say " it is possible that Db. albisella Gill from Hawaii is 
the same as this species. The white bar (which is the only 
character separating the species) in the Hawaiian specimens 
{s quite large in the small examples(1 inch). and becomes 
gradually smaller in larger examples; in a c-inch example it 
extends only half as far down on the body as in the small(l 
inch) examples; we have no larger specimens of D, alibisella, 
but believe as the fish becomes larger, the Gaia ean smaller, 
and gradually disappear, In the specimen 6f D. trimeculatus 
4 3/4 inches long, the spot has ainest entareiy disappeerea’!9° 
In the Academy we find only one example of the alleged 
D. albisella from Oahu, long in alcohol and tnough in poor 
preservation, witn the broad white blotch on middle of side 
extending over at least 6 to 8 scales. It is aheut 35 in. 
long without the broken caudal. Of D. trimaculatus we ex- 
amined 3 adults, 90 to 95 mm, long, from Sumatra. These all 
nave the white spot on the arch of the lateral line; variable 
over 1 to 3 scales, even variably large or small on either side 
of the body, An examination of the scales shows no distinctive 
characters; basal radiating striae 7 to 9; apical denticles 80 
A ae oy 
195 
een OL aR eee renee or ON ee OT A A A A ea a TIT EO AO A AS TAT 
Mem.Mus ,.Comp.Zool.,vol.26,n0.27,1911,p.298, 
The Wilkes examples of D. reticulatus all agree with Bleek- 
er's figure, except they are generally darker, evidently due to 
their long preservation in spirits, 
