312 



Margaret Holliday. 



The queen has tlie typical prothorax; tlie mesonotiim, tegulae. 

 paraptera. scutellum and sternite of the mesothorax are distinct; 

 tlie epimerite and episternite of the mesothorax have fiised. In the 

 metathoracic segment the metanotura and epimerite are distinct, the 

 episternite and epinotum have fnsed. The orifice of the scent gland 

 is located in this segment. 



The ergatoid has a slight demarcation between the pro- and 

 meso-notum. The position of the epinotum is slightly indicated by 

 a faint suture. The eyes are large, composed of hirge, regularilly 

 arranged facets, sixty-four in number. Three small ocelli are present 

 (Fig. J). 



Fig. J. 



Cremastogasfer minutissima Mayr. 



Ergatoid feniale. 



The foUowing table shows the relative size of the different parts 

 of the queen and ergatoid form : 



Form 



Head 



Length of 

 Thorax 



Abdomen 



Thoracic 

 Thickiies^^ I Width 



Queen 

 Erg-atoid 



1.2 



3.1 

 2.1 



1.1 



.6 



One of the ergatoid forms was dissected to determine the con- 

 dition of the ovaries. The}' were in an undeveloped State; no eggs 

 were present in the Single tubules. 



The queens have four tubules to eacli ovary, two on each side. 

 One is much larger than the other and contains larger eggs; several 

 eggs are present in each tubule. 



The workers have only one tubule on each side, small and 

 undeveloped; eggs are present in very few of them and are not 

 niature. 



