109 Ittinoz3 Natura History Survey BULLETIN Vol. 26, Art. 1 
25. AMELETUS Eaton has a slightly oblique, contrastingly colored 
band extending across the outer surface, 
Ameletus Eaton (1835: 210). fig. 235. This band is visible only in freshly 
In the members of this genus, each com- _ killed or living specimens, as the color pat- 
pound eye, in both the males and females, tern of the eyes quickly disappears after 
ed 
2278 228A 228B 228C 
Fig. 223A —Siphlonurus marshalli, gill of frst abdominal segment. 
Fig. 223B.—Siphlonurus marshalli, gill of seventh abdominal segment. 
Fig. 223C.—Siphlonurus marshalli, gill of fifth abdominal segment. 
Fig. 224.—Siphlonurus alternatus, gill of fifth abdominal segment. 
Fig. 225A .—Isonychia sp., gill of first abdominal segment. 
Fig. 225B.—I sonychia sp., gill of seventh abdominal segment. 
Fig. 225C.—IJ sonychia sp., gill of fifth abdominal segment. 
Fig. 226A .—Callibaetis skokianus, gill of first abdominal segment. 
Fig, 226B.—Callibactis skokianus, gill of seventh abdominal segm=nt. 
Fig. 226C.—Callibactis skokianus, gill of fifth abdominal segment. 
Fig. 227A .—A meletus lineatus, gill of first abdominal segment. 
Fig. 227B.—A meletus lineatus, gill of seventh abdominal segment. 
Fig. 227C.—A meletus lineatus, gill of fourth abdominal segment. 
Fig. 228A.—Baetis brunneicolor, gill of first abdominal segment. 
Fig. 228B.—Baetis brunneicolor, gill of seventh abdominal segment. 
Fig. 228C.—Baetis brunneicolor, gill of fourth abdominal segment. 
