Most species of Taeniogyrus Semper, 1867 are known from shallow water in the Indo-Pacific, with other records in Antarctica, Mediterranean Sea, and the Atlantic. A new species of Taeniogyrus is described and illustrated here from the continental slope of Campos Basin, southeast of Brazil. In this species, sigmoid hooks (336-405 µm) are much larger than in any other in the genus, bearing a long ...

Small circular spots of light were focussed on otherwise unilluminated retinas of paralyzed fish. C~c~~~rnu bi~e~~tu~ The retinas were sub~uently examined histolo~cally, and a small circular region was found within which the cones and pigmented retinal epithelium were photomechanically tight adapted; rods could not be resolved. The same result was obtained with the optic nerve cut. The region w...

Juveniles of Contracaecum multipapillatum infected the Mayan cichlid (Cichlasoma urophthalmus) and adults infected the olivaceous cormorant (Phalacrocorax olivaceus) and the great egret (Casmerodius albus) in the coastal lagoon at Celestun, State of Yucatan, Mexico. All are new host records, and, even though the geographic locality record of Mexico for the species has not been published, uniden...