EXOCHOMUS. 177 



EXOCHOMUS. 



Exochomus, Redtenbacher, Tentam. dispos. gen. et spec. Col. pseudotrim. p. 11 (1844); Mulsant, 

 Spec. Col. Trim, secur. p. 476 (pars) ; Chapuis, Gen. Col. xii. p. 246. 



Exochomus, besides having the abdominal coxal fossettes " complete," has the tibiae 

 not toothed, but they are sometimes dilated angularly. About twelve species belong 

 to it. 



1. Exochomus contristatus. 



Exochomus contristatus, Muls. Spec. Col. Trim, secur. p. 492 * ; Crotch, Rev. Coccin. p. 193 2 (nee 

 Trans. Am. Ent. Soc. iv. p. 377 3 ). 



Hob. Mexico 1 2 3 (Salle), Vera Cruz (Salle), Jalapa (Hoge). 



This is not, as Mr. Crotch originally supposed it might be 3 , a variety of E. childreni, 

 Muls. 



The type from Chevrolat's collection, now in the Cambridge Museum, is the only 

 exponent of it in Crotch's collection ; it is larger and more oval than E. childreni, and 

 has the body beneath red. 



2. Exochomus marginipennis. (Tab. X. figg. 5, 6.) 



Coccinella marginipennis, Lee. Ann. Lye. N. York, i. p. 173, t. 11. fig. 15 \ 



Exochomus marginipennis, Muls. Spec. Col. Trim, secur. p. 485 2 ; Crotch, Trans. Am. Ent. Soc. iv. 



p. 377 3 , and Rev. Coccin. p. 193 4 . 

 Exochomus prcetextatus, Melsh. Proc. Ac. Phil. iii. p. 180 5 . 

 Brumus septentrionis, Weise (sec Horn, Trans. Am. Ent. Soc. xiii., Proc. Ent. Sect. p. xiv). 



Hah. North America 45 , United States 2 , Colorado, New England, and Western 

 States 3 , Georgia 1 . — Mexico, Guajuco in Nuevo Leon (Dr. Palmer), Ventanas in 

 Durango 2000 feet (Forrer), Cuernavaca in Morelos, Iguala in Guerrero, Cerro de 

 Plumas, Tapachula in Chiapas (Hoge). 



We figure a specimen from Iguala (fig. 5) and one of a variety (fig. 6) from Cerro de 

 Plumas. 



3. Exochomus championi. (Tab. X. fig. 7.) 



Transversim orbicularis, valde convexus, sanguineo-rufus, subtus corallinus ; prothorace nigro, lateribus late 

 et capite albis, elytris sanguineo-coccineis, macula scutellari et apice late nigris, scutello nigro. Long. 

 4|-5 millim. 



Hah. Panama, Volcan de Chiriqui 2500 to 4000 feet (Champion). 



Head whitish yellow, narrowly black at the base ; clypeus scarcely produced round 

 the eye, and the basal joint of the antennae visible from above; antennae and palpi 

 yellow. Prothorax black, the edge in front sometimes very narrowly whitish, but often 

 the black colour extends to the margin, the sides widely whitish yellow ; the surface 



biol. centr.-amer., Coleopt., Vol. VII., January 1894. 2 A* 



