8 



OK r H OPT Ii K A 



unainicd in [he male, spineil ni the female, median carina present moie or less distineth-. 'J'egmina oi 

 the male elongate, h3'aline except tor the costal lield which is opacpie, the a]iex acute or rounded, 

 stigma not indicated; of the female hardly exceeding the abdomen, broad, o])aque except for the 

 presence of small hyaline areola' betw een the veins of the anal and a variable portion of the discoidal 

 lields, costal held nearly a half the width of the tegmen, a])ex acute or obtuseh' rounded, stigma i)resent, 

 longitudinal. Wings of the male hyaline, extending some distance beyond the tegmina, opaque on or 

 near the margins at the apex: wings of the female projecting beyond the tegmina. the exjiosed area being 

 either rounded, obtuse-angulate and broader than long or acute angulate and longer than broad, the 

 exposed apex opaque, the remainder hyaline fasciculate with color. .Abdomen of the male elongate, 

 of the female broad, depressed. Limbs of both sexes slender: anteiior coxae armed on th(> vential margin 

 with low spines of two sizes in the female, ot one size in the male; anterior femora armed with four 

 discoidal spines, the lateral face \\ ith tour spines, the internal face w ith fourteen to sixteen spines of 

 two sizes; anterior tibia- (without a])ical claw) slightly less than halt the femoial length. ^ledian and 

 ])osterioi' limbs slender and simple; tibia' multicarinate. 



Type of the genus : O. nibiciDida (Stoll). 



Geographical distribution of species. — Eighf s})ecies are known 



1. O. nihicuuda(S\.o]\). Xatuur. .Afbeeld. Beschr. Spooken en Wandel. Blad. 



pp. 73, 79. pi. 25, f. 96 (i8i3) {Mantis). 



ruhicuiidd, .Saussure, Mém. Hist. Nat. Me.\. Mant. Amer. p. 87, pi. i, f. 6 

 (1871) (Sttigmatoptera dilula <3 not Q); Westwood, Revis. Ins. Fam. 

 Mant. p. i5, pi. 6, f. 3 (Ö) (18S9). 



2. O. diibiosa (Gigiio-Tos), Boll. Mus. Zool. Anat. Comp. Torino, Vol. i3, 



no. 3ii , p. 18 (1898). 



3. O. acutipainis (Stal), Bihang Svenska Vet.-Akad. Handl. \'ol. 4. no. 10, 



p. 71 (1877). 



4. O. media (Stal), ibidem, p. 71 (1877). 



5. O. obtusa (Stal), ibidem, p. 72 (1877). 



6. O. lobe/er, Reim, Froc. .Acad. Nat. ,Sc. Philad. 1907, p. 1 5g, ft. 3, 4(1907). 



- Plate, Fig. I I . 



7. O. iord-//// (Ciiglio-Tos). Boll. Mus. Zool. Anat. ("omp. Torino, \'ol. 12, 



no. 3o2, p. I 5 ( 1897). 



8. O. /"ara^'v/rtiY^.ws ( Brancsik), Jahresh . Xatui w . A'er. Trencsén, \'ol. 19-20, 



p. '14 . t. I , f. 10 (1898). 



from the Neotroi)ical region. 



British Guiana. Surinam, 

 Cayenne. Brazil, Ecua- 

 dor, northern .Argentina. 



\"alley of .Santiago, Ecua- 

 dor. 

 Peiu. 



Sao Paulo, Brazil. 

 Brazil. 



Sapuca\', Paraguay. 



Northern Argentina and 



southern Bolivia. 

 A su n c i on . Pa ra gu a-s- . 



3. Genus PAROXYOPSIS, nov. gen. 



Characters. — General form and structure much as in Oxvo/>s!s. Kyes producetl, but with the 

 apices rounded. Tegmina with the costal field narrow, one-third to one-fourth the total width of the 

 tegmen and densely reticulate with no oblique veins; stigma transverse. Posterior lemora with a small 

 lobe at the apex of the inferior carina. 



Geographical distribution of species. — A single species is at present known to lielong to 

 this genus, occurring in the Neotropical region. 



I. P. icierica (Saussure & Zehntner). Biol. Centr.-Amer. Orth. \'ol. i, South America : Urucum, 

 p. 191 (1894). Matto Grosso, P>razil. 



icieiica, Giglio-Tos, Boll. Mus. Zool. .Anat. Comj). Torino, Vol. i5, 

 no. 377, p. 2 (1900). 



