92 THE BLATTIDAE OF PANAMA 



Gatun, Canal Zone, Panama, VII, 25 to 31, 1916, (Harrower; under bark on tree), 



icf. 



Cabima, Pan., V, 21, 191 1, (Busck), i large juv. d". 



Compared with the closely allied M. longipennis (Walker), of 

 which a female from Ecuador is at hand, Costa Rican females of the 

 present huge species are found to differ only in the much broader 

 head, with interocular space much broader. ^^^ 



The great expanse of this insect is realized when we consider that 

 the tegmina of the present male measure 82 by 33.2 millimeters. 



Subfamily EPILAMPRINAE 



AUDREIA Shelford 



1910, Audreia Shelford, Gen. Ins., loime fasc, Orthoptera, Blattidae, Epilamp- 



rinae, p. 11. 



The genus included eight species. Genotype: here selected. — 

 Audreia carinulata [Calolampra carijiulata] (Saussure). 



First steps only have as yet been taken to separate properly the 

 generic units related to Epilampra, in which partial to complete 

 reduction in the organs of flight has occurred. At the present 

 time, as was the case with Shelford in 1910, insufficient material is 

 at hand to allow a proper revision to be made. A number of 

 species are before us which must be assigned to this genus as char- 

 acterized by Shelford, but which indicate the presence of at least 

 four distinctive groups, though females alone of the majority of 

 species are represented. Larger series and male examples will be 

 needed before it can be determined whether these groups represent 

 distinct genera, or are simply striking divisions in the genus Audreia, 

 comparable to the many striking divisions in the genus Epilampra 

 as at present defined. 



Added difficulty is found in the fact that a similar situation is 

 encountered in the allied genus Calolampra Saussure, the genotype 

 of which is the Australian C. irrorata (Fabricius).^!*^ 



Whether the tegmina and wings are reduced, truncate, lateral 

 and lobiform, or absent, are features which in the Blattidae are 

 known to be often utterly worthless from a generic standpoint. 



1" Interocular width: M. blaberoides, (^ , 1.7, 9 , 2.4; M. longipennis, 9,14 niilliniL'ters. 

 "* The genoty[>c of Calolampra, Epilampra gracilis Brunner, a synonym of irrorata 

 • according to Shelford, was selected by Rehn, Trans. Am. Ent. Soc, xxix, p. 274, (1903). 



