118 COLOMBIAN DERMAPTERA AND ORTHOPTERA 



Length of body, 25; pronotuin, 8; tegmen, 20.2. Width of 

 pronotum, 12.9; tegmen, 10 mm. 



BLABERINAE 

 Blaberus giganteus (Linnaeus) 

 1758. [Blatta] giganlea Linnaeus, Syst. Nat., ed. x, i, p. 424. [America.] 



Cincinnati, Sierra Nevada de Santa Marta, Magdalena, VII, 

 10, 1913, (M. A. Carriker Jr.; fimdacion), 5 9,1 juv. d",^* [Hebard 

 Cln.]. 



This insect differs from B. colosseiis (IlUger) only in the average 

 proportionately broader pronotiim and wider marginal field of 

 the tegmina. It is possible that that name may be found invalid, 

 representing a mere variation of the present species. Much 

 larger series of both conditions must be had before this can l^e 

 finally settled. 

 Blaberus colosseus (lUigor) 



1802. Blatta colossea Illiger, Mag. Insektenkunde, i, p. 186. [Demerara[ = 

 British Guiana].] 



Muzo, Boyaca, 2700 feet, VI, 1915, (from A. Maria), Id", 

 [Hebard Cln.]. 



The measurements of this specimen are: length of body, 59; 

 pronotum, 15.8; tegmen, 66.7. Width of pronotum, 21.6; teg- 

 men, 22; marginal field of tegmen, 6.8 mm. Length contained in 

 width of pronotum 1.37 times. 



Blaberus discoidalis Serville 



1839. Blabera discoidalis Serville, Hist. Nat. Ins., Orth., p. 76. [ 9 , Santo 

 Domingo.] 



Cincinnati, Sierra Nevada de Santa Marta, Magdalena, 4000 

 to 5000 feet, VII, 1913, (M. A. Carriker Jr.), 2d', [Hebard Cln.]. 



Susumuco, Cundinamarca, 2600 feet, XI, 25, 1916, (from A. 

 Maria), 5d, [Hebard Cln.]. 



Fusugasuga, Cundinamarca, 5464 feet, XII, 1916, (from A. 

 Maria), 39, [Hebard Cln.]. 



The Cincinnati specimens are exceptionally large for the spe- 

 cies, representing the optimum condition, and are similar to 

 material recently recorded advcntive in the United States from 

 Colombia.^^ The remainder of the series is typical, the pronotal 

 spot showing considerable variation, as is usual, in extent and 

 contour. 



'^ This series has been fully discussed; Ent. News, xxvii, p. 290, (1916). 

 3» Mem. Am. Ent. Soc, No. 2, p. 273, (1917). 



