I, caledonici is 



199 



anus anteriorly, then parallel, and slightly divergent behind. Spiracle 

 circular, macula median. Legs : coxa I visible dorsally, bidentate ; 

 with stout external spur and short internal spur ; a stout external spur 

 on coxae II and III, smaller on coxa IV ; trochanters 1-3 with short 

 spur at postero-external angles ; tarsus 4 long, tapering obliquely at 

 the distal third of its terminal portion ; claws much longer than the 

 pad. 



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Fig. 191. I. caledonicus ? : capitulum and scutum, capitulum in ventral aspect with 

 coxae, anal groove, tarsus 4 and spiracle. (Nuttall, 1910, Fig. 1, F. M. H. del.) 



Nymph (Fig. 192) : differs but slightly from the % : a few short 

 (caducent) hairs on the scutum, longer hairs, in moderate numbers, on 

 the body. Scutum as broad as long (0"7 x - 7 mm.) with lateral angles 

 rounded, with antero- and postero-lateral borders sub-rectilinear; cervical 

 grooves attaining the posterior border. Capitulum with marked, 

 trenchant cornua protruding outward and continuous with the turned 

 upward dorsal ridge. Hypostome 2 | 2, with eight pointed teeth in the 

 external hies. Venter : spiracle bluntly oval. Otherwise resembling 

 the ?. 



