50 PROCEEDINGS OF THE ACADEMY OF [Feb., 



12th Group, Tenoder^. 

 Tenodera" aridifolia (Stoll). 



1813. [Mantis] aridifolia Stoll, Natuur. Afbeeld. Beschr. Spooken, etc., 

 pp. 65, 78, pi. XXII, fig. 82. [East Indies.] 



Khasia Hills, Assam, 1 9 . 



Singapore, British Straits Settlements, Malay Peninsula, (from 

 C. F. Baker), 1 c^, 1 9. 



Labuan Island, British North Borneo, 1 d^, 2 9. 



Davao, Davao, Mindanao, (from C. F. Baker), 1 d^. 



Society Islands, 1 cf. 



The specimens from Labuan are decidedly larger than the others 

 of the present series. 



We would note that the proportionate difference between the 

 length of the shaft (metazona) of the pronotum and the cephalic 

 coxae for the present species and sinensis (Saussure) is e.xaggerated 

 in Giglio-Tos' key.^^ In both species the pronotal shaft is dis- 

 tinctly longer than the cephalic coxa, the degree averaging only 

 slightly greater in aridifolia. 



We find that sinensis is proportionately a heavier insect, with 

 pronotum distinctly shorter and broader. In a large series of 

 Japanese material of that species in the Philadelphia Collections, 

 we find that the width of the tegminal marginal field varies in the 

 females from 3.9 to 4.5 mm. 



In the females of aridifolia at hand, the width of the tegminal 

 marginal field is narrower, varying as follows: Khasia Hills, Assam, 

 3.8; Trong, Siam, 2.9 and 3.3; Singapore, Malay Peninsula, 2.7; 

 Goenong Soegi, Sumatra, 2.6; Labuan, Borneo, 2.4 and 2.6 mm. 

 This material would appear to indicate a gradual reduction in the 

 width of this field in material of the present species from conti- 

 nental Asia eastward through the Malayan Regions. 



*^ The type of Paratetiodera Rehn is sinensis, as originally designated by that 

 author (Proc. Acad. Nat. Sci. Phila.. 1903, p. 70.5, (1903)), not aridifolia as 

 later designated by Giglio-Tos (Bull. Soc. Ent. Italiana XLIII, p. 33, (1911)). 

 From the study of the considerable number of species now before us in the Phila- 

 delphia Collections, we believe that but one genus is represented in the regions 

 under consideration and follow Giglio-Tos in placing Paratenodera Rehn in 

 synonymy under Tenodera Burmeister, of which the genotype is fasciata (Olivier) 

 - atlenuata (Stoll). 



Though sinensis Saussure and atlenuata (Stoll) differ so widely in form and 

 general appearance, australasice (Leach) is seen to be an almost intermediate 

 type, while no combination of characters to divide the Asiatic species can be 

 found, sufficient to warrant generic separation. 



4" Bull. Soc. Ent. Italiana, XLIII, n. 33, (1911). 



