Figures 339-369 



All figures are last instar larvae, % life size. Size variations are due to different 

 degrees of maturity, disease, differing distention after death, etc. Figure 349 

 is ventral aspect. Figures 341, 343, 344, 347, 348, 351, 353, 355, 356, 357, 363, 

 and 367 are lateral aspect. All others are dorsal aspect. 



339. M. disstria, near St. Helena, California (Coll. 84A). Note tachinid egg 

 on head. 



340. M. disstria, near Garberville, California (Coll. 108). 



341. M. disstria, near St. Helena, California (Coll. 84A). 



342. M. tigris, near Garner St. Park, Texas (Coll. 223). 



343. M. tigris, near Garner St. Park, Texas (Coll. 223). 



344. M. tigris, near Anderson Jet., Utah (Coll. 264). 



345. M. constrictum constrictwn, near Bingen, Washington (Coll. 127). 



346. M. constrictum austrinum, near Santa Lsabel, California (Coll. 26), 

 para type. 



347. M. constrictum constrictum, Los Altos, California (Coll. 19). 



348. M. constrictum austrinum, near Santa Isabel, California (Coll. 26), 

 paratype. 



349. Atalacosoma sp., ventral aspect, showing conspicuous median black area 

 on each segment that may be found in all species. 



350. M. americanum, near Leakey, Texas (Coll. 227). 



351. AI. americanum, near Leakey, Texas (Coll. 227). 



352. M. californicum californicum, Petaluma, California (Coll. 13). 



353. M. californicum californicum, Petaluma, California (Coll. 13). 



354. M. californicum ambisimile, Morgan Hill, California (Coll. 40). 



355. M. californicum ambisimile, Morgan Hill. California (Coll. 40). 



356. 357. Intermediates between M. californicum californicum and M. cali- 

 fornicum ambisimile, near Los Altos. California (figure 356, Coll. No. 30A; 

 fig. 357, Coll. No. 20). 



358-363. Variations of color pattern in the Mendocino-Trinity population 

 of M. calif nicum. 



358. Near Geyserville, California (Coll. 97). Note lack of blue-white mid- 

 dorsal stripe. Compare with figure 370. 



359. Near Geyserville, California (Coll. 97). Much darker than figure 358 

 and closer to figure 352. 



360. Near Cloverdale, California (Coll. 62). Close to figures 364, 365. 

 361-363. Near Calpella, California (Coll. 103). Common color patterns 

 found in Mendocino-Trinity population. 



364. M. californicum recenseo, near Lake Tahoe, California (Coll. 149). Most 

 common color pattern. 



365. Af. californicum (central populations), near Dufur, Oregon (Coll. 128). 

 Most common color pattern in E. Oregon, SE. Washington, S. Idaho and 

 N. Nevada. Note similarity to figure 364, but the adults are differently colored. 

 Also note intermediate nature between figures 370, 371, and figures 383-389. 

 366-369. M. californicum fragile, showing variations which may be found. 

 See also figures 380-382. 



366. Near Tom's Place, California (Coll. 114). Note similarity to figure 362. 



367. Near Tom's Place, California (Coll. 1 14). 



368. Morongo Valley, California (Coll. 27). 



369. Morongo Valley, California (Coll. 27). 

 248 



