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Six marine species and a single freshwater species of'clingfish are reported from collections made by the authors in Belize and Honduras, Central America, during the period 1970 through 1980. Acyrtops amplicirrus Briggs,Acyrtus rubiginosus (Poey), and Gobiesox barbatulus Starks are reported for the first time from the western Caribbean and Gobiesox nudus (Linnaeus) is recorded for the first time from Honduras. Acyrtops amplicirrus is tentatively recognized as distinct from A. beryl/ina (Hildebrand and Ginsburg). Gobiesox barbatulus Starks is distinguished from G. strumosus on the basis of development of barbels on the preand suborbital areas, fringing of the dermal flaps on the anterior nostrils, and more numerous and narrow lines radiating from the eye in the case of G. barbatulus. Principal components analysis of 13 morphometric characters resulted in clear separation of the two forms along the first component axis. Both species are mainland forms occurring in turbid and often brackish water. Gobiesox barbatulus is a southern form occurring from Brazil to Belize, G. strumosus is a northern form occurring from Campeche, Mexico to Virginia. The apparent distributional boundary (centered on east coast of the Yucatan Peninsula, Mexico) between the two agrees with the boundary between the northern and southern continental shorefish faunas recognized by Robins (1971) and Gilbert (1973). This paper is an annotated listing of clingfishes known from Belize and the Caribbean coast of Honduras, Central America. Results are based on ten years (1970-1980) of collecting in Belize and 31 collections in northern Honduras (Miskito Coast Expedition, 1975, see Greenfield and Johnson, 1981). Of 13 shallow-water2 clingfish species (five 1Contribution Number 55 from the Investigations on Marine Shallow Water Ecosystems Program of the Smithsonian Institution, Washington, D.C. 2Not including Derilissus or Gymnoscaphus. 33 genera) known from the western Atlantic, six species (four genera) are represented in our collections. A seventh species from freshwater in Honduras also is represented. Available information on habitat association, depth, and geographic distribution is presented for each of these seven species. We have also included revised descriptions for Gobiesox barbatu/us and G. strumosus Cope, forms we believe to be separate. Evidence for this conclusion is presented and discussed. Localities and collecting methods used in our continuing study of the Belize 1 Johnson and Greenfield: Clingfishes (Gobiesocidae) from Belize and Honduras, Central Amer Published by The Aquila Digital Community, 1983 34 R.K. Johnson and D.W. Greenfield shorefish fauna are detailed in Greenfield and Johnson (1981 ), except for localities visited since completion of that work. In all we have obtained nearly 400 marine collections from Belize in ten years of work, but clingfishes were represented in only a small fraction of that total.

Clingfishes (Gobiesocidae) from Belize and Honduras, Central America, with a Redescription of Gobiesox barbatulus Starks