. Bonner zoologische Monographien. Zoology. 31 NEUROMAST LINES Neuromast lines may consist of single neuromasts located at the bottom of shallow pits (pit hnes), in grooves of the epidermis (groove hnes), or enclosed in canals (canal lines) (Northcutt 1989:19). Superficial neuromasts are aligned in several lines on the dorsal and lateral part of the head in siluroids (). For instance: 1) Fork replacement of supraorbital canal of Coombs et al. (1988); it has been termed rostral line or nasal line by various authors. - This hne () is the continuation of the supraorbital canal anterio
. Bonner zoologische Monographien. Zoology. 31 NEUROMAST LINES Neuromast lines may consist of single neuromasts located at the bottom of shallow pits (pit hnes), in grooves of the epidermis (groove hnes), or enclosed in canals (canal lines) (Northcutt 1989:19). Superficial neuromasts are aligned in several lines on the dorsal and lateral part of the head in siluroids (). For instance: 1) Fork replacement of supraorbital canal of Coombs et al. (1988); it has been termed rostral line or nasal line by various authors. - This hne () is the continuation of the supraorbital canal anterior to the nasal bone, it lies medial to the fork replacement of the infraorbital canal. It is formed by a variable number of neuromasts placed anteromedial to the anterior nasal opening. It occurs in some catfishes (see below). 2) Rostral fork replacement of the infraorbital canal of Coombs et al. (1988); it is named rostral hne, rostral commissure, or ethmoidal commissure by varios authors. - This line () is a continuation of the infraorbital sensory canal as already noted by Lekander (1949) for cypriniforms, Branson & Moore (1962) for centrarchids, Nybelin (1967) for coregonids, and Coombs et al. (1988) for different fishes. A rostral fork replacement of the infraorbital canal formed by a variable number of superficial accessory trunk line. I ventral opercular line subventral trunk line ventral mandibular line | dorsal mandibular line : Diagrammatic representation of the lateral line canals and superficial neuromast lines in siluro- ids. info: infraorbital canal; : body lateral line; mc: mandibular canal; otc: otic canal; prec: preopercular canal; potc: postotic or temporal canal; sobc: supraorbital Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bonn, Zoologisches Forschungsins
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