PHYSONOTA. 169 
P. attenuata. The prothorax is described as having numerous irregularly confluent 
black markings; but these may be partly due to discoloration. 
9. Physonota picticollis. (Tab. VIII. fig. 17, 2.) 
Physonota picticollis, Boh. Monogr. Cassid. ii. p. 193’, and iv. p. 245°; Cat. Col. Ins. Brit. Mus. 
ix. p. 98°. 
Physonota impromta, Boh. Monogr. Cassid. iv. p. 244°. 
Hab. Muxico!~4 (Mus. Brit.), Ventanas in Durango (Forrer, Hoge), Cerro de Plumas 
(Hége), Juquila (Sailé) ; Guatemata (Mus. Brit.), Coban (Conradt), Capetillo, Duefias 
(Champion). 
With the types of these two insects before me, I am quite unable to separate them 
as distinct species; P. impromta merely differs from P. picticollis in having an in- 
distinct spot on either side of the median lobe of the prothorax at the base (often 
obsolete), and the elytra a little more closely punctured. Boheman appears only to 
have seen female specimens ; the male has the elytra broader (at the base considerably 
wider than the prothorax) and shorter, with the humeri broadly rounded. We have 
received numerous examples of both sexes from Ventanas, in Western Mexico. 
10. Physonota ovalis. (Tab. VIII. fig. 18, var.) 
Physonota ovalis, Boh. Monogr. Cassid. ii. p. 195', and iv. p. 246°; Cat. Col. Ins. Brit. Mus. 
ix. p. 98°. 
Cassida brevilinea, Sturm, in litt. * 
Hab. Mexico !~4 (Sallé, ex coll. Sturm), Monterey in Nuevo Leon, Chihuahua city, 
Jalapa (Hége), Totosinapan (Sai/é). 
The specimens from Northern Mexico, and also the one from Jalapa, belong to the 
var. b of Boheman 1, which has two small spots on the prothorax on either side of the 
disc midway between the short median streak and the outer margin. The specimen 
from Totosinapan belongs to the var. a, which has only one spot on either side of the 
disc; and the example from Sturm’s collection agrees with the type, which has a short 
median streak only on the prothorax. The specimen figured represents one of Bohe- 
man’s types of the var. a. 
11. Physonota vitticollis, (Tab. VIII. fig. 19, var.) 
Physonota vitticollis, Boh. Monogr. Cassid. ii. p. 1947, and iv. p. 245°; Cat. Col. Ins. Brit. Mus. 
ix. p. 98°. 
Hab. Mexico!—%, Juquila (Sallé). 
Of this species I have only seen two specimens of the var. a described by Boheman ? ; 
one of these is shown on our Plate. The elytra have irregular rows of rather coarse 
blackish punctures on the disc, the margins coarsely, irregularly punctate. 
