PROC. EXT. SOC. WASH., VOL. 21, NO. 4, APR., 1919 93 



more species and figured all the North American forms. In 1907, 

 Kerremans (Mon. Bupr. Tome II, pp. 556-5(59) placed the four 

 South American species together with the five species from North 

 American under the genus Tyndaris, but since Kerremans never 

 saw any of the North American species, it is easily explained why 

 he placed these two forms together under the same genus. 



Paratyndaris coursetiae, new species. 



Male. Form robust, cylindrical, narrower posteriorly, black, clothed with 

 silvery pubescence. Head convex, surface shining, slightly aeneous, coarsely 

 punctured and clothed with recumbent silvery pubescence. Antennae 

 slender, black, very short, and not reaching to the middle of the prothorax, 

 serrate from the seventh joint. Scutellum small, slightly oblong. Prothorax 

 a little wider than long; sides moderately arcuate, broadest a little before 

 the middle, narrowing gradually towards the base; hind angles rectangular; 

 front angles broadly rounded ; disc convex, surface shining, densely punctured 

 and clothed with recumbent silvery pubescence; without a median depressed 

 line, but with trace of a smooth spot at base, just in front of scutellum. Elytra 

 at base, as wide as prothorax, gradually narrower posteriorly, black, each 

 elytron with an oblong red spot on lateral margin about one-third of the 

 distance from prothorax to apex, clothed with recumbent silvery pubescence, 

 giving it a cinereous appearance; apices separately rounded and quadridentate; 

 disc moderately convex, irregularly striate, striae punctate, intervals narrow 

 and rugose. Beneath coarsely punctured and clothed with recumbent 

 silvery pubescence. Third abdominal segment at middle with a large widely 

 rounded lobe on the posterior margin, which is densely, very finely punctured 

 and entirely denuded of pubescence. This lobe projects over the fourth 

 segment, reaching nearly to the median part and may be a secondary sexual 

 character. Legs black, with a slight violaceous lustre. 



Length 5.5 mm.; width 2 mm. 



Habitat. Tucker Canyon, vSanta Catalina Mts., Arizona. 

 F. C. Craighead and Geo. Hofer Collectors. 



Type Cat. No. 22097 U. S. Nat. Mus. 



Described from a single male specimen recorded under Bureau 

 of Entomology No. Hopk. U. S. KJGoOz and reared July 17, 1918, 

 from pupae collected by Messrs. Craighead and Hofer on June 

 20, 1918 in dead stems of a legume (Coursetia microphylla.) 



The species resembles olneyae and is closely allied to it, but 

 differs from it, and the allied species, cincta and prosopis, in the 

 absence of the linear median thoracic depression. From barberi 

 and chamaeleonis it can be easily distinguished by the markings 

 of the elytra and also by the intervals of the elytra being very 

 narrow, irregular and rugose. 



