BY J. DOUGLAS OGILBY. 13 
species having been designated specially by him as the type ; 
in addition to this his Thyrsoidea longissima (= Murena 
macrurus, Bleeke~) belongs to a totally different section of 
the genus according to the author’s own arrangement 
of the species. Taking these facts into consideration, I 
cannot see any valid reason for perpetuating Bleeker’s 
arbitrary action in selecting as the type of Thyrsoidea a 
species which, in the opinion of the original founder of the 
genus himself, was an aberrant or at the least a non-typical 
orm 
RHABDURA MACRURA. 
Murena macrurus, Bleeker, Nat. Tijdschr. Nederl. Ind., vii, 1854, p. 354 ; 
Anjer, Java—Giinther, Catal. Fish., viii, p. 127, 1870: Port Natal; 
Ceylon. 
Thyrsoidea longissima, Kaup, Catal. Apod. Fish., p. 82, 1856—id., Arch. f. 
Nat., xxii, 1856, p. 61 ; Sea of Hindoostan. 
Thyrsoidea macrurus, Bleeker, Atl. Ichth., iv, p. 111, pl . cLxvi, fig 2, 1864— 
Kner, Voy. Novara Fische p. 386, 1867. 
Murena macrura, Day, Fish. Ind., p. 672, pl. ctxx, fig. 5, 1878—id., Faun. 
Brit. Ind., i, p. 81, 1889, fig. 32. 
Barz. D493 circ.: A. 326 cire.; C. l2ere=D. + CL +. A. S21 
circ. (fide Bleeker). 
Depth of body at the gill-opening 134 in the space 
between the extremity of the snout and the vent and 38 
in the total length. Width of body about 2 of 
its depth. Length of head from snout to gill-opening 4 in 
the trunk and 14 in the totallength. Diameter of eye 24 in 
the length of the snout, which is 10+ in that of the 
head. Jaws not completely closng when the mouth 
is shut. Cleft of mouth extending about six diameters of 
he eye behind the eye, its length 22 in that of the head. 
Teeth in the upper jaw in two series, those of the outer 
series 20 or 21 in number and rather irregular in size, the 
fourth on each side being much the longest ; inner series con- 
sisting of 7 or 8 subequal teeth, which are uniformly longer 
than those of the outer series and are situated opposite to 
the vomerine band ; a median series of 4 teeth*, which in- 
creases in size from the front of the premaxillary ; vomer 
with a single row of about 8 small teeth ; mandibular teeth 
Perhaps 5, since there is a considerable interval between the third 
and fourth. 
