ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 45 



New Mediterranean Isopod.*— Emile G. Racovitza describes Ischy- 

 romme lacazei g.etsp. n., a new Isopod from Banyuls. It belongs to 

 the family Sphaeroruidae, and is nearly related to Dynamenella Hansen. 



Cavernicolous Trichoniscinse.t — E. G. Racovitza continues his 

 elaborate account of cavernicolous Isopods. He divides the sub-family 

 Trichoniscinie into two sections: Haplophthalmus, the type of the one, 

 and Trichoniscus, the type of the other. In the first section he in- 

 cludes : Haplophthalmus School., Buddelundiella Silvestri, Gyplwniscellus 

 Verhoeff, with Ghavesia Dollfus incertae sedis. In the second section 

 he includes : Trichoniscus Brandt (with many sub-genera), and Schiodtia 

 Budde-Lnnd, with Oligoniscus Dollfus incertas sedis. 



Regeneration and Moulting in Gammarus.J — Mary T. Harman 

 has tried to discover whether there is any relation between degree of 

 injury and rate of regeneration. In one set of Gammarids the right- 

 hind leg was removed ; in another set the two pairs of hind legs were 

 removed. She found that the degree of injury has no effect on the rate 

 of regeneration or on the length of the moulting period. 



Two New Northern AmphipodsJ— T. R. R. Stebbing describes two 

 blind forms collected by the 'Goldseeker' from considerable depths — 

 Lepechinella chrysotheras g. et sp. n., ranked in the family Paramphi- 

 thoidae, although the integument is not indurated, and Rachotropis 

 palporum sp. n. in the family Eusiridse. 



Anaspidida3.|| — G. W. Smith gives a short account of Parariaspides 

 lacustris g. et sp. n. from the Great Lake of Tasmania, and discusses 

 the position of the Anaspididtc. He has been aide to study the habits 

 of Anaspides tasmanice (Thomson) which creeps about at the bottom of 

 the pools, keeping the body quite flat or unflexed, as in the related 

 Carboniferous fossils. It seems to be omnivorous, but its chief food is 

 algal slime. It will probably be exterminated by the introduced English 

 trout. The exopodites of the thoracic limbs are entirely respiratory. 

 The male and female openings are in the normal Malacostracan position, 

 and the large median opening on the ventral surface of the last thoracic 

 segment in the female is not, as Thomson supposed, the aperture of the 

 oviducts, but opens into a blind pouch, the spermatheca, where the male 

 deposits the spermatozoa. 



The heart, which is tubular and elongated, stretches through the 

 whole of the thorax, and passes without a very definite constriction into 

 the abdomen. There is apparently a single pair of ostia in the third 

 thoracic segment. The whole structure of the alimentary canal is 

 peculiar, and not quite like that of any other group of the Crustacea: it 

 has a simple gastric mill, about thirty glandular caeca, and two unpaired 

 dorsal casca in the abdominal region. 



The nerve-cord consists of eight free thoracic ganglia and six 



* Arch. Zool. Exper., ix. (1908) Notes et Revue, No. 3, pp. Ix-lxiv. (2 figs.). 



t Tom cit. pp. 239-415 (20 pis.). 



X Proc. Indiana Acad. Sci., 1907 pp. 62-75. 



§ Journ. Linn. Soc. (Zool.) xxx (1903) pp. 191-7 (2 pis.). 



|l Proc. Rov. Soc, Series B, lxxx. (1908) No. B 543, pp. 465-73 (1 pi. and 6 figs.) 



