108 Mr. D. Sharp's revision of the species 



This species hears an extreme resemblance to some of 

 the varieties of T. nit ens, but can be readily distinguished 

 by the ciliate posterior tibiae. The sternal spine is 

 rather short and stout, not extending quite so far as the 

 hind margin of the 2nd ventral segment ; it is punctate, 

 but not quite flat, and is thick in the vertical direction. 

 The apical ventral segment has only the rudiment of a 

 carina. The punctuation of the elytra is very fine, that 

 of the epipleural margin quite coarse, even at the base. 

 The legs are rather short and stout, usually dark in 

 colour, and the upper face of the hind tibia is rather 

 closely scjuamose-punctate. 



I have had some doubt in determining this to be 

 Boheman's T. nigrinus, but, although he does not 

 allude to the important facts as to the condition of the 

 tibiae, epipleural margin, &c, his description on the 

 whole accords better with this species than with any 

 other I know, and I have therefore applied his name to 

 it. Most of the individuals I have seen are from old 

 French collections, and are labelled either " ebenus, Dej.," 

 or " geniculatus, Klug." 



23. Hijdrophilus ochripes, Curt. 



Curt., Trans. Linn. Soc, xix. (1845), p. 443. 



Chili ; Bolivia ; Southern Brazil ; La Plata ; Buenos 

 Ay res ; Monte Video ; Corrientes ; Bio de Janeiro. 



In this species the legs are nearly always yellow ; 

 the punctuation of the upper surface is fine and regular, 

 but quite distinct ; although the epipleural margin is not 

 broad, its punctuation is quite distinct even at the 

 shoulder ; the sternal spine is slender and elongate, 

 reaching as far as the extremity of the 2nd ventral seg- 

 ment, and is without punctures ; there is only a very faint 

 indication of any carina on the last ventral segment. 

 The more slender elongate and glabrous sternal spine 

 readily distinguishes this species from T. nigrinus. 



The description of Curtis, though brief and without 

 allusion to any of the most important characters, applies 

 better to this species than to any other known to me, 

 and as the habitat he gives ("Valparaiso and Brazil ") 

 also agrees, I have used his name without much hesita- 

 tion ; he describes the upper surface as being " piceous, 

 with a violet tint " ; this is sometimes the case, but more 

 frequently it is nearly pure shining black. 



The species appears to be a common one. 



