Orbital length / | 081 | 083 | 078 Standard length | (075-085) | | (076-084) | | | Orbital length / | 296 | 267 | 261 Head-length | (271-313) | | (255-273) ------------------------+--------------+----------------+----------------- =_Campostoma anomalum plumbeum_ × _Semotilus atromaculatus_=: KU 4013 (three males, 86.0 to 96.0 mm. in standard length, mean 89.5 mm.) from Timber Creek, Scott Co., Kansas, Sec. 2, T. 16S, R. 33W, June 19, 1958. Compared in Table 3 with five specimens of _C. a. plumbeum_, KU 4034 (85.7 to 93.1 mm., mean 90.2 mm.) from the Smoky Hill River, Wallace Co., Kansas, Sec. 26, T. 13S, R. 39W, June 20, 1958; and with five specimens of _S. atromaculatus_, KU 4012 and 4047 (85.0 to 97.5 mm., mean 91.7 mm.) from the same locality and of the same date as KU 4013 (above), and Sappa Creek, Decatur Co., Kansas, Sec. 29, T. 2S, R. 28W, June 23, 1958, respectively. This hybrid combination has previously been recorded by Johnson (1945). TABLE 3. COMPARISONS OF THREE SPECIMENS OF CAMPOSTOMA ANOMALUM PLUMBEUM × SEMOTILUS ATROMACULATUS WITH SPECIMENS OF THE PARENTAL SPECIES (MEANS ARE ABOVE, RANGES IN PARENTHESES BELOW) =====================+=================+===============+================= | _Campostoma a._ | KU 4013 | _Semotilus_ | _plumbeum_ | (three spec.) | _atromaculatus_ ---------------------+-----------------+---------------+----------------- Standard lengths | 90.2 | 89.5 | 91.7 | (85.7-93.1) | (85.7-96.2) | (85.0-97.5) | | | Predorsal length / | 511 | 533 | 557 Standard length | (505-517) | (523-542) | (547-564) | | | Head-length / | 251 | 276 | 289 Standard length | (244-258) | (273-278) | (280-299) | | | Snout-length / | 090 | 088 | 085 Standard length | (086-096) | (087-091) | (082-087) | | | Orbital length / | 044 | 048 | 049 Standard length | (043-045) | (047-049) | (048-050) | | | Interorbital width / | 075 | 094 | 110 Standard length | (073-078) | (091-099) | (104-113) | | | Distance from tip of | | | mandible to tip of | | | maxillary / | 057 | 076 | 098