38 THE FLORIDA ENTOMOLOGIST 
By our later systematists the family Chrysomelidae is sep- 
arated into 15 groups or subfamilies, 12 of which are represented 
in Florida. Each of these is mentioned under the brief charac- 
terization of its first genus in the list which follows. 
LIST OF SPECIES AND VARIETIES 
I. Donacia Fabricius. 
Elongate or oblong graceful beetles of medium size (6-12 mm.), 
occurring upon the foliage and flowers of water-lilies, pickerel- 
weed, skunk cabbage, arrow-head and other semi-aquatic plants; 
the larvae living under water and feeding upon the roots, the 
adults flying actively about and mating usually within the flow- 
ers. They have the head constricted to form a neck behind the 
eyes, thorax narrower than elytra and without side margins; 
mandibles simple; first ventral about as long as the others united. 
(Subfamily Donacinae.) 
1. (15197). D. floridae Leng, 1891, 196.—Types in the U. S. N. Mus. 
from Enterprise. No other Florida record. Food plant white water-lily, 
Castalia odorata (Dryand). The males differ from those of all others in 
having the hind femora much surpassing the tips of elytra. 
2. (15198a). D. cincticornis Newn.—Crescent City (Sz. Ms.). “Jupiter 
and Lake Worth; not a var. of proxima but a distinct species” (Schf. Ms.).— 
White water-lily; yellow water-lily, Nymphaea advena Sol.; pondweed, Po- 
tamogeton. 
3. (15200). D. hypoleuca Lac.—Enterprise, Lake Poinsett, Crescent City 
(Sz. Ms.). Lake City (Wat.). Schaeffer (Ms.) says that the Crescent City 
specimens in the U. S. N. Mus. are texana. 
Ah (ee a! ). D. texana Crotch.—Crescent City; a distinct species, not 
the female of hypoleuca as stated by Leng.” (Schf. Ms.).—Yellow water- 
lily. 
*5. (15202). D. piscatrix Lac.—Throughout the State. Common about 
Dunedin, Mch.-Apr., mating in flowers of its only food plant, the yellow 
water-lily. 
6. (15206). D. rugosa Lec., 1878, 415.—Described from Enterprise. Cres- 
cent City (Sz. Ms.).—Pickerel-weed, Pontederia cordata L. 
7. (15212). D. torosa Lec.—‘Specimens in Leng Collection labelled 
‘Fla.’; occurs in Massachusetts on Carex and grasses in moist meadows” 
(Schf. Ms.). 
8. (15215). D. metallica Ahr.—‘Specimens in Leng Collection labelled 
‘Fla. ” (Schf. Ms.). In Indiana this species has been taken only between 
