, A new London Clay Crustacean, 533 



furrows wliich separate the various parts are smooth. These latter, 

 without being very salient, are plainly indicated. On the gastric 

 region, the epigastric lobes are not distinct from the protogastric ; 

 the mesogastric stretches from a point between these to the middle 

 slope of the front. The metagastric lobe is distinct from the 

 urogastric. The branchio-cardiac furrow is strongly marked. The 

 cardiac region is rounded and gently sloped off in the rear. The 

 hepatic regions are separated from the branchial by a shallow de- 

 pression; the latter ai-e rather swollen, and show an ill-defined 

 lobule near the urogastric lobe. 



The latero-anterior borders of the carapace are thick ; they exhibit 

 in the midst of the granulations which cover them, three or four 

 little tubercles scarcely larger than the granulations themselves. 



The external orbital angle does not project in the form of a tooth. 

 The orbits are very small and point directly forward. The super- 

 ciliary arch is well marked, and has no fissure. The front (rostrum) 

 juts forward straight and is furrowed down the centre. The pterygo- 

 stomian regions are finely granulated. 



The anterior feet are unequal, the fore-arm shows a small blunt 

 projection within, on the outer side it is smooth : the large hand is 

 smooth both above and below, and is not tuberculated ; the fingers 

 are short and thick, the thumb is ornamented near its base with 

 a strong tooth, the fore-finger has two rounded teeth. The small 

 hand is finely granulated or rather roughened, the fingers are 

 slender and longer in proportion than those of the large hand. 

 The walking feet are smooth, having neither granulations nor 

 tubercles. The various parts of the sternal plastron are granulous. 

 All the rings of the abdomen are free, as we have already said, in 

 describing the characters of the genus. 



EXPLANATION OF PLATE XXI. Figs. 2 & 3. 



Fig. 2. Dorsal aspect of Necrozius BowerbanMi, A. Milne- Edwards ; twice nat. 

 size. 

 „ 3. Front view of same, showing the Orbital and Antennary fossae and the 

 chelae ; twice nat. size. 



A 



III. — The Kitchen Middens at Llandudno. 

 By the Rev. J. M. Mello, M.A., F.G.S., etc. 



WEEK or two spent last month at Llandudno has given me 

 the opportunity of examining the deposits on the Great 

 Orme's Head, described by the Kev. T. G. Bonney in the August 

 number of the Geological Magazine, and supposed by him to be 

 the remains of a Kitchen Midden. The present communication is 

 intended merely as a supplementaiy note to his paper. It appears 

 that the beds, containing recent shells and bones, had been pre- 

 viously observed, and their true character ascertained, since the Eev. 

 W. S. Symonds remarks, in some notes on the Geology of the 

 district, " The beds of mussels and other shells on the Great Orme, 

 which, at one time I imagined to have been elevated in raised 



