121 



PdIdciHoH Sqii///(i, IL Uatjikk, Bciti'ago z. Fauna Xorweg-ens, 

 1848, p. G, in: Yerhandl, kais. Loop. Carol. Akad. Xaturf. 

 Bd. XII. 



Pdlwiiton Squ/l/a, Fk. Meinert, Crustacea Isopoda, Aniplii- 

 poda et Decapoda Daniae, 1877, p. 200. 



Leander Squilla, A. Appellöf, Die Dekapoden t!rustaceen, in : 

 Meeresfauna von Bergen, Heft 2 u. 8, 1906, p. 126. 



2 adult females, one of wliieh is ova-bearing, collected Juiie 

 1902 at Bergen, Norwav, at the coast near the Biological Station 

 and received froni Dr. O. Nordgaard at Trondhjem. 



46 specimens, viz. 14 adult ova-bearing females, 3 younger females 

 without eggs and 29 males, that are of a somewhat smaller size 

 than the females and probably not yet adult, collected June 

 1914 in the Svendborg Sund at a depth of one meter and recei- 

 ved from the Danske Biologiske Station at Copenhagen. 



8 females with eggs, one without eggs and 2 young males 

 from Denmark, presented by Dr. K. Stephensen. 



The examination of tlie largo collection of 250 specimens of 

 Jjeaudcr Sqiii/la from different parts of Europe, now in my pos- 

 session, lias proved and brought to light, not only that the form 

 from the Black Sea ought to be regarded as a distinct variety, 

 but even that the specimens from the Coast of Holland, from 

 the Channel and from Great-Britain also differ by some distinct 

 characters from the species that inhabits the seas of Scandinavia, 

 so that the former must be distinguished as a second variety. 

 The Scandinavian species, however, is regarded by me as the 

 true Leander tyepiiHa of Linnaeus, for he says (1. c.) : „Habitat in 

 M. Balthico, Oceano Europaeo". 



The adult ova-bearing female attains a length of 60 mm., but 

 females, only 36 mm. long, are already provided with eggs ; the 

 eggs are 0,6 — 0,7 mm. long. The male specimens are of a smal- 

 ler size, the largest measuring 45 mm., and the male of L. Squilla 

 certainly does not attain the length of the female. The convexity 



