31. Another is the presence of a specially formed sclerite ( hardened plate ) called a vomer that allows the male to clasp the female during mating. 32. The vomer of " T . alexandrae " has two rows of teeth closely set anteriorly and divergent posteriorly with 10 teeth per row. 33. Sawtooth eels get their name from the saw-like arrangement of inward-slanting teeth attached to the vomer bone in the roof of the mouth. 34. Sawtooth eels get their name from the human-like arrangement of inward-slanting teeth attached to the vomer bone in the roof of the mouth. 35. There is a broad band of teeth in both jaws, with the outer row enlarged, and a curved or chevron shaped band on the vomer . 36. They differ in " Dischidodactylus " possessing a dentigerous process of the vomer , and in " Ceuthomantis " lacking basal toe webbing. 37. In bony fish, the vomers are flattened, paired, bones forming the anterior part of the roof of the mouth, just behind the premaxillary bones. 38. The vomer of " T . borealis ", on the other hand, has six high, triangular teeth that are fused to the bone. 39. The vomer of " T . borealis " also differs from the vomer of " T . alexandrae " in the type of dentition present. 40. The vomer of " T . borealis " also differs from the vomer of " T . alexandrae " in the type of dentition present.