1920.] NATURAL SCIENCES OF PHILADELPHIA. 63 



After careful study of the literature, we place this insect under 

 Giglio-Tos' sorongana, though that species is described from fe- 

 males and the description palpably insufficient. 



No difference of note in the present example is remarked, except 

 that the types are described as having the metazona distinctly 

 tectiform carinate, while in the present specimen it is evenly rounded 

 with carination subobsolete. Such difference between the sexes 

 is shown by the series of H. laevicollis Saussure before us, so that we 

 feel our present association to be justified. 



When compared with males of laevicollis, the present male is seen 

 to represent a species belonging to the same phylum. It differs 

 in the facial scutellum being of the same proportions but with parallel 

 vertical carinae weak but distinct, broken slightly below the middle, 

 with brief ventral portions slightly the more developed, much as 

 in H. venosa (Olivier). The pronotum is slightly smaller in pro- 

 portion to the rest of the body but of exactly the same character, 

 with caudal margin of shaft showing only a very weak darker suf- 

 fusion. The denticulations of the cephalic coxae are more numerous 

 (eight and nine), irregular and very slightly more slender. The 

 tegmina have the discoidal field transparent, hyaline and colorless, 

 while the stigma is much less conspicuous, narrower (3.1 by 4, in 

 laevicollis 3.5 by 1.1 mm.) and the costal margins of the tegmina 

 are minutely denticulate, this well developed meso-distad. 



Length of body 61, length of pronotum 20.2, width of pronotum 

 5.9, length of tegmen 46.7, width of tegminal marginal field 3.5, 

 length of cephaHc femur 17.3, length of caudal femur 15.4 mm. 



The Tamolana Group of the Genus Hierodula. 



Of the species assigned by Giglio-Tos to his subgenus Rhom- 

 hoderula, of his genus Par-hierodula, but two, saussureii Kirby and 

 exiensicollis Serville, are referable to Rhomhodera. 



The others constitute a group, reaching its maximum develop- 

 ment in Papua, which includes types, annectant to varying degrees, 

 between the typical forms of Hierodula and Rhomhodera. Of these, 

 atricoxis Wood-Mason shows the most decided approach toward 

 the type of pronotal development characteristic of Rhomhodera. 



These species may represent a valid generic unit or a subgenus 

 of Hierodula, but for the present we believe it best to assign them 

 as a group of that genus, which we term the Tamolana Group. All 

 are distinguished by the pronotal expansion being slightly to de- 



