78 



RECORDS OF THE AUSTRALIAN MUSEUM. 



the 



Fig. 14.— Cv''""''""' (/«c<'«,v/i7«i//«-.— Skeleton of 

 head (antemiie and mouth parts removed), in 

 profile, showing the "Mulo-occipital bridiie " (B) 

 and the position of the first tergite (Ti). 



Measured on the level of the eyes, the head is still broader 

 than in Sj^hif.rojMx'its though almost as short. The upper lip 



is less produced. 

 The anteniial fossa, 

 instead of extending 

 backwards and be- 

 ing closed in front 

 as shown by Ver- 

 loefE (/.(■., PI. ix., 

 tig. 14-2), is open 

 frontwards and 

 downwards and 

 closed backwards by 

 a strong, perpendic- 

 ular, rouiuled ridge 

 on which stand the 

 isolated ocelli (tig. 

 14). The lateral 

 surface behind the 

 ridge is feebly depressed. The back part of the head is 

 completely and evenly i-ounded, smooth and densely clothed with 

 short hairs. A deep sulcus is to be seen laterally siniilai' lo 

 that illustrated by Verhoeff, accompanied by a more oi' less 

 distinct horizontal ridge beginning at a point near and below 

 tlie inferior ocellus and dying (Hit before reaching the posterior 

 sui'face of the head. The processes which start from the 

 posterior margin of the head are well developed and are fnsed 

 with the hypostoma into a bridge (Verhoeif's " jioiin ijnln- 

 occipitulis''). But the distal part of the bridge, equivalent to 

 the hypostoma, instead of being in a line with the processes, 

 is placed nearly at right angle so as to be almost horizontal. 



Epipharynx and hypopharynx very much resemble the same 

 organs of SpJuvropivns. IMie same might be said of the man- 

 dible except that the pectinate lamellas are represented by 

 oidy five rows of minute rods or spines, the two inner rows 

 being composed of smaller ami less numerous elements than 

 the three outer rows. For instance, it is possible to distinguish 

 fourteen rods in the first (outer) row, fourteen in the second, 

 ten in the third and six in each of the fourth and fifth row, 

 and besides some (five) pah- warts whicli have prdlmlily to be 

 considered as rudimciitaiN- i-(i(|s. The tracheal st;ilk of the 



