202 Rev. A. E. Eaton's Annotated List of the 



ON ISCIG ASTER. 



Hind tibia much shorter than the tarsus, of which the 

 basal joint is much longer than the next. In all the tarsi, 

 and in both sexes, the outer or posterior claw is narrow 

 and hooked, the inner claw broad and obtuse, thus differ- 

 ing from Siphlurus, which has all the claws narrow and 

 hooked. The differences between their nymphs need not 

 here be dwelt upon. 



Oniscigaster wakefieldi. 



Oniscignstcr Wakefieldi, McLach., Ent. Mo. Mag., vol. x, 

 p. 108—110, woodcut (1873, Oct.) ; id., Journ. Linn. Soc. 

 ZooL, xii, pp. 139—146, pi. v, 1—5 g. (1874); Etn., Trans. 

 Linn. Soc. London, (2) Zool., vol. iii, p. 224, pi. xxi, 36 

 (details imago) and pi. Li (nymph). 



In this species, the $ has 3 dorsal segments, viz. the 7th to 9tli, 

 sinuate somewhat deeply on each side at the posterior margin, and 

 dilated laterally into thin expansions that are rounded off to the base 

 in front and acute behind, so as to form broad serratures like coxic 

 of Oniscus tniirarins. Above these the dorsum, in dried specimens, is 

 somewhat fornicate with a median longitudinal depression. The 

 first and second of the lateral serratures are broader and are rather 

 more produced at the point than the third. 



Hal). Christchurch ( Wakefield). 



Oniscigaster intermedius, sp. nov. (Plate X, fig. 6rt, 

 detail). 



A single $ im. differs from 0. Wakefieldi in having only 2 dorsal 

 segments, viz. the 8th and 9th, dilated laterally, and this only 

 moderately : dorsum sub-fornicate above the dilatation. Lateral 

 borders of 8th segment almost straight, except where they gently curve 

 inwards near the base, and very nearly parallel, diverging to only a very 

 small extent posteriorly : dorsum transverse at the posterior margin : 

 the postero-lateral angles obtuse. Ninth segment as broad, or per- 

 haps a little broader than the 8th ; its lateral margins saliently 

 curved and bordered ea^h by a linear flange terminating posteriorly 

 in a minute point : the posterior margin of the dorsum transverse 

 between these points. Wings marked as in 0. Wakefieldi. 



Hah, M' Arthur, Nelson, 3600 feet {Hudson, No. 34^). 



