828 Tlie Insect Faima of Van Biemen's Land. 



which have been or will be separated from them : on the 

 other hand^ however^ they will be enriched by the addition 

 of Sarrotrium and the analagous genera Corticus and Coxelus ; 

 these have four joints in each foot^ and assimilate with 

 Biodesma, which Latreille has already rightly numbered 

 among the Xylopliagi. They approach most closely to 

 Colydium, Synchita, and others {^') : one of the connecting 

 forms is Meijc^ rugom, (f) a native of V. D. Land^ and not 

 of the East Indies^ as Latreille asserts. Insects having feet 

 similar to those of the Heteromerce are not entirely excluded 

 from this family, as is shown in a species of a new genus, 

 Latometus, which maintains a central position between 

 SarrotHnm and Si/ncJiita. 



A third species belonging to this division is nearly 

 related to our Cerylon histeroides ; I have formed a new 

 genus, Tycnomerus,iox'\\,w\^ several other species, of which 

 some are American. A fourth new Van Diemen^s Land 

 species of this division belongs to D'itovia. 



Van Diemen's Land has afforded us some interesting species 

 of (y«c«f;«<?,an other family of the J^/o^/ia^i; the most important 

 is a new genus, Platisus, which is most intimately connected 

 with Cucnjus, both in size, form, and the difference of the 

 foot-joints in the two sexes : it is founded on a single 

 species, represented in our collection by specimens of both 

 sexes. Two other species of this family belong to the widely 

 spread, though not rich genus Brontes ; a third to 

 JDendrophagus, its position being determined by the antennae 

 joints ; and lastly, we must include Silvanus, of which our 

 collection has received a new species, slightly differing in 

 form from its type. 



(♦) I hope to give a further account of the stematic relations of these bisects in 

 the next volume of my " Insects of the Mark of Brandenburg," 

 (+) Latreille Genera Crust, et Ins, III. p 17, t. II. f. 1. 



