1871.] J. Wood-Mason— On TelpMsidce. 197 



unknown from any place of the south part of India, or from Eastern 

 Bengal. The ' Tille Nauclon' of the Coromandel coast with which it 

 has been said to be identical, is certainly not T. Jndica, but, as M. 

 Milne-Edwards has stated, T. LesehenauUii, which also occurs at 

 Ranigunj. A fine series of specimens of the present species has 

 lately been received from my friend Captain Stewart Pratt of 

 Morar, who has furnished me with some interesting notes respecting 

 the habits of the species. 



Telphusa lugubris, n. sp. PI. XII, Figs. 5 — 7. 

 The carapace is very greatly broader than long, distinctly punc- 

 tate and somewhat flattened posteriorly ; the cervical suture curves 

 forwards and outwards to the rudimentary epibranchial teeth ; the 

 hepato-gastric area thus limited off is convex in every direction, and 

 only marked mesially by a long tolerably deeply imprinted meso- 

 gastric furrow which exhibits a tendency to bifurcation at its poste- 

 rior extremity ; gastric area marked with two larger puncta, one 

 being situated at each horn of the mesial crescentic portion of the 

 cervical suture, from which two shallow hardly indicated longitu- 

 dinal depressions pass backwards, one on each side of the middle 

 line dividing the cardiac from the convex branchial regions ; the 

 sub-division of these into posterior and anterior lobes is scarcely 

 perceptible. Oblique granulated rugosities mark the whole sur- 

 face of the branchial area, becoming more numerous on the postero- 

 lateral margin, whence they sweep downwards and forwards on to 

 the floor of the branchial chamber. Latero-anterior margin with a 

 short obscurely granulated carina. Postfrontal crest continuous 

 from the mesogastric furrow to the epibranchial teeth, its epigastric 

 portion is wrinkled and bent forward, and it becomes almost effaced 

 behind the inner canthus of the eyes. Front rough, deflexed, 

 with a sinuous obsoletely granulated free border. Orbits very 

 high, with crenulated margins ; extra-orbital angles little developed, 

 separated from the epibranchial teeth by a long, granulated, obli- 

 que and nearly straight external border ; anterior pleural lobes 

 broad, nearly smooth, distinguishable from the inflected portion of 

 the carapace by the termination of the rugosities with which the 

 latter is ornamented. The epistoma is smooth and lighter in colour 



