Mr. T. V. Wollaston on Additions to Madeiran Coleoptera. 51 



January 1859, in abundance, beneath stones, close to the shingly- 

 beach of the low calcareous promontory at Porto da Cruz, in the 

 east of Madeira proper ; and I have great pleasure in dedicating 

 it to my excellent friend the Barao do Castello de Paiva, to whose 

 kindness I am indebted for much valuable assistance in procur- 

 ing for me, at various times, specimens of Madeiran Coleoptera, 

 and whose botanical researches, both in Madeira and the Cana- 

 ries, are already well known. 



Fam. StaphylinidaB. 



(Subfam. Aleocharides.) 



Genus Tachyusa. 



Erichson, Kaf. der Mark Brand, i. 307 (1837). 



Tachyusa maritima, n. sp. 



T. depressa, minute punctulata, subopaca, nigra et dense cinereo- 

 pubescens ; capite transversim subquadrato ; prothorace late cana- 

 liculate, postice angustiore ; elytris vix picescentioribus ; antennis 

 pedibusque dilute testaceis, illis gracilibus, apicem versus vix 

 obscurioribus. 



Long. corp. lin. \\. 



Habitat Maderam, rarissima; in salmis lapidosis juxta mare ad 

 Sanctum Vincentium, inter lapillos velocissime cursitantia, duo 

 specimina mense Decembri a.d. 1858 collegi. 



T. depressed, dull-black, minutely punctulated, subopake, 

 and densely clothed with cinereous pubescence. Head trans- 

 versely subquadrate, being straightly truncated behind, and with 

 the forehead slightly channeled down the centre. Prothorax a 

 little narrowed posteriorly, and with a wide, but not very deep, 

 channel down its disk. Elytra just perceptibly more picescent 

 than the head and prothorax. Abdomen rather more shining. 

 Antenna slender, and a little longer than the head and pro- 

 thorax; testaceous, being but very slightly more obscured to- 

 wards their apex. Legs diluted testaceous. 



Two specimens of the present very distinct Tachyusa were 

 captured by myself, during December 1858, below high- water 

 mark, on the shingly beach at Sao Vicente, at the exact point 

 (close to the chapel-rock) where the stream empties itself into 

 the sea. It would appear to be the representative of the T. 

 uvida of more northern latitudes, being somewhat intermediate 

 between that species and the T. sulcata. It is, however, rather 

 smaller than the former, with its antennae shorter, more slender, 

 and (together with the legs) paler, and its head is not quite so 

 long ; whilst from the latter it recedes {inter alia) in being con- 

 siderably larger and with altogether longer limbs, — the antennal 



4* 



