new Ants from Auslr<iJia. 429 



}fijrmtcia lute A, sp. n. 



5 . Length 15-20 mrn. (without mandibles) ; length of 

 niandjhles in largest si)ccitncns .'J'9 mm. 



Antenna*, tliorax, legs, and petiole obscure yellow-ochre in 

 colour ; mandibles, except teeth which areti|)[)cd with black, 

 a blighter yellow. Head dark chocolate-brown, sometimes 

 nearly black ; gaster black or, at least, very dark brown. 



Very slender, similar in form to gracilis, Em. Head 

 small, narrowing considerably behind eyes, smaller and with 

 more rounded angles than in nigriceps, Mayr (which it 

 reseml)les somewhat in colour). The head is narrower 

 behind than in either v'uidex or nigriceps, even in the largest 

 5 5 , where in all three forms the head is more massive 

 proportionately. 



The first node in largest $^ ^ is longer than the stalk, in 

 the smaller about equal. Underneath in front is a small 

 tooth *. 



Head longitudinally rugose, but beyond the level of eyes 

 the rugae have numerous cross-lines, and the scul[)ture 

 becomes almost reticidate-punctate. The sculpture of the 

 head is much more su[)erficial than in nigriceps. Sculpture 

 of pronotura also much more superficial than in nigriceps ; 

 that of the tnesonotum variable, in most specimens it is 

 transversely striated, but in one or two from the same 

 colony the striation is longitudinal^ and in others the 

 segment is almost smooth. 



Ludlow, W. Australia {Clark, uos. 2 and 5). 



Type W.C.C. coll. 



Intermediate between gracilis and nigriceps. 



TMie ants of the genus J/yr/neda, sometimes called '" Bull- 

 dog " ants, are also known as "Jumpers." Mr. Clark has 

 found that some species can leap a distance of tlu*ee or four 

 inches. 



Myrmecia harderi. For., race swalei, st. n. 



^ . Length (without mandibles) 9*0 mm. ; length of 

 mandibles 1*3 mm. 



Deep black; mandibles yellow, tinged with brown along 

 their apical half. Thorax and petiole light red, legs dark 

 brown, tarsi lighter. Antennae missing, except the nine 

 terminal joints of the left funiculus, which are dark brown. 

 Postpetiole and gaster with a faint blue metallic sheen. 

 Body and legs with a fine pale pilosity, most abundaut on 



* In imidex and nigriceps the tirst node is conspicuously longer than 

 the stalk in all sizes of the § • l" lictea this node in profile arises rather 

 nioro abruptly, and is less evenly rounded above than in vindex. 



