SUBFAMILY I. M ANTING. 123 



and wings more strongly hyaline. Pronotum of $ subcarinate; of 9 

 strongly carinate behind the transverse impression, in front of which it is 

 bicarinate with the carinse granulate. Tegmina with the marginal field 

 very large; wings with the discoidal vein biramose- Length of body, $, 

 8387, 9, 85104; of pronotum, $, 2730, 9, 2731; of tegmina, $, GO 

 G2, 9, 5864 mm. 



This large Asiatic species was accidentally introduced by a 

 nurseryman at Mt. Airy, near Philadelphia, Pa., about 1896, and 

 seems to have become thoroughly established. Laurent states 

 (Ent. News, 1002, G2) that at Mt. Airy it "likes blackberry and 

 briar bushes as a place of abode and avoids low ground with low 

 herbage." From 150 to 300 young emerge from each egg mass in 

 June, and mature about the first of October. It is a very bene- 

 ficial insect and egg masses from the Mt. Airy colony have been 

 introduced at many points in New Jersey, New York and Con- 

 necticut, but at no place do they seem to have done as well as at 

 the point of original introduction. Davis (1918) has given an 

 interesting account of the attempts to increase the distribution of 

 this beneficial mantis in the region mentioned. Saussure's types 

 were from Ningpo, China, and it is a well known insect in that 

 country and Japan. Although a native of a semi-tropical region, 

 it seems to be able to withstand without difficulty the rigors of 

 the Pennsylvania winters. 



Weiss (1914) has given a description of the egg-case of P. sinensis 

 stating that it is peculiar in that it consists of a central, somewhat horny 

 core containing the eggs. These are arranged in from 12 to 18 layers, 

 averaging 15 eggs each, or a total average of 225 eggs in each case. The 

 central core is surrounded by a porous rind or outer fibrous envelope 

 "which undoubtedly serves to protect the eggs from moisture and sudden 

 changes in temperature." A number of tests made by him showed that the 

 interiors of nests entirely immersed in water for an hour and three-quar- 

 ters remained perfectly dry. At the end of two hours the outer rind became 

 moist but the water had not reached the core. The average thickness of 

 the core was 12 mm., and of the enveloping rind 5.6 mm., while the aver- 

 age weight of a nest or case was 1.63 grams, of a core, 1.34 grams and of a 

 rind .29 grams, "showing that five-sixths of the total weight consists of the 

 core containing the eggs, the remaining sixth of the porous protecting 

 rind." 



IV. OALLIMAXTIS Stal, 1877, 39. (Gr., "handsome'' -f "prophet"! 



Short, slender bodied species having the head rather small, 

 compressed; antenna? shorter than pronoturn in both sexes; face 

 deeply concave between the eyes; ocelli of medium size. Pronotum 

 short, its basal portion very slender, the apical one as wide again, 



