324 



PROCEEDINGS OF THE ACADEMY OF 



[April. 



This specimen is clearly a representative of the genus Oxyophthal- 

 mus, which otherwise is only known from India and Ceylon, and does 

 not belong to Paroxyophthalmus collaris (Saussure) as surmised by 

 Werner. 6 The form of the pronotum is decidedly the subequal non- 

 attenuate type found in Oxyophthalmus. 



This species differs from gracilis, the type of the genus, in having 

 the head less arcuate emarginate dorsad, the eyes less produced with 

 divergent points, the pronotum shorter and the face distinctively 

 colored. 



Size small; form slender. Head with the exposed dorsal length 

 contained about three and one-half times in the length of the pronotum, 

 occipital line moderately subarcuate emarginate, the greater (median) 

 portion being truncate; ocelli large, arranged in a triangle; facial shield 

 slightly higher than broad, dorsal margin very narrowly produced 

 mesad, slightly arcuato-emarginate ventrad of each antennal base, 

 lateral and ventral margins subtruncate; antennae at least two-thirds 

 as long as the body (incomplete in type) ; eyes elongato-ovate in basal 

 outline, not prominent laterad, but slightly produced and bluntly 

 mammillate dorsad, the corneal points divergent. Pronotum elongate, 

 roughly subequal, collar about as broad as the supracoxal width, 

 shaft slightly narrower than the width of cephalic portion of pronotum, 



cephalic margin of same moderately 

 arcuate, caudal margin arcuate laterad, 

 truncate mesad ; no medio-longitudinal 

 sulcus or carina present; greatest 

 pronotal width contained slightly 

 more than three times in the length. 

 Tegmina equal to twice the length of 

 the head and pronotum together, 

 narrow, hyaline; costal field broad in 

 proximal half; apex narrowly rounded. 

 Wings extending beyond tegmina a 

 distance equal to the exposed dorsal 

 length of head ; apex narrowly rounded. 

 Apex of abdomen mutilated. Cephalic 

 coxse not quite reaching to the caudal 

 margin of pronotum, cephalic margin 

 unarmed ; cephalic femora slightly ex- 

 ceeding coxae in length, slender, dorsal margin slightly arcuate in 

 proximal two-thirds, discoidal spines four in number and placed 



6 Sitzungsb. K. Akad. Wissensch., Wien, Math.-nat. KL, CXVI, Abt, 1, p. 256. 



Fig. 1. — Oxyophthalmus somali- 

 cus n. sp. Dorsal view of 

 head, pronotum and cephalic 

 limb. (X 6.) 



