52 EEOTYLnm 



lunulate, with the convex side reaching the base ; the fascia is complete, the portion 

 beyond the fifth stria being much narrower than the central part ; the interstices of the 

 striae are finely punctulate. A single specimen. 



13. Mycotretus pallidior. (Tab. II. fig. 18.) 



Ischyrus pallidior, Crotch, Cist. Exit. i. p. 428 \ 

 Mycotretus nigrotinctus, Crotch, loc. cit. p. 454 2 . 



Hob. Mexico \ Cordova (Hoge), Toxpam, Playa Vicente, Teapa 2 {Salle) ; Guatemala, 

 San Isidro, Zapote, Sinanja (Champion) ; Nicakagua, Chontales (Janson). 



This is so evidently a Mycotretus that I am surprised that Crotch should have 

 described it as an Ischyrus. It is, however, the same species as he has subsequently 

 described as Mycotretus nigrotinctus. There is a specimen from Teapa in Salle's 

 collection, but it is labelled M. bisellatus, Chevr. ; I have not found any published 

 allusion to this MS. name, and it is, indeed, applied to a wholly different insect in the 

 same collection. There is a variety in which the thorax wants the four transverse 

 spots, and has only two dots to represent the mark on the front margin, but I have 

 only seen one specimen from Toxpam so marked. The scutellum is usually black; it 

 is, however, sometimes yellow in the middle. 



Many specimens have been received of this insect. 



. 14. Mycotretus bistrigatus. 



Mycotretus bistrigatus, Lac. Monogr. Erotyl. p. 188 \ 

 Hdb. Mexico x (Edge), Toxpam (Salle). 



Var. Elytris nigris, basi apiceque rufis. (Tab. III. fig. 11.) 



Hah. Mexico, Parada (SalU). 



Varies from the type form, which has rufous elytra with a narrow black line, to 

 one in which the black line has almost disappeared (I have not seen a variety with 

 wholly yellow elytra) ; and, on the other hand, there is a variety with black elytra, 

 with rufous marks at the base and apex. M. bistrigatus may, however, always be 

 known by the black margins of the thorax, broad in front and at the base, and narrow 

 on the sides, and by the colour of the legs. 



A specimen of the variety from Parada is shown in the figure. 



15. Mycotretus nitescens. 



Mycotretus nitescens, Crotch, Cist. Ent. i. p. 445 1 . 



" M. opalescenti affinis, sed totus rafo-sanguineus, antennis clava infuscata. L. 2 lin." 



Hab. Mexico, Toxpam (Salle) ; Guatemala, Las Mercedes, Pantaleon (Champion); 

 Panama, Bugaba, Volcan de Chiriqui (Champion). — Amazons, Ega l . 



