OSSA. 279 



Genus OSSA. 



Ossa, Motsch. Bull. Soc. Xat. Mose. xxxvi, 3, p. 106 (18G3_) ; MelicJi. 

 Horn. Faun. Ceylon, p. 49 (1903). 



Type, 0. dimidiata, Motsch. 



Distrilnition. Ceylon. 



"Horizontal and enlarged form of CLvias, but the anterior 

 halves of the tegmiua of a cartilaginous consistence, shiniug, not 

 transparent ; head horizontal, depressed, about four distinct 

 superlicies, vertex produced as an obtuse cone and margined ; 

 face very horizontal, very depressed, elliptical, the margins 

 prominent and with a medial longitudinal carination ; ocelli 

 absent; rostrum robust; antennje inserted laterally under the 

 eyes ; posterior margin of head truncate at about middle of 

 eyes and hidden in a kind of forked hood, which is produced 

 laterally just beyond the middle of the pronotum, having the 

 posterior angles dilated and reflected ; thorax much larger than 

 head, triangular, tricarinate ; scutellum very small, triangular ; 

 tegmina ampliated at about middle, their apices rounded, veins on 

 the anterior cartilaginous area strongl}^ elevated, the cellular areas 

 very long, nearly concave, veins on the posterior transparent 

 area less elevated, all longitudinal; body beneath elougately oval; 

 legs not longer than the tegmina, posterior tibiae armed with two 

 spines." (IlutscJioidshj.) 



1824. Ossa dimidiata, Motsch. Bull. Soc Nat. JIosc. xxxvi, 3, p. 107, 

 t. xi, f . 23 (1863) ; Melich. Horn. Faun. Ceylon, p. 49, t. ii, f. 10, a 

 (1903). 



" Elongate, dilate, tectiform, depressed, shining, green ; head 



and sutures of the thorax 

 subochraceous ; tegmina pos- 

 teriorly hyaline, triangular, infus- 

 cate, apex paler ; face, eyes, 

 body beneath, and legs slightly 

 white; head triangularly arcuated, 

 depressed, longitudinally tricari- 

 nate, posteriorly between eyes 

 straightly truncate, covered with 

 furcate hood, laterally at base of 

 tegmina much prolonged, hood 

 medially widely tricarinate ; 

 Y'lg. 1-12.— Ossa dimidiata. pronotum broader than head, 



triangular, posteriorly arcuated, 

 medially tricarinate, the carinae anteriorly arcuately united ; meso- 

 notum minute, triangular ; tegmina towards middle distinctly 

 ampliated, posteriorly subparallel, subhyaline, anteriorly coriaceous, 

 shining, with the veins elevated, the suture canaliculate, longi- 

 tudinally tricarinate." {JlotscJioulsl'y.) 

 Length " 2| lin." 



Hcdj. Ceylon ; Patannas Mount (Jide Motsch.). 

 I have not seen this species but have reproduced the original 

 description of Motschoulsky, and the figure as given by Melichar. 



