6 



Psyche 



[February 



The clypeus on the right side has the lateral extension characteris- 

 tic of the male and the same type of frontal carina, whereas the 

 left frontal carina is prolonged backward as in the soldier (Fig. 

 2^) but does not border so deep a scrobe-like depression. In the 

 soldier the head is ferruginous or yellowish-red, with its posterior 

 third infuscated, but in the male entirely black. In the diner- 

 gatandromorph the infuscation extends much further forward 

 between the frontal carinse and onto the right side. There are no 



Fig. 2. Camponoius (Colobopsis) albodnctus Ashmead. a, head of male; b, of 

 soldier; c, of dinergandromorph. 



traces of ocelli. As the thorax, petiole, gaster and legs are in all 

 respects like the corresponding parts of a normal though small 

 soldier the internal reproductive organs are, in all probability, those 

 of a normal soldier, i. e. of the abortive female type. 



I have not seen the worker of C. alhocinctus but there can be no 

 doubt that as in other species of the subgenus it has a small head, 

 more rounded, less rectangular and narrower in front than in the 

 soldier, with less convex mandibles and the clypeus shaped more 

 as in the male. The species of Colobopsis are peculiar in having 

 sharply marked soldier and worker forms, whereas in other sub- 



