84 Mr. G. J. Arrow on the Oenus Rhysodes. 



Although the family ajipears to be represented in every 

 part of the world, its gcograpliical distribution has given no 

 support whatever to those who have attempted its classifica- 

 tion. It is remarkable that, although the European species 

 described amount only to five, each of the four genera into 

 which the family has been divided is represented among them 

 (for CUnidium nmrgwecolle, Reitter, is very near the type of 

 Faiimaire's genus Bhysodiastes). The distribution of the 

 Rhysodidw, indeed, is altogether highly peculiar. Tropical 

 and South America alone seeming to show any individuality 

 in its representatives, which belong only to the apterous 

 section. 1'he South-American qiwdn'striatus, though hitherto 

 remaining in Bhysodes, also belongs to Rhysodiastes, as well 

 as Clinidium costatuni of Chevrolat (not Gudrin, as in 

 Mr. Lewis's catalogue). 



Several other rectifications require to be made in the list of 

 species of Rhysodes given by Mr. Lewis. R. proprius, Broun 

 (wrongly quoted ^'' jyrohrius " and referred to p. 215 instead 

 of p. 210 in the ' Manual of New Zealand Coleoptera '), must 

 be removed to Clinidium. On the other hand, R. pensus, 

 ]3roun, has been incorrectly transferred to the latter genus as 

 synonymous with C. arcuatum, Chev. This is evidently a 

 mere slip, as there is no connexion between the two. R. pen- 

 sus is one of the niost easily recognizable species of Rhysodes. 

 R. tuhericeps, Fairm., has already been announced by its 

 author, who was himself responsible for sinking the name, as 

 distinct from R. canal iculatus, Cast. No reference to the last 

 species is given by Mr. Lewis ; it was described in the 

 * Revue Entomologique,' vol. iv. p. 56. 



Of the new species described here three are from India, and 

 are the first hitherto recorded from that country. The metro- 

 polis of the family is evidently the Lidian Ocean, where it 

 seems the species will ultimately be found very numerous. 



1 he lollowing table will, 1 hope, simplify the identification 

 of the new forms : to increase its usefulness I have included 

 all the species of the genus known to me : — 



Head with lateral lobes approxiuiaiing before and 

 behind; median elevation ending posteriorly 



beyond hind border eminens, liroun. 



at hind border sidcatus, Fabr. 



comes, Lewis, 

 before posterior pit strabus, Newm. 



arnudus, sp. n. 



crasnusciilus, Lewis, 

 in poi-teri(.r pit malaicus, sp. n. 



t)atchia7ivH, sj). n. 



7iicobarensis, (troiiv. 



