40 EEOTTLID^E. 



At first sight very similar to I. quadripunctatus ; and Crotch remarks, referring to 

 the Nicaraguan specimens, " these as well as the Mexican exponents of this species 

 appear to be a southern form of /. quadripunctatus with the head more or less rufous." 

 It has, however, in addition to the colour of the head, the prostemum compressed in 

 front, projecting in a point, and hence is placed by Lacordaire in a separate section of 

 the genus. It appears to me to be scarcely distinct from I. subcylindricus, according 

 to the exponents of that species in the Cambridge collection, and others in my own. 



5. Ischyrus vespertilio. 



Ischyrns vespertilio, Lac. Monogr. Erotyl. p. 112 1 . 



Hah. Mexico, Tabasco l . — South Ameeica, Colombia 1 . 



I have not seen this species. 



6. Ischyrus elegantulus. 



Ischyrus elegantulus, Lac. Monogr. Erotyl. p. 121 * ; Crotch, Cist. Ent. i. pp. 144, 426 a . 

 Hah. Nicaragua, Chontales (Janson 2 ). — South America, Colombia 1 2 . 



Not seen by me from Nicaragua; the specimens in the Cambridge collection are 

 from Colombia. 



7. Ischyrus bogotse. 



Ischyrus bogotce, Crotch, Cist. Ent. i. p. 430 \ 

 Hal. Guatemala, Zapote {Champion). — Colombia, Bogota 1 . 



8. Ischyrus proximus. (Tab. II. figg. 21, 22.) 



Ischyrus proximus, Lac. Monogr. Erotyl. p. 113 \ 



Hah. Mexico \ Toxpam, Santecomapan (Salle) ; Guatemala, Zapote (Champion) ; 

 Nicaragua, Chontales (Belt) ; Costa Rica, Cache, Irazu (Rogers). 



In this apparently common species the thorax has six spots, the two discal ones alone 

 being detached, the others placed two on the front margin and two on the base, together 

 forming a circle. The head is red in the central part and in front, excepting in 

 the Mexican specimens and in one from Chontales, where it is black. Our figure 21 

 is taken from a specimen from Santecomapan ; fig. 22 is from an example from Irazu. 



9. Ischyrus femoralis. 



Dacne femoralis, Chevr. in Guerin's Icon. Regne Anim., Ins. p. 63, t. 18. f. 10 \ 

 Ischyrus femoralis, Lac. Monogr. Erotyl. p. 114 2 ; Crotch, Cist. Ent. i. p. 430 3 . 

 Eab. Mexico x 2 3 . 



This, as Crotch remarks, is probably only a colour-variety of I. proximus, 



