EUDIAGOGUS.—PROMECOPS. dll 
EUDIAGOGUS. 
Eudiagogus, Schénherr, Gen. Cure. vi. 1, p. 8307 (1840) ; Lacordaire, Gen. Col. vi. p. 389; Horn, 
Proc. Am. Phil. Soc. xv. p. 110. 
The three known species of this genus are very closely related, mainly differing in 
the markings of the upper surface. E. rosenschoeldi, Fahr., from Louisiana, ‘l’exas, 
&c., probably extends into Northern Mexico; it may be known by its nigro-vittate 
prothorax and the irregularly extended cupreous or whitish elytral vitte. 
1. Hudiagogus pulcher. (Tab. XIV. fig. 20.) 
Eudiagogus pulcher, Fahy. in Schénh. Gen. Cure. vi. 1, p. 310'; Horn, Proc. Am. Phil. Soc. xv. 
‘p. 1117; Pierce, Proc. U.S. Nat. Mus. xxxvii. p. 864 (1909)°; Mitchell and Pierce, Proc. 
Ent. Soc. Wash. xiii. p. 50 (1911) *. 
Hab. Norra America, Florida and Texas ?34.—Mexico! (Mus. Brit.; Sallé), Jalapa 
(Hoge). 
Sent in numbers by Hoge from Jalapa. This species seems only to differ from the 
Brazilian E. episcopalis in having the submarginal cupreous stripe on the elytra more 
sinuous and often connected before the middle with the stripe along the lower margin. 
Both species have the prothorax dilated anteriorly and marked with four large black 
spots. Found on senna (Cassia occidentalis) in Texas *. 
PROMECOPS. 
Promecops, Schénherr, Cure. Disp. Meth. p. 135 (1826) ; Gen. Cure. il. p. 164, vi. 1, p. 315: 
Lacordaire, Gen. Col. vi. pp. 385, 389. 
A genus including a large number of closely allied Tropical American forms, several 
of which are so imperfectly characterized that they are not recognizable from the 
descriptions alone. Lacordaire has called attention to the fact that the species are 
divisible into two groups, one with connate and the other with free tarsal claws ; he 
restricts Promecops (in his table of the genera of Promécopides) for the former. 
Some of the members, again, of the second group have the mesosternum conically 
protuberant as in Coleocerus (P. lepida, leucothyrea, rhombica, rhombifera, unidentata, 
&ce.); others (P. viator, umbrata, and several of the new forms here added) have the 
mesosternum flattened or simply convex. It is preferable to leave them all under one 
genus, Promecops, for the present, the species being often so much alike that they are 
only separable by the structure of the claws or mesosternum. In some of the new 
forms now added remarkable characters are to be found in the anterior tarsi or anterior 
tibie of the males. The various species, many of which are very variable in size and 
colour *, may be tabulated thus :— 
* The extent of variation is well shown in a series of about 450 examples of P. lunata, Fahr., obtained by 
Mr. H. H. Smith in the Windward Is. (St. Vincent, Grenada, Becquia, and Cannouan). This species has 
small, connate tarsal claws and a simply convex mesosternum. 
