A GYNAMDROMORPH OF MONOMORIUM FLORICOLA, JERD. 217 
A Gynandromorph of Monomorium floricola, Jerd. 
By W. C. CRAWLEY, B.A., F.E.S. . 
Jn 1903 Wheeler published a list of all the known cases of 
Gynandromorphs among ants, with descriptions of six more, which 
brought the total to 23, and in 1914 the same author gave an account 
of seven additional ones described during the decade 1908-138, these 
bringing the total up to 80. In 1915 Donisthorpe gave a list with a 
description of two gynandromorphs of Myrmica scabrinodis, Ny]. 
These, together with one of Monomorium floricola, Jerd., and Formica 
rufibarbis, F., described by Donisthorpe previously in 1914 and 1915 
respectively, brought the total to 34. Recently Santschi (1920) pub- 
a note, ‘‘ La 39me. Fourmi hermaphrodite,’ with a list of four 
described since Donisthorpe’s 1915 paper, viz., Phyracaces singaporensis, 
Viehm., Myrmica rugulosa, Nyl., Acanthomyops latipes, Walsh., and 
Camponotus (Colobopsis) albocinctus, Ash., and added a fifth, Tetra- 
morium simillimum, Sm. He overlooks, however, three cases described 
by Donisthorpe, viz., Myrmica laevinodis, Nyl. (1917), M. lacvinodis var. 
ruginodo-laevinodis, For. (1918), and M. sulcinodis, Nyl. (1919). The 
total, therefore, at the date of Santschi’s paper was 42, not 39. 
Among the collections of the late Dr. H. Swale, from Samoa, is a 
gynandromorph of Monomorium floricola, Jerd., the second from 
Samoa found by Dr. Swale (the other being the Tetramorium similli- 
mum described by Santschi), and the second of the species to be 
described. As will be seen, however, from a comparison of the two 
descriptions, the new specimen, which brings the list to 48, is quite 
different from the former, since, though a lateral gynandromorph, the 
thorax is entirely g in shape. 
Description.—Length 38mm. (normal ? found in same colony 
measures 3.6mm., and a normal 2.8mm.). 
Colour more or less that of a 3 (though slightly paler), except the 
gaster, which is coloured more like that of a 9, z.e., less dark than in 
the g. The left side (viewed from behind) of the postpetiole is paler 
than the right side. 
Head.—Lett side, including the four-toothed mandible, the clypeus, 
the compound eye and left ocellus, 2, but the whole side of head is 
shorter than anormal ? head; left antenna ¢?, but both scape, 
funiculus, and joints of funiculus in proportion to their width, shorter 
than normal. Right side ¢, the mandible and right half of the 
clypeus being somewhat distorted; compound eye, right and centre 
ocelli g ; right antenna 3’, size normal. 
Thorax, including legs, epinotum and pedicel, 3; the left side of 
2nd node more developed than the right. Gaster almost entirely 3, 
though the left side of first segment is more ? in form, and the left 
side of apex is 9. Wings normal. 
The right side of the apical segments contains a perfectly formed 
and quite normal half of a g genital armature. The dried state of 
the body rendered it impossible to examine the gaster for @ organs. 
Sculpture.—Clypeus more finely striated, and rather less so than in 
the g. The g side of head has normal 3 sculpture, and the @ side 
normal ? sculpture. The rest of sculpture 9. 
Lotopa, Samoa, April 29th, 1917 (H. Swale). 
Decemeber, 1920. 
