1911.] 



NATURAL SCIENCES OF PHILADELPHIA. 



327 



JALLA Giglio-Tos. 



Jalla radiosa Giglio-Tos. 



1907. J[alla] radiosa Giglio-Tos, Bollett. Mus. Zool. ed Anat. Comp., Torino, 

 XXII, nr. 563, p. 14. [Kazungula, Upper Zambesi.] 



Zambesia. One female. 



This hitherto unique genus and species is a most peculiar member of 

 the Vatinae, showing no close relationship to any of the other genera. 

 The general outline of the pronotum is strikingly like that of the 

 Orthoderine genera Humbertiella and Theopompa, but the excrescences 

 and spines are radically different from anything found in those genera, 

 while the other characters show no sort of analogous development. 



As this is the first recognized female of the genus, a few notes made 

 in comparison with the description of the male may be of service : 



Ocelli smaller (sexual). Pronotum less distinctly medio-longitudi- 

 nally sulcate caudad; margins of same non-ciliate. Tegmina short, 

 reaching but half-way to the apex of the abdomen, ovate, coriaceous, 

 apex broadly rounded ; costal field rather narrow, this area, the region 

 of the principal veins and the apical region with a number of scattered 

 tuberculiform excrescences. Wings very slightly surpassing the tips 

 of the tegmina, the exposed area of similar coriaceous structure to 

 that of the tegmina. Internal cephalic femoral margin with fourteen 

 spines, including the distal one; internal cephalic tibial margin with 

 ten spines, exclusive of apical claw; abdomen strongly depressed, 

 lateral angles rotundato-rectangulate, dorsal surface with longitudinal 

 series of linear tubercles on the caudal portion of the segments. 



Length of body, 

 Length of pronotum, . 

 Greatest width of pronotum, 

 Length of tegmen, . 

 Greatest width of tegmen 

 Length of cephalic femur. 



IDOLOMORPHA Burmeister. 



Idolomorpha dentifrons Saussure and Zehntner. 



1895. Idolomorpha dentifrons Saussure and Zehntner, in Grandidier, Hist. 

 Phys. Nat. et Polit. Madagascar, Orth., Blatt.-Mant., pp. 242, 244. 

 [Zanzibar.] 



Mombasa. One female. [Hebard Collection.] 



This species, the only East African one of the genus, is known to 

 range from Delagoa Bay to the White Nile and the Ogaden country. 



