ZOOLOGY AND BOTANY, MICEOSCOPY, ETC, 297 



New Isopod from British Guiana.* — W. E. Colliiige describes 

 Calycuoaiscus bodkini g. et sp. n., a form of doubtful affinity. It is of 

 special interest in having a series of very peculiar chitinous organs on 

 the body segments and cephalon. Each consists of a cup-shaped organ 

 with a tube-like body in the centre. Similar structures have been 

 noted by Dollfus and Budde-Lund. The form of the cephalon is 

 unusual, the eyes being very prominent and situated almost above the 

 cup-shaped lateral bodies, whilst the median lobe is prolonged forwards 

 and sUghtly downwards. 



New Terrestrial Isopods.f — Charles Chilton establishes a new 

 Trichoniscid genus Notonkcus for the two New Zealand forms which 

 he had previously referred tentatively to the genus Haplophthcdmus. 

 The new genus seems near to Haploplithahnus, but differs in the 

 character of eyes, which, though small, have more than one visual 

 element, and in the fact that the first three segments of the pleon have 

 the epimeral plates very small or absent. The author also describes 

 Haplophihalmus tasmanicus sp. n., which differs, however, from the 

 definition Sars gives of the genus in having eyes not simple, but 

 composed of three ocelli, and in having the segments of the perseon not 

 discontiguous laterally. Another new form, also based on a single 

 specimen, is Cubaris suteri sp. n., easily distinguished from all other 

 New Zealand species by the characteristic sculpturings on the dorsal 

 surface. 



New Ascidicolous Copepods.J — E. Chatton and the late E. Brement 

 have described the female of Brementia balneohnsis g. et sp. n., parasitic 

 on LeptocUnum. It is 2 mm. in length, symmetrical, vaguely cyclopi- 

 form, with two distinct regions — cephalopereion and pleon, with much 

 reduced cephalon, with a dorsal incubatory chamber. The thoracic 

 limbs are strongly developed. The general colour was violet, due 

 mainly to the gonads ; the gut was yellow, the tissues were uncoloured, 

 the eye was bright red. The new genus approaches Ophioseides, another 

 ascidicolous type. 



Another new form is described § from the same host, and named 

 Ooneides aniela g. et sp. n. Along with Enterocola, Brementia and 

 Haplostoma it may be included in a new family, Ophioseididge. It is 

 the most deformed and degenerate of the known ascidicolous Copepods. 

 Only the female is known. It is globular, but with the ventral surface 

 much shorter than the dorsal. The pereion is swollen without trace of 

 pereiopods, and includes the pleon in a ventral cavity. The incubatory 

 chamber is dorsal. The gut is yellow-brown, the vitelhis of the eggs 

 violet-grey-brown, the agg bright red, the tissues are uncoloured. The 

 animal lives fixed in the cloaca. A morphological discussion of the 

 oostegites, the pterostegites and the incubatory chamber is found in a 

 third study. II 



* Journ. Linn. Soc. (Zool.) xxxii. (1915) pp. 509-11 (1 pi.). 

 t Journ. Linn. Soc. (Zool-.) xxxii. (1915) pp. 417-27 (2 pis.). 



I Bull. Soc. Zool. France, xl. (1915) pp. 129-34 (2 figs.). 

 § Bull. Soc. Zool. France, xl. (1915) pp. 135-43 (4 figs.). 



II BuU. Soc. Zool. France, xl. (1915) pp. 143-55 (4 figs.). 



