224 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



in Gay's " Historia fisica de Chili." Signoret united Ditomotarsus 

 jmnctivenfris Spinola with gayi Spinola, apparently because he had 

 seen a specimen of puTwtiventris wrongly labeled gayi and without 

 comparing Spinola's descriptions. These two species are even gener- 

 ically distinct. The figure Sa on plate 1, which represents gayi in 

 profile, clearly shows that it is a Planois, and this is the only Chilean 

 genus tallying with the statement in the specific diagnosis and de- 

 scription of gayi: " Antennarum articulo primo secundum longi- 

 tudine aequante — primero y segundo articulos de las antenas de 

 igual longitud." It seems uncertain, however, whether gayi is the 

 same species as Planois himaculatus Signoret. D. puncfiventris is 

 the species standing in almost all collections under the name gayu 

 but the figure 9 on plate 1, said in Gay's work to be that of puncti- 

 venffis, has been wrongly numbered, and has nothing to do with 

 punctiventris ; this is quite evident if it is compared with the descrip- 

 tion. There is fortunately no reason to change the generic nomen- 

 clature as now standing in our catalogues; D. pim-ctiventrls must be 

 considered the type of Ditomotarsus^ and the following synonymy 

 will result: 



Ditomotarsus Spinola. 

 {Ruscoba Stai). 

 punctiventris Spinola. 

 sangnineiven tris StSl. 

 gayi Signoret (not Spinola). 



implnviafns Blanchard. 

 Planois Signoret. 



(Diaomotarsus Spinola, ex p.) 

 himaculatus Signoret. 

 gayi Spinola. 



Subfamily Urolabidinae. 



UROSTYLIS BLATTIFORMIS, new species. 



Above depressed and hairless, grass-green; dorsum of abdomen, 

 connexivum and underside of body yellow or greenish testaceous; 

 corium with several tortuous vermicular partly confluent ochraceous 

 bands mostly placed longitudinally; two small spots before middle 

 of pronotum, a lateral spot near apical angles of the connexival and 

 ventral segments, a sharply defined sublateral vitta to propleurae, a 

 lateral spot to metapleurea, and a series of spots, one in each seg- 

 ment, on either side of the venter between its middle and the lateral 

 margins, black. Head impunctate, very finely and superficially trans- 

 versely wrinkled, smooth within the eyes, and with a very fine and 

 narrow curved impressed line before each ocellus; antennae fuscous 

 black, first joint and basal fourth of second ferruginous, first with 

 or without a fuscous vitta on the outer side, base of third joint 

 narrowly, base of fourth and fifth joints broadly pale testaceous, first 

 joint as long as pronotum, second as long as first, third half the 

 length of second, fourth distinctly shorter than second, fifth shorter 

 than fourth; rostrum reaching a little beyond anterior coxae, third 



