314 SUMMARY OF CURRENT RESEARCHES RELATING TO 



Studies on Isopods.* — K. W. Verkoeff establiskes four new genera 

 of Oniscinae, several new species of Porcellio, and a new genus of Tricko- 

 niscidas. He discusses some morphological points connected witk tke 

 appendages. In referring to tke stridulating apparatus in Liyia and Sys- 

 pastus, ke notes tkat ke has kad tke pleasure of listening to tke sounds 

 made by Armadillo officinalis. Tkis is made by botk sexes wken rolled 

 up, and it is due to a kind of rotating movement of tke fourth and fifth 

 pairs of legs. 



Crustaceans living in Ascidians.f — E. Ckatton and E. Brement 

 describe Enterocola pterophora sp. n., a sluggish eruciform Copepod living 

 in Leptoclinum commune. It is readily distinguished from other species 

 of the genus by the presence of aliform dorsal plates. 



The authors also describe % Mycophilus curvatus sp. n., another 

 ascidicolous Copepod, from Polycyclus renieri and various species of 

 Botryllus. It is pointed out that tke genera Mycophilus and Enteropsis 

 are very closely alike, and may simply be two stages in parasitic adapta- 

 tion. 



Crustacea in Gizzard of Deep-sea Cuttlefish. § — Tkomas Scott 

 reports on "a carcinological collection " obtained in tke stomack of Stau- 

 roteuthes hippocrepium, from a deptk of 2425 fathoms. Tke most in- 

 teresting item was Pontostratiotes abyssicola Brady, a curious species 

 wkick does not seem to kave been met witk since Brady's discovery of it 

 in tke ' Ckallenger ' collection. Tke autkor supplements Brady's de- 

 scription. 



Wood-boring Crustacea from Christmas Island. || — W. T. Caiman 

 describes Ghelura insulse sp. n., and Limnoria andrewsi sp. n. Tke 

 aberrant Ampkipod family Cheluridse kas 'hitherto comprised only a single 

 species, the well-kown Ghelura terebrans of the North Atlantic and ad- 

 joining seas, and the discovery of a second species in tke Indian Ocean 

 is therefore of interest. Of tke Isopod genus Limnoria five species kave 

 been already described ; of tkese tke only one known from tropical seas 

 (from tke island of Minikoi) is L.pfefferi Stebbing ; it appears to be very 

 different from tkat now described from Christmas Island. 



Fresh-water Lern8eopodida3.1T — E. Neresheimer discusses such forms 

 as Tracheliastes, Achtheres percarum, Basanistes huchonis, B. coregoni, 

 Lerneeopoda carpionis, and L. heintzi sp. n., and shows that for the deter- 

 mination of genera and species reliance may be placed on the structure of 

 the attaching apparatus of the second maxillipede. 



Autumnal Iridescence of Lakes.** — Oscar Wyss has studied tke 

 " Herbstiris," a rainbow-like appearance seen on tke calm surface of tke 



* Arch. Biontolog., ii. (1909) pp. 339-87 (3 pis.), 



t Bull. Soc. Zool. France, xxxiv. (1910) pp. 223-9 (5 figs.). 



% Tom. cit., pp. 234-40 (4 figs.). 



(> Ann. Nat. Hist., v. (1910) pp. 51-4 (2 pis.). || Tom. cit., pp. 181-6 (1 pi.), 



f Ber. Bayer. Biol. Versuch. Miinchen, ii. (1909) pp. 1-8 (1 pi. and 1 fig.). See 



also Zool. Zentralbl., xvii. (1910) p. 93. 



** Rev. Suisse Zool., xvii. (1909) pp. 441-7 (1 pi.). 



