A. e. OtTDiaiAXS, S'OTKS ox ACAIU. 22'.l 



.scarcely visible arountl the stio-iiia, better uroiuid the peritremti 

 on the dorsal side (fig. 1.")). Hairs; all the hairs on the 

 ventral side are bristles, viz. : three pairs of sternal and one 

 pair of nietasternal long bristles, one pair of smaller genital 

 bristles between the coxae IV, three circumanal still smaller 

 bristles, especially the postanal one, and about 19 pairs on 

 the venter, of which three pair beliind coxae IV are puncti- 

 form, and 8 pairs are marginal. 



E p i s t o m a (Fig. 17) : two longitudinal lines demarcate 

 a median space from the lateral (maxillar-coxal) streaks ; two 

 transversal lines are shown in the anterior part of the median 

 space ; three oblique chitinous ridges are to be found quite 

 laterally; the anterior edge shows three mucro's of whicli 

 the median one is wider, distally truncate, or even a little exca- 

 vate, and the lateral ones sharp and slightly diverging. 

 S t y 1 i normal, long. 



Mandibles short, reaching when wholly retracted the level 

 of the shoulders, dhelae (fig. 18) robust, with a singularly 

 formed upper jaw. Tibial sense-organ not lanceolate, but more 

 or less sausage-shaped, not horizontal but a little erected. 

 Tarsal sense-organ short and wide. Upper jaw nearly equal 

 in width throughout, bent downward, distally obliquely trun- 

 cate, and here bearing all the teeth : three small incisors, 

 with a semicircular excavation between the second and third 

 incisor ; three small canine-teeth, with a ditto excavation 

 between the second and third canine teeth, and with a ditto 

 excavation on the outside of the jaw, just above the third 

 canine tooth, to receive the to]i of the large canine tooth of 

 the lower jaw. Lower jaw with three incisors, only op.e 

 canine tooth already mentioned, and a long blade-like molar, 

 making scissors with the sharji edge of the under-side of the 

 upper jaw. P u 1 v i 1 1 u m : a row of stiff hairs. 



Maxillae. Tudersidc of capitulum (fig. 10) with tlic 

 usual 4 pair of bristles ; with an oblong depression between 



