66 Mr. G. M. Thomson on a 



ocliraceous, not piceous ; membrane reaching tlie base of tlie 

 lif'tli abdominal segment ; intermediate and posterior femora 

 longer than the hemelytra, but shorter than the tibife ; 

 pronotum about half the length of abdomen ; abdominal 

 appendages mutilated. 



Long.j exol. abdom. append., 35 mm. 



Bab. Natal : Durban (Brit. Mus.). 



Ranatra sordidula, 



Ranatra sordidula, Dohrn, Stett. ent. Zeit. xxi. p. 409 (1860). 

 Ranatra unicolor, Scott, Ann. & Mag. Nat. Hist. (4) xiv. p. 462 (1874). 



Synonymic Note. 



Philiajactator. 



Philiajactator, StSl, CEfv. Vet.-Ak. Forli. 1854, p. 231. 

 Philia fenestrata, Bredd. Abli. Ges. Halle, xxiv. p. 35 (1901). 



Mr. Kirkaldy showed me a cotype of Breddin's species. 



XI. — A new Fannly of Crustacea Isopoda. 

 By George M. Thomson, F.L.S. 



[Plate I.] 



In the ' Mission de I'lle Campbell,-' published in 1885, the late 

 Dr. Filhol briefly described (p. 492} an Isopod obtained at 

 Stewart Island as Idotea Stewarti, and figured it at pi. liii. 

 figs. 8 and 9. Tiie following is a translation of the very 

 brief description : — 



"Inner antennas very short, 4-jointed; terminal joint 

 elongated, slightly enlarged in the middle. Its apex reaches 

 the end o£ the second joint of the outer antennae. The latter 

 are 5-jointed ; their lower margin is I'urnished with numerous 

 harsh hairs. The three first pairs of feet increase in size 

 posteriorly ; their third, fourth, and fifth joints are furnished 

 with numerous hairs on their lower margins; the claws are 

 long, slender, recurved, and acute. The last segment is 

 elongated and rounded at its apex.^'' 



Among some Crustacea received from my friend Dr. Chilton, 

 from Mr. H. Drew of Wanganui, were two dried specimens of 

 this species. 



In 1900; during trawling-operations on the east coast of 



