ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 43 



unites the two scuta behind or beneath the adductor muscle is covered 

 with a crusty (Bryozoon-like) covering of over a hundred minute males. 

 " Why did they choose for attachment a place which is less favoural)le 

 for impregnation ? Because they were so numerous and did not find 

 space enough at the ordinary place." 



Ostracodal Limestone.* — F. Chapman describes a rock from 

 Durlstone Bay, Dorset (Upper Purbeck Series), which is interesting as a 

 striking example of limestone almost entirely composed of the valves of 

 Ostracoda — namely, species of Cypridea. 



New Zealand Ostracoda.f — F. Chapman reports on a collection of 

 Ostracods dredged off Great Barrier Island. Of the fourteen species 

 noted, nine are new to the New Zealand area, and Cytherideis hedleyi is 

 a new species. In the same paper he deals also with Foraminifera (see 

 Protozoa). 



Marine Copepods of Rhode Island. | — L. W. Williams reports on a 

 collection including twenty-six free-swimming Copepods, one parasitic 

 form {Argiilus latirauda Scott), and a metanauplius of a parasitic form 

 {Caligus or Lepeophtheirus). The following new species are described : 

 Pseudo-dlaptomus coronatus, Eurytemora americana, Tortanus seta- 

 caudatus. 



Copepods from Farther India, Sumatra, and Java.§ — E. v. Baday 



reports on a collection of oriental Copepods, including Cyclops asperl- 

 cornis sp. n., Aitheyella (jrandidieri (Guern. Eich.), A. decorata (Dad.), 

 Nitocra platypus sp. n., Dactylopus jngurtha Bl. and Rich., Laoplionip, 

 mohammed Bl. P., and Diaptomus visiiu sp. n. 



New Species of Caligus. || — P. Gadd describes Caligus dentatus sp. n., 

 found in abundance by Einar Lonnberg on carp in the Caspian Sea. 

 The female resembles C. remorce, but has a very characteristic cephalo- 

 thorax : the male resembles C. branchiaUs, and is somewhat larger than 

 the female. 



Parasite of Corynactis viridis.f — A. Quidor describes Mesoglicvla 

 delagei g. et sp. n., which Prof essor Yves Delage found at Roscoff in the 

 mesogloea of Corynactis viridis. The body of the adult is elongated 

 (7-8 mm.) and cylindrical, with distinct head, and indistinctly segmented 

 thorax and abdomen. There are two pairs of antennae with sharp hooks, 

 short mandibles beside the siphon, and rudimentary maxillae. The 

 young occur isolated in the mesogloea, the adults unite and form 

 a whitish sub-ectoderm ic tumour on the Corynactis. The young are 

 liberated as metanauplii. Infection is via the ectoderm, but endodermic 

 infection is possible. In many respects this interesting new form recalls 

 the Monstrillidae. 



* Proc. Geol. Assoc, xix. (1906) pp. 283-5 (1 pi.). 

 t Trans. New Zealand Institute, xxxviii. (1906) pp. 77-112 (1 pi.). 

 J Amer. Nat., xl. (1U06) pp. 639-60 (23 figs.). 

 § Zool. Jahrb., xxiv. (1906) pp. 175-206 (3 pis.). 

 II Arkiv. f. Zool., iii. No. 15 (1906) pp. 1-9 (9 figs.). 

 t Comptes Rendus, cxliii. (1906) pp. 613-15. 



