2 Psyche [February 



in possessing two forms of females, one, which we called the 0- 

 female, being reddish-yellow, with long golden pile, large, flattened 

 femora and tibiae, short, slender tarsi and incrassated antennae; 

 and one, which we called the a-female, of a darker color and inter- 

 mediate in structure and pilosity between the j3-female and the 

 female of L. claviger Roger. ^ The gynandromorph taken at 

 Colebrook is ev^dently a combination of the male and /3-female. 

 These phases, when they appear as separate individuals measure 

 respectively 4 and 8 mm., and could hardly be combined to form a 

 viable lateral gynandromorph, so that it is probably for this reason 

 that the specimen, as will appear from the description and figure, 

 is of a different type. Unfortunately I did not have access to a 

 dissecting microscope till the specimen had become so thoroughly 

 hardened in the alcohol that I despaired of gaining any satisfac- 

 tory knowledge of its internal reproductive organs. The gynan- 

 dromorphous C. alhocinctus was found among a small series of 

 dried and mounted specimens collected for me in 1917 by Dr. F. X. 

 Williams at Los Banos, near Manila. The following detailed 

 descriptions and the figures will give an idea of the external pe- 

 culiarities of the two specimens, 



Lasius (Acanthomyops) latipes Walsh (Fig. 1) 



Gynandromorph. Length 8 mm., being that of the normal 

 j3-female, but with the thorax and gaster more slender. Head 

 shaped like that of a normal female, but with the eyes and ocelli 

 much larger and more prominent, the right posterior ocellus smaller 

 than the left and the surface black, with isolated, reddish-yellow 

 spots as indicated by the less densely stippled areas in the figure. 

 Left mandible of the female type, reddish-yellow, smooth, shining, 

 sparsely punctate; right mandible black, like the left in form and 

 size but subopaque and very finely longitudinally striolate as in 

 the male. Clypeus with somewhat more than its right half red- 

 dish-yellow (female), the remainder black (male). Antennae both 

 alike, black, 13-jointed (male) and with slightly swollen first 

 funicular joint but stouter than in the male, in form only slightly 

 approaching the female, as in normal individuals of this sex the 

 scape is incrassated distally and the funiculus is spindle-shaped, 

 with very broad and transverse joints in the middle. The surface 



' These females are figured in the paper cited and in my ant book (Fig. 55 B and C, p. 94) . 



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