X 50. 



Fig. 151. Tetrastemina caecum Coe. Outline of body with extruded probos- 

 cis showing, in stipple, large size of matiu'e ova. X 20. 



Fig. 152. Amphiporus similis Coe. Outline of anterior portion of body, 

 .showing arrangement of ocelli. X 50. 



Fig. 153. A. similis. Outline of central .stylets and ba-ses in two individuals. 

 X 320. 



Fig. 154. Amphiporus bimaculatus Coe. Anterior portion of body, showing 

 position of ocelli and extent of cephalic and body markings 

 X 20. 



Fig. 165. A. bimaculatus. Outline of central stylet and basis. X 180. 



Fig. 156. A. bimaculatus. Basis of central stylet. X 180. 



Fig. 157. Amphiporus nebulnsus Coe. Outline of anterior portion of body 

 showing arrangement of ocelli. X 10. 



Fig. 158. A. nebulosus. Central stylet and basis. X 150. 



Fig. 159. Emplcctonema purpuratum Coe. Central stylet and basis. X 133. 



Fig. 160. E. purpuratum. Central stylet, showing longitudinal Hutings. 

 X 312. 



Fig. 161. Amphiporus Ivplai-dnlhiis (\\e. Outline of basis of central stylet. 

 X 312. 



