24 



GENUS EUTRYXALIS, N. G. 



This generic name is suggested for the insect described, by 

 Giglio-Tos as Metaleptca m'nwr and another one which is 

 described herewith as EutryxaUH sfrigafa. The members of 

 this genus differ chiefly from those of MetaJeptea by the 

 characters mentioned in the table for the separation of the 

 genera of the sub-family Tryxalinae. 



Ell. minor Giglio-Tos. Bolletino dei Musei di Zoologia ed 

 Anatomia comparata della R. Universita di Torino, Vol. XII, 

 No. 302, jD. 23. (Collections of Schulz, Stempelmann and 

 Thomas. ) Common throughout the provinces north of the 

 Rio Colorado, and quite variable in color. 



En. sfrigata, n. sp. 



Several specimens of an insect that seems to be distinct 

 from the E. ininoi- G.-Tos were taken at Carcarana. These 

 specimens are of about the same size as that species but differ 

 in having the body somewhat slenderer ; and the legs and 

 body much more sharply carinated, also in being alternately 

 dark brown and light tetaceous striped and streaked, these 

 streaks extending from the tip of the vertex to the apices 

 of the tegmina, femora, and abdomen. On the occiput is a 

 central, narrow line of testaceous bordered on either side by 

 one of dusky, followed by a light, again bordered by dark, 

 almost black, then light, after which follows a dusky band, 

 then a light one which is continuous upon the lateral carinae 

 of pronotum and passes to one of the principal veins of 

 tegmina. Below this is a dusky stripe followed by a light 

 one, then by a dusky, again by a light and dusky, then the 

 lower margin of cheek and lateral lobe of pronotum broadly 

 light testaceous. In like manner the face with all of the 

 carinae are light, the interspaces dark ; the carinae of legs 

 light, the interspaces dark ; tegmina with all the principal 

 veins bordered narrowly by dark, with the intersi3aces or 

 fields yellow. 



Length: Female, body 27mm; pronotnm 4.75 mm; tegmina 

 21 mm; hind femora 14 mm; antennae 7mm. 



