1893.] HYMENOPTERA OF THE FAMILY ODTNEEID.E. 687 



Odyisterus COLOCOLO. 



Odynenis cohcolo. Sauss. in Gay, p. 566 (1852). 

 This must be a notable species if specimens agree with the 

 description. 



Odynerus subpetiolatus. 



Odynerus subpetiolatus, Sanss. Vesp. i. p. 162 (1852). 



Odynenis coardatus, Sauss. in Gay, p. 565 (1852). 



De Saussure pubhshed two descriptions of this species almost 

 simultaneously, but he states that the name of 0. petiolatus was 

 published first. 



This species is common in Central Chile. It is very much like 

 0. labiatus, but smaller and has no tubercle beneath the second 

 abdominal segment. 



Odynerfs txjbehoueatus. 



Odynerus tichercidatus, Sauss. in Gay, p. 564 (1852). 



Allied to 0. humercdis, but smaller, with a small tubercle on the 

 upper surface of the first abdominal segment ; differs also in the 

 form of the metathorax and in colours. 



This species must be very rare, as I have lool\ed for it for many 

 years and have obtained only one specimen, which I caught near 

 Valparaiso. 



Odykertjs tuberculiventris. 



Eumenes tuhercuUventris, Spin. 1. c. p. 267 (1851). 



This common little species is easily recognized by its large 

 tubercle on the underside of the second abdominal segment in 

 both sexes, and by the yellow coxae of the males. 



Odynerus moling. 



Odynerus molince, Sauss. in Gay, p. 562 (1852). 



Odynerus molinius, Sauss. Vesp. iii. p. 251 (1854). 



Described from a single specimen, female, said to exist in the 

 Paris Museum. Prom the description it would appear to be 

 allied to 0. lahiatus, perhaps a variety. 



Odynerus labiatus. 



Odynerus lahiatus, Haliday, Trans. Linn. Soc. xvii. p. 323 (1837). 



Odynerus lacJiesis, St.-Parg. Hym. ii. p. 667 (1841). 



Odynerus marrjinicollis. Spin. 1. c. p. 256 (1851). 



One of the most common Chilian species. 



Odynerus caupolicanus, sp. nov. 



Allied to 0. lahiatus, but with yellow tegulge and yellow markings 

 on scutellum, postscutellum, and metathorax. 



S . Head and thorax coarsely punctured, clothed with short, 

 reddish hairs, dull black ; abdomen finely punctured, velvety. 

 Antennae and legs ferruginous, tarsi and coxae darker. Post- 



