1921] NATURAL SCIENCES OF PHILADELPHIA. 209 



Measurements {in millimeters). 



Length of Length of Width of Depth of Length of Width of 

 body pronotum pronotum pronotal tegmen tegmen 



cf fissure 



This very remarkable insect was previously known from the 

 type and a single specimen, sent Guerin by Poey from Havana, Cuba. 

 The latter specimen, with certain others recorded by Guerin, ^^ al- 

 most certainly came from South America and was included in the 

 Cuban list in error. 



Three immature individuals are before us from the same local- 

 ity and one from Cayenne, taken in April, 1906, which we believe 

 represent this species. The largest, apparently in the last stage 

 preceding maturity, like the others., shows no trace of lateral pro- 

 notal fissation and is in shape strongly flattened patelliform. 



Zetobora emarginata Burmeister. Plate XII, figiires ll_and 12. 



1838. Z[etobora] emarginata Burmeister, Handb. Ent., II, Abth. II, Pt. I, 



p. 511, No. 5. [Para, Brazil.] 

 1838. Z[etobora] cicalricosa Burmeister, ibid., p. 511, No. 6. [Para, Brazil.] 



La Forestiere, upper Maroni River, French Guiana, 1 cf , 1 9 . 



St. Jean du Maroni, French Guiana, Icf, 19. 



Association of the sexes and comparison with a topotyjie in the 

 Academy Collection and with the original description, furnish 

 convincing evidence that Burmeister 's emarginata represents the 

 male and his cicalricosa the female of the same species. In this 

 insect the female is slightly larger, with broader pronotum and teg- 

 mina than the male, the lateral angles of the pronotum subemar- 

 ginate caudad, not minutely but distinctly emarginate as in the 

 opposite sex. 



Walker's perspicua is an unquestioned synonym, as indicated by 

 Kirby. That author is, however, incorrect in placing limbata of 

 Brunner under emarginata and it is by no means clear that he is 

 justified in placing rudis of Walker in the same synonymy. 



^® In Ramon de la Sagra, Hist. Cuba, Ins., (1857). 



