1931 ] 
Ant Gynandromorphs 
83 
oak log on a sand-dune on Point Pelee Island, Ontario, in 
Lake Erie, and are remarkably alike, having black heads 
of the male type, though the antennas are 12- jointed, except 
in one specimen which has the left antenna 13- jointed. The 
thorax and abdomen in all of them is pale brownish-yellow, 
like the color of callow workers. In two the genitalia are 
purely female, with small though normally developed sting ; 
in the other a similar sting is combined with male genitalia 
appendages! Since the only known males of P. Pennsyl- 
vania are of the usual winged type with the body black 
throughout, we must regard Professor Kennedy's specimens 
as anteroposterior gynandromorphs. The specimen with 
hermaphrodite external genitalia is obviously intermediate 
between such a form as the normal ergatomorphic male of 
P. eduardi , which has a head of the male type with 13- 
jointed antennse, and the two other specimens with exclu- 
sively worker abdomen and developed sting. The suppres- 
sion of the sting in the former specimen would convert it 
into an ergatomorphic male, and if its testes were suffi- 
ciently developed it would be essentially like the normal 
ergatomorphic male of P. eduardi. 
III. Additions to the List of Known Ant Gynandromorphs 
In 1929 Donisthorpe listed the known ant-gynandro- 
morphs and gave their number as 49. Vandel has elimi- 
nated from this list Santschi's Cataglyphis as a doubtful 
case (Donisthorpe included only one of the three cases 
mentioned in Santschi's paper), and has added the two 
peculiar Myrmica ruginodis Nyl. gynandromorphs described 
by Emery in 1924 (overlooked by Donisthorpe) and his 
Pheidole dinergatandromorph, thus making the total num- 
ber of known ant gynandroromphs 51. Donisthorpe, how- 
ever, omitted a Cardiocondyla gynandromorph described 
by Swezey in 1926. I have examined this insect in the 
collection of the Hawaiian Sugar Planters' Experiment Sta- 
tion and have found it to belong to C. wroughtoni Forel 
var. hawaiiensis Forel, and not to C. nuda minutior 
Forel, as Swezey supposed. The specimen, which was taken 
in a compost heap in the garden of the Experiment Station 
at Honolulu, is a normal female, except that the left eye 
is decidedly larger and the left antenna of the male type 
