MALACOSOMA. 581 



1. Malacosoma olivacea. 



Crioceris olivacea, Fabr. Syst. Eleuth. i. p. 45 1\ 

 Galeruca olivacea, Oliv. Entom. vi. p. 651, t. 4. f. 64 2 . 



Hab. Mexico, Acapulco (Hoge); Guatemala, Teleinan, Chacoj, Pantaleon (Champion)] 

 Nicaragua, Chontales (Janson) ; Panama, Bugaba, Volcan de Chiriqui, David, Caldera 

 (Champion). — Guiana 2 ; Brazil, Bahia 1 ; Peru (coll. Jacoby). 



Apparently a common species in Tropical America, and contained in most collections. 

 Olivier's figure gives a correct idea of tbe elytral pattern; varieties have not come 

 under my observation. From Mexico we have only received a single specimen. 



2. Malacosoma encaustica. 



Galeruca encaustica, Germ. Ins. Spec. Nov. p. 598 (1824) \ 



Hab. Mexico, Cordova, Vera Cruz (Salle), Oaxaca, Jalapa (Hbge) ; Guatemala, 

 Senahu, Panzos, Sabo, Purula, San Geronimo, Capetillo, Cerro Zunil, Las Mercedes 

 (Champion); Nicaragua, Chontales (Janson); Costa Rica (Van Patten); Panama, 

 Bugaba, Volcan de Chiriqui (Champion). — Brazil, Bahia 1 ; Amazons (coll. Jacoby). 



Germar's description of this rather common species is sufficient for its recognition ; 

 normally-coloured individuals are testaceous, with two longitudinal ferruginous stripes 

 on each elytron, these stripes being joined before the apex; in many examples the 

 stripes are obsolete or entirely indistinct. Mexican specimens are often of an entirely 

 dark fulvous colour, owing probably to discoloration after death. The species varies 

 in size from 3-5^ lines. 



3. Malacosoma lsevicollis. 



Testaceous ; second and third joints of the antennae short ; thorax impunctate ; elytra closely punctured, each 



with two ferruginous longitudinal stripes. 

 Length 4| lines. 



Hah. Nicaragua, Granada (SalU) ; Costa Rica, Volcan de Irazu, Rio Sucio (Rogers). 



At first sight M. Icevicollis seems to agree perfectly with M. encaustica, agreeing as 

 it does entirely in the general colour and the pattern of the elytra ; the structure of 

 the antennae, however, at once shows its specific distinction, the second and third joints 

 being short and equal, which is not the case in the allied species, these latter 

 having the third joint double the length of the second. The thorax in M. Icevicollis is 

 much less transverse and entirely impunctate ; the elytra at the base are twice as wide 

 as the thorax. Seven specimens, all agreeing in the above particulars. 



4. Malacosoma obsoleta. 



Crioceris obsoleta, Fabr. Syst. Eleuth. i. p. 450 \ 

 Hab. Mexico, Cordova, Toxpam (Salle) ; Guatemala, Las Mercedes, San Isidro, 



