COLLEMBOLA OF THE FAMILY ISOTOMIBAB 135 



Proisotoma (Proisotoma) obsoleta: 



226. Claws, X 785. 



227. Eight mucro, X 850. 



228. Dorsal setae of mesonotum, X 673. 

 Proisotoma (Proisotorna) vesiculata: 



229. Eyes and postantennal organ of right side, X 400. 



230. Sense organ of third antennal segment of right side, X 1,067. 



231. Left hind foot, X 673. 



232. Left aspect of furcula, X 247. 



Plate 22 

 Proisotoma (Proisotoma) vesiculata: 



233. Left mucro, X 757. 



234. Right mucro, X 757. 



235. Dorsal setae of first abdominal segment, X 443. 



236. Surface view of reticulate cuticula of an intersegmental membrane, 



X 2,040. The rows are transverse. 



237. Reticulate cuticula of an intersegmental membrane in transverse 



section, X 2,040. 

 Proisotoma (Proisotoma) bulbosa: 



238. Eyes and postantennal organ of right side, X 450. 



239. Eyes and postantennal organ of right side, X 450. 



240. Sense organ of third antennal segment of right side, X 1,200. 



241. Left hind foot, X 757. 



242. Left mucro, X 1,192. 



243. Dorsal aspect of right mucro, X 1,192. 



244. Dorsal setae of second abdominal segment, X 690. 

 Proisotoma (Proisotoma) aquae: 



245. Eyes and postantennal organ of left side, X 735. 



246. Eyes and postantennal organ of left side, with pigment patches, X 757. 



Plate 23 

 Proisotoma (Proisotoma) aquae: 



247. Left postantennal organ, X 1,260. 



248. Sense organ of third antennal segment of left side, X 1,260. 



249. Pit and sensory papilla, in a radial section of third antennai segment of 



right side, X 2,400. 



250. Left hind foot, X 1,237. 



251. Right mucro and end of dens, X 1,102. 



252. Dorsal setae of second abdominal segment, X 375. 

 Proisotoma (Proisotoma) decemoculata: 



253. Eyes, ocular pigment, and postantennal organ of right side, X 757. 



254. Right hind foot, X 1,190. 



255. Left mucro, X 1,190. 

 Proisotoma (Proisotoma) simplex: 



256. Left postantennal organ and adjacent eyes, X 757. 



257. Right hind foot, X 757. 



258. Left mucro, X 1,200. 

 Proisotoma (Proisotoma) tencUoides: 



259. Right postantennal organ and adjacent eyes, X 757. 



260. Left hind foot, X 1,139. 



261. Left mucro and end of dens, X 1,185. 



