OBS. The _Ammodytes cicerelus_ of my friend Professor Rafinesque must be different from _A. siculus_ * * * * * AMMODYTES Siculus. _Sicilian Sand-Lance._ _A. pinna dorsali sinuata, in medio angustata, pone anum altiore._ Dorsal fin sinuated, narrowed in the middle and broadest behind. * * * * * Of this genus, hitherto considered as possessing only a unique example, we were fortunate in discovering while in Sicily the new species now figured, and which early in the year visit the coasts near Palermo and Messina in prodigious quantities. There is no striking difference between this and _A. Tobianus_, excepting the extraordinary shape of the dorsal fin, which is invariably undulated and narrowed in the middle. It never grows to a size exceeding the figure, and is usually much less; while the British species is often found double the length. Like that, also, _A. Siculus_ has the lateral line running close to the dorsal fin; for the fine line in the middle of the side, as Lacepede has well observed, is that only which connects the muscles. That author likewise mentions, that the jaws in _A. Tobianus_ have minute teeth, but these I could never discover. The rays of the fins are, pect. 16; dorsal 56; anal 30. * * * * * AMMODYTES Tobianus. _Common Sand-Lance__--upper figure._ * * * * * _A. pinna dorsali lineari, aequali._ Dorsal fin linear, equal. _Linn. Syst. Nat. vol._ i. _p._ 1145. _Pennant_ iv. _pl._ 28. _Bloch, pl._ 73. 2. _Lacepede_, ii. 275. _Klein Hist. Pisc. fasc._ iv. _tab._ 12. _f._ 10. * * * * * This, though a very common fish, has been figured by all authors as if the rays were spined and naked at their extremity; they are, on the contrary, soft and connected. It abounds at certain times on many parts of our coasts. The number of rays stand thus: Pectoral 12; dorsal 51; anal 27. * * * * * Pl. 64 [Illustration] MACROGLOSSUM assimile. * * * * * GENERIC CHARACTER. _Antennae subfusiformes, sursum versus sensim crassescentes, apice unco brevissimo gracili incurvato abrupte terminato, in maribus sub-barbatae, in foeminis simplices et graciliores. Palpi porrecti, crassi, articulo ultimo acuto. Alae opacae, integrae. Abdomen crassum, barbatum._ Typus Genericus _Sphinx stellatarum_. Linn. Antennae subfusiform, gradually thickest towards the end, the tip abruptly terminating in a very short slender incurved hook; ciliated in the male, simple and more slender in the female. Palpi porrected, thick, the last joint pointed. Wings opaque, entire. Abdomen thick, bearded. Generic Type _Sphinx stellatarum_. Linn. * * * * * SPECIFIC CHARACTER.