. Bulletin. Science. 124 SOUTHERN CALIFORNIA ACADEMY OF SCIENCES / / /. / / /{), ^ "^ \ BURROS no* 25* v\ Wa^%D* LAS P0CITAS ( xj^> / A FLORDT\ J?/1 /^>-^ MALVA \. <&J-~S 1 \ ^v V/ ' LA PAZ ^ Fig. 3. Type locality of Gobiesox juniperoserra. (Fig. 3). The average height above sea level varies from 30 to 60 m. This area is located between 24°28' and 24°52'N and 110°49' and 111°49'W. Climate is extreme, being the most arid of the semidry climates of the Peninsula, with a mean annual temperature ranging from 20 to 22°C, and rainy seasons, in summer and winter. The hydrologi
. Bulletin. Science. 124 SOUTHERN CALIFORNIA ACADEMY OF SCIENCES / / /. / / /{), ^ "^ \ BURROS no* 25* v\ Wa^%D* LAS P0CITAS ( xj^> / A FLORDT\ J?/1 /^>-^ MALVA \. <&J-~S 1 \ ^v V/ ' LA PAZ ^ Fig. 3. Type locality of Gobiesox juniperoserra. (Fig. 3). The average height above sea level varies from 30 to 60 m. This area is located between 24°28' and 24°52'N and 110°49' and 111°49'W. Climate is extreme, being the most arid of the semidry climates of the Peninsula, with a mean annual temperature ranging from 20 to 22°C, and rainy seasons, in summer and winter. The hydrologic basin of the area is reduced to a few small natural pools (=po- zas, origin of the generic name of the region). The creeks are located along two canyons that merge. Those located in the southern region merge directly or in- directly with a small river that goes to the Flor de Malva estuary, opening to the Pacific. Rivers to the north and west of the Mesa de Irai plain are joined with other small channels that occasionally reach the Punta Chale estuary opening into Bahia Almejas, at the lagoon system of Bahia Magdalena, Baja California Sur. The Pozas del Vado are a series of ponds watered by small springs. Their diameters range from two to six meters, with a depth from 20 to 50 cm. They remain isolated during the dry season, but become interconnected at the onset of the rains and give rise to the two rivers mentioned above. This ecological setting can be compared to some biotopes located in mainland Mexico, particularly in the states of Jalisco, Michoacan, Guerrero, and Oaxaca. The floor of these water bodies is composed of sand, gravel, and rocks. Toward the edges of the ponds, due to accumulation and decomposition of organic matter small muddy beaches are formed. Large rounded rocks of rhyolithic material located in the rivers are common. The aquatic vegetation collected in this locality is represented by the algae. Please note that these images are extracted from scann
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