334 TRANSACTKDNS, NATURAL HISTORY SOCIETY OF GLASGOW. 



Subtribe LITHODEA. 



Family LITHODIDAE. 



Genus Lithodes, Latr. 



LITHODES MAIA. 



Cancer maia, Linn., Syst. Nat. i., p. 1046, 41. 



,, horridus, Penn., Brit. Zool. iv., pi. vii., fig. 14, p. 7. 



Lithodes arctica, Lam., Hist. An. sans Vert v., p. 240. — M. 

 Edw., Hist. Nat. des Crust, ii., p. 186. 



- Lithodes maia, Leach, Trans. Linn. Soc. xi., p. 332. — Bell, Brit. 

 Crust, p. 165. 



Loch Fyiie (M* Andrew). In deep water off Arran 

 (Miles and Greville). At Cumbrae, occasionally on 

 the nets and fishing lines (Robertson). We trawled 

 three specimens in shallow water off Cumbrae, two 

 — male and female — in one haul; the latter being 

 apparently much less frequently met with than the 

 male. It appears to be rather common in Loch 

 Fyne, and we met with several specimens there. 

 Young individuals of this, as of most other Litho- 

 dids, have the spiny armature comparatively more 

 strongly developed than adults. 



This species is frequently taken by trawlers near 

 the mouth of the Firth of Forth. We procured two 

 females with ova in the month of January last, and 

 from one of these succeeded in hatching the young 

 at the Granton Marine Station ; the zoea is probably 

 the largest of any British crustacean, and it bears 

 a remarkable similarity to that of Eujoagurus in all 

 its essential characters. Dr. Boas, in his able work 

 on the classification of the higher Crustacea,* has 

 on morphological grounds placed the Lithodidae 

 along with the Paguridae in a distinct group of 

 Anomura (Paguroidae). He points out that the 

 genus Lithodes has in all probability been derived 

 from EtqDagiirus or some closely-allied form. 



* J. E. V. Boas, Studier over Decapodernes Slaegtskahsforhold, 

 (Avec un resume en frangais.) Kjobenhavn, 1880. 



