. Bulletin of the Natural History Museum (Zoology). 192 GILL AND R. FRICKE (1977) were also found in the Congrogadinae, and were thus synapomorphies of the two subfamilies: absence of palatine teeth; lower gill rakers fewer than seven; bead scaleless or with scales confined to the cheek and/or operculum; and gill membranes fused. In 1995, the first author and associates made collections of shorefishes from Mauritius. Included among the collections was a single specimen of an undescribed Anisochromis, which had a coloration pattern similar to A. kenyae, but with meristic characters more cl
. Bulletin of the Natural History Museum (Zoology). 192 GILL AND R. FRICKE (1977) were also found in the Congrogadinae, and were thus synapomorphies of the two subfamilies: absence of palatine teeth; lower gill rakers fewer than seven; bead scaleless or with scales confined to the cheek and/or operculum; and gill membranes fused. In 1995, the first author and associates made collections of shorefishes from Mauritius. Included among the collections was a single specimen of an undescribed Anisochromis, which had a coloration pattern similar to A. kenyae, but with meristic characters more closely resembling A. straussi. A search of museum collec- tions re\ ealed a small juvenile specimen of the same species collected by Randall from the adjacent island of Reunion. In 1998, the second author made collections of shorefishes from the latter island, including nine specimens of the new species. However, he misidentified them as A. kenyae and recorded them as such in a checklist of the fishes of the Mascarene Islands (Fricke, 1999).. MATERIALS AND METHODS Institutional codes follow Leviton etal. (1985). All measurements to the snout tip were made to the midanterior tip of the upper lip. Length of specimens are given in mm standard length (SL), which was measured from the snout tip to the middle of the caudal peduncle at the vertical through the posterior edge of the dorsal hypural plate. Head length was measured from the snout tip to the posteriormost edge of the opercular membrane. Snout length was measured over the shortest distance from the snout tip to the orbital rim, without constricting the fleshy rim of the latter. Orbit diameter was measured as its fleshy horizontal length. Interorbital width was measured as the least fleshy width. Upper jaw length was measured from the snout tip to the posterior edge of the maxilla. Predorsal, preanal and prepelvic lengths were measured from the snout tip to the base of the first spine of the relevant fin. Body width was
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