. Bulletin. Science; Natural history; Natural history. CALLOPLAX THIELE. 1909. IN THE AMERICAS 57. Fig. I. Calloplax janeirensis (Gray. 1828). lectotype. Rio de Janeiro. Brazil (BMNH 197741). Length. mm. Fig. 2. Cciltoplax vivipunis (Plate. 1902) [ = "Chiioiijaiieiieiixis ()" Gray, 1828]. Valparaiso. Chile (BMNH 197742). Length. mm. Calloplax janeirensis (Gray ,1828) Figures 1 and 3 Chiton janeirensis Gray, 1828:6 [reference is made, erroneously, to pi. 6, instead of pit. 3, both unpublished but on file at BMNH. teste A. Blake //; ////.. May 16, 1977]. Calloplax janeir
. Bulletin. Science; Natural history; Natural history. CALLOPLAX THIELE. 1909. IN THE AMERICAS 57. Fig. I. Calloplax janeirensis (Gray. 1828). lectotype. Rio de Janeiro. Brazil (BMNH 197741). Length. mm. Fig. 2. Cciltoplax vivipunis (Plate. 1902) [ = "Chiioiijaiieiieiixis ()" Gray, 1828]. Valparaiso. Chile (BMNH 197742). Length. mm. Calloplax janeirensis (Gray ,1828) Figures 1 and 3 Chiton janeirensis Gray, 1828:6 [reference is made, erroneously, to pi. 6, instead of pit. 3, both unpublished but on file at BMNH. teste A. Blake //; ////.. May 16, 1977]. Calloplax janeirensis Thiele, 1909:19. pi. 2, figs. 57-65—Kaas. 1972:60-65, text figs. 117-123. pi. 4, figs. 1, 2 (with synonymvl—Rios. 1970:142: 1975:267, pi. 88, fig. 1288. Type material.—Lectotype and paralectotype, BMNH 197741. Type locality.—R'\o de Janeiro, Brazil [22°54'S. 43°15'W]. Thanks to the cour- tesy of Aileen Blake, Mollusca Section, Department of Zoology, British Museum (Natural History), I had the opportunity of examining the type lot which consists of two specimens preserved dr\ and fulh extended. Both specimens, light tan in color, are in fair condition and show indications of having been glued to card- board. The larger specimen (Fig. 1), here designated as lectotype, measures mm in length, mm in width, including girdle. The smaller specimen, a paralectotype, measures mm in length. Ihe lectotype has 12 strong granose radial ribs on the anterior valve; the posterior valve has a ccniral nuicio. granose radial ribs in the poslmucro area: the intermediate valves ha\e well defined lateral areas with 3 or 4 coarsely granose radial ribs, and central areas with about 12 somewhat beaded longitudinal riblets per side, which tend to con- verge anteriorly and become obsolete at the Jugum. The girdle Feattues. obliter- ated by dust and deca\. are (.liffictilt to ascertain except for the presence of mikiH imbricated scales and the probable remnant of an
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