MORGAN HEBARD II5 



Blaberus colosseus (lUiger) 



1802. Blatta colossca Illigcr, Mag. Insektenkunde, i, p. 186. [Demerara ( = British 



Guiana).] 

 1916. Blaberus colosseus Hebard, Ent. News, xxvii, p. 291, pi. xv, figs. 2 to 5. 



[cf, 9; localities in Mexico, Guatemala, Costa Rica, Panama, X'cnezuela, 



Trinidad and French Guiana.] 



Alhajuela, Panama, III, 10, 1912, (Busck), i d", i 9, i small juv. 



Gorgona, Canal Zone, Pan., i d', [Academy of Natural Sciences of Philadelphia]. 



Paraiso, C. Z., Pan., IV, 4. 1912, (Busck), i juv. d', i small juv. 



Cabima, Pan., V, 18, 191 1, (Busck), i cf , i 9 with ootheca. 



Ancon, C. Z., Pan., i cf , [United States National Museum]. 



Chorrera, Pan., V, 17, 1912, (Busck), i 9. 



Bugaba, Chiriqui, Panama, (Wm. Schaus), i juv. cf. 



This is the largest Central American species of the genus, the 

 tcgmina in females of the present series measure sixty-six to seventy 

 millimeters in length. The insect is a beautiful immaculate 

 pale buffy brown, with shield-shaped area on disk of pronotum, 

 humeral trunk and a broad transverse band mesad between the 

 humeral veins of the tegmina when these are at rest, dark brown. 

 The ootheca is simply a mantle, holding a double row of eggs in 

 place in a strip, in the specimen before us eight millimeters in 

 width and extruded a distance of approximately twenty-four 

 millimeters. 



The immature condition of this species is distinctly patelliform 

 (see footnote 130, on page 109), with pronotum and lateral portions 

 of abdominal segments exceedingly lamellate, when compared with 

 immature examples of other species of the genus Blaberus. 



Blaberus discoidalis Serville 



1839. Blabcra discoidalis Serville, Hist. Nat. Ins.,Orth., p. 76. [ 9 , San Domingo.] 



1889. Blahera limhaia Bruner (not of Burmeister, 1838), Proc. U. S. Nat. Mus., 



xii, p. 188. [adult, Panama.] 

 1896. B[labera] trapezoidea Griffini (not of Burmeister, 1838), Boll. Mus. Zool. 



Anat. comp. I'niv. Torino, xi, no. 236, p. 4. [ 9 ; Punta di Sabana, Darien.] 

 1896. B[labcra\ rufescens Griffini, Boll. Mus. Zool. Anat. comp. Univ. Torino, xi, 



no. 236, p. 4. [9 ; Lake Pita, Darien.] 

 1916. Blaberus discoidalis Hebard, Ent. News, xxvii, p. 294. [Detailed diagnosis: 



cT, 9 : San Domingo, Porto Rico, Jamaica, Trinidad, Venezuela and Panama.] 



Pinogana, Darien, Panama, XII, 1915, (Munoz), I 9, i juv. d , [Hebard Collec- 

 tion]. 



Porto Bello, Pan., (Jennings), I d- 



MEM. AM. ENT. SOC, 4. 



