MORGAN HEBARD 351 



and the ventro-exteriuil margm with a similar, Init lower, distal 

 lobe. The caudal tibiae also have (two or three) small dorsal 

 lobes, these conspicuous only on the sniistral member. 



The female before us is more lichenose in appearance than the 

 male, the antennae grayish with suffusions of brown. In both 

 sexes the ocelli are small l)ut distinct, while on each side of the 

 median ocellus, between it and the antennal socket, is a long 

 tubercle, like a minute horn. As in other bark-like or lichen-like 

 forms, the coloration is probably subject to very decided in- 

 dividual variation. The same is true of the lobes of the liml)s, 

 in such species as the present. 



Length of body, cf (estimated) 53; 9 75.7; length of pronotum, 

 d" 2.8, 9 3.9; length of mesonotum, cT 7.7, 9 10; length of 

 'tegmen, cf 5.3, 9 8.5; length of wing, d" 31.8, 9 49.2; length 

 of cephalic femur, d^ 11.1 9 13.1; width of cephalic femur, 

 d' .9, 9 2; length of caudal femur, cT 8.8, 9 10.8; length of 

 caudal tibia, cT 7.5, 9 8.7; length of caudal tarsal joints, cf 

 5.4, 9 5.9; length of caudal metatarsus, d^ 2.3, 9 2.3 mm. 



Isagoras rignieri (Redtenbacher) 



190(3. Xerosoma vignieri Redtenbacher, Insektenfamilie der Phasmiden, p. 

 144. [d^; Paya, Darien, Panama.] 



The species does not agree with the genotype of Xerosoma, the 

 Brazilian canaliculatum of Serville, but shows no feature by 

 which it can be separated from Isagoras Stal, as defined by 

 Redtenbacher.^^ We, therefore, make the generic reassignment 

 noted above. 



Porto Bello, Panama, II, 6, 1911, (Schwarz), 1 d" ; Ul, 2 and 

 18, 1911, (Busck), 2 juv. d". 



The adult specimen, for a lichenose form, agrees very closely 

 with the originally described male. It ditTers mainly in having 

 the mesonotal tubercles no darker than the other portions, the 

 costal margin of the tegmina and the anterior portions of the 

 wings without a pale marking,-'-* while the minute lobes of the 

 median and caudal limbs are reduced to one and two on the 



-^ Redtenbacher has very possibly included several generic units under 

 Isagornf!, but we do not have material of a suflicient number of species to 

 determine this definitely. 



-^ The tegmina having a large, transverse, pale area at the shoulders across 

 the dorsal surface. 



TUANS. AM. ENT. SOC, XLVIII. 



