224 



feeding in the flowers of various plants, as its larva lives in the 

 cactus flesh. Collops tricolor, Acmwodera tubulus,&Tid Strigoder- 

 ma arboricola were noted within the flowers. 



Onagra biennis. — In addition to the larva of the web tube 

 previously mentioned, this was fed upon by Atlelabus bipustu- 

 latus, Haltica fuscocenea, Tyloderma foveolatum, and Chalcoder- 

 mus collar is, and often harbored a number of adult Metachroma 

 parallelum. 



Monarda punctata. — This abundant plant of the sand re- 

 gions about Havana was seen at different times to have its 

 stems dotted with Corimelcena ciliata and Sehirus cinctus. The 

 ( 'orimelcena, usually considered quite a rare species, was also 

 extremely abundant in nearly bare sand about the bases of lit- 

 tle grass tufts, every turn of the finger in the sand bringing 

 several to the surface. Honey-bees were common upon the 

 flowers of the Monarda. 



Commelina virginica.—The leaves of this plant were white- 

 streaked by the feeding of adults of Lent a corn at a. the larva of 

 which bores in the stems. 



Rhus aromatica. — This dense, bushy sumac (PI. XIX.) sup- 

 ported Blepharida rhois and its sticky larvse, Perillus circum- 

 cinctus, and Restheni< t insitiva. Catorhintha mendiea and Zelus 

 socius also occurred on it. 



Euphorbia corollata. — Chariesterus antennator was once 

 noted very common on flowers of this species. 



Cassia chamcecrista. — This common flowering plant of the 

 waste sand land was well populated. Bombus, Apis, Plesia 

 {Myzine), Pqlistes, etc., were busy on its flowers, and Phormia 

 terraaorit' was numerous about it. Bruchus cruentatus was swept 

 from it in numbers, probably breeding in the seeds. 



Cracca virginiana. — A group of these plants was infested 

 with Macrobasis unicolor. 



Callirhoe triangulata. — This formed a sprangling tuft of 

 stems and long-petioled radical leaves, and at their extreme 

 bases, within the tuft, were often large enveloping masses of 

 "'frog-spittle", containing bulky blackish larval Cercopidce, prob- 



