314 PROCEEDINGS OF THE NATIONAL MUSEUM vol. lu 



related to argentinensis, but are easily distinguished by color patterns, 

 the absence of r-m cross vein, and structure of the male genitaha. 



One of the male para types measured only 2.5 mm. in length, being 

 one of tbe smallest Ogcodes specimens I have examined. There was no 

 significant difference noted in the para type males examined. 



Ogcodes (Ogcodes) chilensis Sabrosky 



Ogcodes chilensis Sabrosky, Rev. Chil. Hist. Nat. (1944), vol. 48, p. 318, 1945. 



Species of group ii. 



Types: Holotype d^, Chile (ex collection of Vicuna), also a para- 

 type cf, Panguipulli, Chile (A. Hollermayer) both in the collection 

 of Carlos Stuardo in Santiago, Chile. 



Discussion: I have not seen this species, but from the description 

 and from notes on the holotype furnished by Prof. Carlos Stuardo, 

 I feel quite sure it is a member of the eugonatus group. Its black to 

 reddish black thorax and the yellow or orange spots on the foremargin 

 of the mesonotum distinguish it from others of the region. 



Ogcodes {Ogcodes) triangularis Sabrosky 



Ogcodes triangularis Sabrosky, Rev. Chil. Hist. Nat. (1944), vol. 48, p. 317, 

 fig. 1, 1945. 



Type: Holotype cT, Malloco, Chile, Apr. 1, 1935 (C. Stuardo, CS). 



Discussion: Species of group iv (?). Even though this species 

 is known only from the holotype, it is quite distinct from the other 

 Neotropical forms as noted in the key to species above. It is appar- 

 ently closely related to kuscheli. Sabrosky noted that in color pattern 

 it resembled certain Acrocera species, and in this feature it also ap- 

 proaches 0. porteri. 



Not having seen the holotype, I am unable at present to place this 

 species in a group. However, judging from its apparent relationship 

 to kuscheli, I have placed it tentatively in the colei group. The 

 absence of vein Mi, however, suggests the eugonatus group, while the 

 rather distinct color markings might relate it to the porteri group or 

 to another closely related but unrecognized group. An examination of 

 the male genitalia A^dll no doubt quickly place this species in its 

 proper group. 



Ogcodes (Ogcodes) kuscheli Sabrosky 

 Plate figures 9, 59, 86 

 Ogcodes kuscheli Sabrosky, Rev. Cliil. Ent., vol. 1, p. 189, 1951. 



Types: Holot^^pe cf, allotype 9, and 4 cf, 1 9 paratypes, from 

 Masatierra Island, Juan Fernandez Islands, Chile (P. G. Kuschel). 

 (Holotype, allotype and 2 cf parat^^pes, Universidad de Chile collec- 

 tion in Santiago; 2cf , 1 9 paratypes, USNM.) 



