XII LIST OP PITBLICATIONS. 



Page. 



Figs. 204r-211. — Ophiogomphus occidentis. 204. Color pattern. 205. Ha- 

 mules. 206-208. Male, appendages. 209. Vulva. 210. Female, occiput. 

 211. Appendages of a male from Corvallis, Oregon. 212-218. — Ophio- 

 gomphus occidentis calijornicus 541 



Figs. 219-223. — Ophiogomphus nymphs. 219. O. morrisoni. 220. 0. seve- 

 rus. 221. O. morrisoni nevadensis. 222. O. Mson. 223. O. occidentis 545 



Figs. 224-226. — Ophiogomphus bison, nymph. 224. Mentum. 225. Teeth 

 and setae on middle lobe of mentum. 226. Segments 6-10. 227-229.— 

 Ophiogomphns morrisoni. 230-232. — Ophiogomphus severus. 233- 

 235. — Ophiogomphus morrisoni nevadensis. 236-238. — Ophiogomphus 

 occidentis 546 



Figs. 239-243. — Ophiogomphus, dorsal spines of nymphs. 239. O, Hson. 

 240. O. occidentis. 241. O. morrisoni. 242. O. morrisoni nevadensis. 

 243. O. severus. 244-246. — Ophiogomphtis, lateral fringe on segment 

 7 of nymph. 244. O. morrisoni nevadensis. 245. 0. severus. 246. 

 0. morrisoni 548 



Figs. 247-249. — Gomphus intricatus. 250-251. — Gomphus olivaceus. 252- 



253. — Gomphus olivaceus nevadensis 551 



Figs. 254-262. — Gomphus intricatus. 254. Male, segment 2. 255-257. 

 Male, segment 10. 258. Segments 9-10 of female. 259. Female, occi- 

 put. 260-262. Male, left legs 553 



Figs. 263-271.— Gomp/i,«s olivaceus. 263. Jklale, segment 2. 264-266. 

 Male, segment 10. 267. Vulva. 268, Female, occiput. 269-271. Male, 

 left legs 556 



Figs. 272-280.— Gomp7ms sobrinus. 272. Male, segment 2. 273-275. 

 Male, appendages. 276-277. Vulva. 278. Female, occiput. 279-280. 

 Color pattern 560 



Figs. 281-289.— Gowp/ms donneri. 281. Male, segment 2. 282-285. Male, 

 appendages. 286. Vulva. 287. Female, occiput. 288-289. Color pat- 

 tern 564 



Figs. 290-293, 299-305. — Gomphus sobrinus. 290-293. Male, appendages. 

 299-305. Color variation. 294-278, 290-SOS.— Gomphus donneri. 294.- 

 298. Male, appendages. 306-308. Color variation 500 



Figs. 309-310. — Gomphus donneri. 309. Curve representing about 50 

 specimens. 310. Same curve as 309 reduced to periods of 10. 311- 

 312. — Gomphus sobrinus. 311. Curve representing about 50 specimens. 

 312. Same curve as 311 reduced to periods of 10 509 



Fig. 313. — Gomphus sobrinus, variations in the anal area in the male hind 



wings 569 



Fig. 314. — Gomphus olivaceus nevadensis, nymph. 315. — Gomphus intri- 

 catuSy nymph. 316. — Gomphus donneri, nymph. 317. — Gomphus sobri- 

 nus, nymph 571 



Figs. 318-320. — Gomphus olivaceus nevadensis, nymph. 318. Mentum. 

 319. Mental lobe. 320. Segments 8-10. 321-323.— Go?np/iws intricatus. 

 324-325. — Gomphus donneri. 326-328. — Gomphus sobrinus 573 



Figs. 329-341.— Oc/or/omp/iMS specularis. 329. Segment 2 of male. 330- 

 331. Male, appendages. 332-3.33. Male, appendages as applied to head 

 of female. 334. Female, segments 9-10. 335. Thoracic color in a 

 Pasadena, Cal., female. 336-339. Variation in color of segment 9 in 

 male. 340-341. Color pattern 578 



