116 
Bull. U. S. Nat.-Mus., No. 54, 1905, figs. p. 580). The body is 
curved ventrally and consists of cephalon and 12 segments. There 
is no trace of an eye. The Ilst antenna is small, short, bud-like, 
Fig. 19. Holophryxus Acanthephyræ, larva. 
Ventral and dorsal view. The pereiopoda and pleopoda are removed 
(the shaded parts). 
apically acuminated and with a spine on the outerside. 2nd an- 
tenna is about as long as the body, three-articulated, and has some 
small spines (see the fig:). 
Through the oral cone the 
mandibles are visible. At 
each side of the oral cone 
a gnathopod is seen of about 
the same form as the per- 
eiopoda of the adult animal. 
Gnathopoda of this form are 
to be found in the Crypt- 
oniscian-stages of the Da- 
jidæ, but they are never 
Fig. 20. Holophryxus Acanthephyræ, found in other larvæ of Da- 
larva. Lateral view a little from below. jidæ of. the stage figured; 
this does not prove that they do not exist in the othér known 
larvæ, but they are, even with the excellent preparation made. by 
