46 SUMMARY OF CURRENT RESEARCHES RELATING TO 



abdominal ganglia. No antennary glands are present, but there are 

 maxillary glands — a primitive character. The ovaries and testes 

 are paired tubes stretching the whole length of the body ; their ducts are 

 simple tubes not provided with accessory glands. The adult spermatozoa 

 are filiform, with globular heads and an elongated flagellum. 



The pale purple ova, about 1 mm. in diameter, are probably fertilised 

 as they pass out by spermatozoa which migrate from the spermatheca. 

 The female deposits and hides her eggs singly, and not agglutinated 

 together, under stones and among the roots of water-plants, being the 

 only crustacean (with the possible exception of the peculiar parasitic 

 Argulidse) that does this. 



The new type Paranaspides lives among the rocks and water-weeds 

 in the littoral zone of the lake ; it has a marked dorsal flexure and a 

 swimming habit. The mandible bears a four-jointed and distinctly 

 biramose palp, a characteristic only found elsewhere among Copepods ; 

 the first thoracic appendage bears on the inner face of the antepenulti- 

 mate joint a setose lobe used in mastication. 



The author agrees with Caiman that the Schizopods should be done 

 away with as a natural group, and that the Anaspidida? (Anaspides and 

 Paranaspides) and Koonungidre (Koonuaga) should be placed in a sepa- 

 rate division, Anaspidacea, apart from Pcracarida and Eucarida. 



Antarctic Schizopods.* — W. M. Tattersall reports on thirteen 

 species collected by the ' Discovery,' ten from strictly antarctic waters, 

 more than doubling the list of south polar Schizopods. There are no 

 species common to the fauna of both polar regions, but all the genera, 

 save one, Antarctomysis, are represented in northern waters, by species 

 which are quite distinct from their southern allies. It is probable that 

 what are now known to be bipolar genera and species, will be found to 

 be cosmopolitan, as has been shown in regard to Lophogt/stcr typicus, 

 a stock instance of a bipolar form. 



Species of Oithona.f— G. P. Farran describes from the west and 

 south-west of Ireland two new species of Oiihona — 0. dtlanika and 

 0. pelagka — which he distinguishes from 0. plumifera and 0. setigera. 

 The distinction between 0. setigera and 0. pelagica lies only in the 

 presence of clavate or tapered setse on the basals of the swimming feet. ' 

 Possibly this distinction may be regarded by some as insignificant ; but 

 until it is shown that the two varieties of seta? can occur in specimens 

 from all localities, it ought not to be disregarded. 



Loricula darwini.J — Henry Woodward describes this fine new 

 species of Cirripede from the Middle Chalk (Turonian), near Rochester, 

 Kent, which differs from L. pulchella in its much greater size and more 

 remarkable capitulum, and in certain distinctive features in the form of 

 the scutum and the latera. 



Antarctic Copepods.§ — P. Norris Wolfenden describes a new genus, 

 Paralabidocera, and seven new species. He finds that the Antarctic 



* Nat. Antarctic Exped. (Zool.) iv. (1908) 42 pp. (8 pis.). 



t Ann. Nat. Hist., ii. (1908) pp. 498-503. 



% Geol. Mag., v. (1908) pp. 491-9 (2 figs.). 



§ Nat. Antarctic Exped. (Zooi.) iv. (1908) 44 pp. (7 pis.). 



