MORGAN HEBARD I03 



greatest width of abdomen, 21.6; length of caudal tibia, 17.7; ventral length of 

 caudal metatarsus, 6 millimeters. 



The type of this interesting species is uniciue. 



Periplaneta americana (Linnaeus) 



1758. [Blatta] americana Linnaeus, Syst. Nat., Ed. X, |). 424. [America.] 



1917. Periplaneta aviericana Hebard, Mem. Am. Ent. Soc, 2, p. 178, \A. vii, figs. 



3 to II. (Detailed diagnosis.) 



Gatun, Canal Zone, Panama, VII, 28 to \'III, 22, 1916, (Harrower), 30^, 3 9, 



1 juv. 



Balboa, C. Z., Pan., \1, 8, 1916, (Harrower), i cf . 



This and the following three species are domiciliary insects, 

 widely distributed through tropical America. 



Periplaneta brunnea Burmeister 



1838. P[criplancla] brunnea Burmeister, Handb. Ent., ii, abth. ii, [)t. I, j). 503. 



[cf, 9 ; Chile; Demerara [ = British Guiana].] 

 1896. P[eriplaneta\ iriincata Griffini, Boll. Mus. Zool. Anat. comp. Univ. Torino, ix, 



no. 236, p. 4. [cf, 9 ; Rio Lara, Darien.] 

 1917. Periplaneta brunnea Hebard. Mem. Am. Ent. Soc, 2, p. 182, pi. vii, figs. 



12 to 16. (Detailed diagnosis.) 



Porto Bcllo, Panama, III. 18, 1911, (Busck), i cf . 



Gatun, Canal Zone, Pan.. VHI, 6 to 22, 1916. (Harrower), ^d'. 



Periplaneta australasiae (Fabricius) 



1775. [Blatta] australasiae Fabricius, Syst. Ent., p. 271. [" In nave e mare Pacifico 



et regionibus incognitis revertente."] 

 1917. Periplaneta australasiae Hebard. Mem. Am. F2nt. Soc. 2, p. 185, i)l. vii. figs. 



17 to 19. (Detailed diagnosis.) 



Gatun. Canal Zone, Panama, VII, 2S to VIII, 22, 1916, (Harrower), i cf, i 9, 



2 juv. 



Rio Trinidad, Pan., VI, 6, 1912, (Busck), i d". 

 Argas, Pan., IV, 28, 191 1, (Busck), 2 juv. 



Subfamily PAXCHLORIXAE 



Pycnoscelus surinamensis (Linnaeus) 



1767. [Blatta] surinamensis Linnaeus, Syst. Nat., Ed. XII. p. 687. [Surinam.] 



191 7. Pycnoscelus' surinamensis Hebard, Mem. Am. Ent. Soc, 2, p. 193. pi. viii, 



fig. I. (Detailed diagnosis.) 



Canal Zone, Panama, i<;o7, (Busck), i 9. 



This is a circumtropical species, widely distributed throughout 

 tropical America. 



MEM. AM. ENT. SOC, 4. 



