754 SUMMARY OK CURRENT RESEARCHES RELATING TO 



Dispersal of Marine Crustacea by Ships.* — Charles Chilton 

 obtained from a partially split plank of the British Antarctic ship 'Terra 

 Nova' when she arrived at Lyttelton in October l!>lo, four specimens of 

 a large Sphaeroinid, Cymodoce tuberculata Haswell, both male and female, 

 and two of them alive. " This species is quite unknown in New Zealand 

 waters, but is an Australian one, and there seems little doubt that it had 

 attached itself to the ship all the way to New Zealand, i.e. about twelve 

 hundred miles." Some similar instances are recorded. Thus T. F. Cheese- 

 man reported a King-crab (Carcinoscorpius rotundicauda (Latr.), from 

 Auckland, and Ray Lankester has called attention to a record of 

 another (Limulus polyphemus), found in the harbour of Copenhagen, 

 clinging to a ship from North America. 



Studies on New Zealand Crustaceans.f — Charles Chilton submits 

 a revision of the four species of New Zealand Squillidae — Squilla armata 

 Milne-Edwards, S. affinis Berthold, Lysiosquilla spinosa (Wood-Mason) 

 and L. brazieri Miers. 



The author also reports % on the Crustacea collected by the New 

 Zealand Government Trawling Expedition (1907). The collection 

 includes 28 Decapods, 2 Stomatopods, 4 Amphipods, 5 Isopods, 2 Cirri-- 

 peds, and 2 parasitic Copepods. Though there are no new species, the 

 collection is interesting in containing a number of species not reported 

 since the ' Challenger ' Expedition. There are some interesting cases 

 of commensalism, or epizoic association, e.g. Paramithrax longipes with 

 specimens of Balanus decorus on its back, which are in some cases so 

 large and numerous that they exceed in size the body of the crab itself, 

 and Eupagurus stewarti, which has a straight abdomen, and inhabits 

 tubes formed by a Millepore or a massive calcareous Polyzoon, which is 

 very much larger than the crab. 



Primitive Fresh-water Prawn.§ — E. Sollaud refers PaJsemonetes 

 irispinosus Aurivillius, a fresh-water prawn apparently widespread in 

 Equatorial Africa, to a new genus Desmocaris, on account of its numerous 

 ancestral characters. It is much more primitive than any of the other 

 Palaenionids ; it links the Palsemonids to the lower Eucyphota of the 

 Hoplophorid group. 



Genus Leptocheirus. || — E. W. Sexton has revised the species of 

 this Amphipod genus, and has re-examined Zaddack's type species 

 L. pilosus, of which L. cornaaurei Sowinski and L. subsalsus Norman 

 are synonyms, the former being the full-grown male and the other the 

 full-grown female. The other six species are : L. pinguis Stimpson ; 

 L. hirsutimanus Bate = Backia typica Malm. ; L. gvttatus Grube = 

 Ptilocheirus tricristatus Chevreux ; L. pectinatus Norman = Protomedeia 

 fasciata Costa and L. dellavallei ; L. aberrans Ohlin ; and L. bispinosus 

 Norman = Protomedeia hirsutimanus Heller, and L. gvttatus Delia 

 Valle. The paper is a good type of careful revision. 



* Trans. New Zealand Inst., xliii. (1910) pp. 131-3. 



t Trans. New Zealand Inst., xliii. (1910) pp. 134-9 (4 figs.). 



J Records Canterbury Museum, i. (1911) pp. 285-312 (1 pi. and 1 fig.). 



§ Comptes Rendus, clii. (1911) pp. 913-16. 



i! Proc. Zool. Soc, 1911, pp. 561-94 (3 pis. and 1 fig.). 



