Mr. A. White on the genus Lithodes. 265 



is named, from its short legs, Lithodes brevipes ; its beak is short. 

 In the British Museum we have a specimen. 



The Lithodes verrucosa, Dana (pi. 26. f. 16. vol. i. pi. 428), v/diS 

 found by that able and active naturalist in Fuegia. The carapace 

 is verrucose throughout. 



The Lomis hirta of M. Edwards, founded on the Porcellana hirta 

 of Lamarck (Anim. s. Vert. v. 229), is an interesting generic form, 

 to which Lichtenstein, in one of his catalogues, had applied the 

 name Thylacurus. De Haan, who quotes this, has figured a second 

 species in his * Fauna Japonica' (219. t. 48. f. 2. & t. Q), under 

 the name Lomis dentata : — " tota tomentosa, setis brevibus densis ; 

 thoracis margine medio 8-spinoso, pedibus secundis, tertiis et quartis 

 margine antico 1 5-spinosis, spinis cristam subcontinuam formantibus." 



Lomis hirta is abundant on the coast of Tasmania. 



Lithodes (Petalocerus) Bellianus. 



The first feature of the curious crab here described is the straw- 

 berry-like surface of its carapace, and of the blunt spines with which 

 its legs are covered ; the next feature is the subequilateral triangular 

 figure of that carapace ; this part is produced above the eyes into a 

 notched projection, with two shght prominences down the middle ; 

 this covers up the front part of the head, and conceals a wart-covered 

 spine above the base of the pedicels of the eye, which pedicels are 

 spiny above. The carapace has 3 spines on each side, and 2 tuber- 

 cles ; the first spine is directed forwards, and has one or two indi- 

 stinct spinelets at its base ; the second and third are separated from 

 the first by a considerable sinus, and are near each other ; they are 

 directed laterally, but slightly inclined forwards like the other two, 

 and indeed, like the whole of the carapace and the spines on the legs, 

 they are covered with the close warting so characteristic of this 

 species ; there are two tubercles on the lateral border, which at its 

 end are united at the base ; the anterior is the larger ; the hind part 

 of carapace is straight, bending round towards these tubercles and 

 thickened on the edges, one of its monticuli being connected with the 

 hindmost lateral tubercle ; the stomach, genital and cardiac regions 

 are covered by a projecting portion occupying a considerable part of 

 the back of the carapace and raised above it ; this projecting part is 

 environed by a somewhat lyre-shaped wall, pinched in front on the 

 sides and somewhat notched behind with two deep fossae placed 

 transversely and connected by a short canal, the base of which is 

 smooth with only a few groups of warts. 



The abdomen is very regular and complete for the group, and when 

 additional specimens will admit of its being dissected, its structure 

 promises to be curious ; the various parts of it are hardly perceptible 

 in the individual examined; a tolerably regular series of strange, close- 

 placed appendages on its edges, seem, on cursory observation, very 

 curious : there are about 1 2 deepish fossae over it, the 2 deepest in 

 the basal portion close to back part of carapace, and almost at right 

 angles to the rest of abdomen, 3 on each side diverging into smaller 

 fossulse towards the edges, and 4 down the centre. 



