. Report of the Commissioner - United States Commission of Fish and Fisheries. inoau8, until adequate series can be compared. Raport U. S. F. C. 1893. Ichthyological Collections (To face page 448.) Plate 31,. ICHTHYOLOGICAL COLLECTIONS OF THE ALBATROSS. 449 LETHOTREMUS gen. nov. (CYCLOPTERIDJE.) Differing from Eumicroiremus in the total absence of the bony plates and in theabsence of pores on sides of head or body. 109. Lethotremus muticus sp. nov. (Plate 31.) Represented by three young specimens, the largest 30 mm. long. They closelyresemble in form, fin-rays, and general appearance Eumicrotr
. Report of the Commissioner - United States Commission of Fish and Fisheries. inoau8, until adequate series can be compared. Raport U. S. F. C. 1893. Ichthyological Collections (To face page 448.) Plate 31,. ICHTHYOLOGICAL COLLECTIONS OF THE ALBATROSS. 449 LETHOTREMUS gen. nov. (CYCLOPTERIDJE.) Differing from Eumicroiremus in the total absence of the bony plates and in theabsence of pores on sides of head or body. 109. Lethotremus muticus sp. nov. (Plate 31.) Represented by three young specimens, the largest 30 mm. long. They closelyresemble in form, fin-rays, and general appearance Eumicrotremus orbis, but differ, inaddition to the generic characters already stated, in the much larger eye, the lowerspinous dorsal, and the extreme reduction of the posterior nasal tube. In youngspecimens of E. orbis, the posterior nasal tube is much longer than the anterior, andequals half the diameter of the eye. In L. muticus both tubes are short and theposterior is little more than an elevated rim to the nasal opening. Dorsal vii-11; anal 10; pectoral 23. Depth 2 to 2^ in length; head 2| to 2|. Eyevery large, 21 to 2^ in head, equaling interorbital width. In E. orbis of equal sizethe length of the slit
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectfisheri, bookyear1895
