1950] 
Wheeler — Ant Larvae 
109 
have a very wrinkled integument. This latter causes me to suspect 
that they have been dried out and later relaxed. At any rate, they 
do not differ otherwise from the larvae described above. Hence I 
conclude tentatively that the branching may be an artifact due to 
dessication. Dimorphic larvae are extremely rare among the Form- 
icidae. Without better evidence I would not wish to consider the 
larva of this species dimorphic. 
Whether dimorphic or not, Lioponera larvae are still the queerest 
of the cerapachyines. Their hooked hairs and their short broad 
mandibles make them decidely atypical. 
The only reference to the larva of Lioponera in the literature 
refers to the absence of vestigial legs in L. luzuriagae (G. C. 
Wheeler, 1938, p. 140). 
Text figure 2 . — Acanthostichus serratulus. a, nearly mature larva; b, 
head enlarged, in profile; c, same in dorsal (sic!) view; d, mandible 
greatly enlarged, viewed obliquely from the side. (After Emery, 1899) 
Tribe Acanthostichini Emery 
Genus Acanthostichus Mayr 
I have seen no larvae of this genus and hence must be content 
with Emery’s description (1899, p. 4) and figures (PI. 2, figs. 5 
