18 



whether Blasquez, misled by the name, considered that he really had 

 the species Bosduval refers to as Terias agave (Sp. Gen. I, 656= 

 Eurema deva Doubl.) before him and that Boisduval's description 

 was erroneous, or whether he intended agavis to be a name for a new 

 species. We fancy, however, Teria agavis is merly a misspelling of 

 Terias agave and that Blasquez, who appears to have had little sys- 

 tematic knowledge of Lepidoptera, has totally misplaced an insect 

 which, to judge by the figure, can be none other than hesperiaris. 



According to Blasquez the ova are deposited in October and 

 November on the leaves of the Maguey or Agave and remain in this 

 state until February or March when the young larvae emerge, bur- 

 rowing into the stalks and forming cylindrical burrows about "4 deci- 

 meters in length and one or two centimeters in diameter." Pupation 

 takes place from June to August in the upper part of the burrow in a 

 silken cocoon ; the imago appears during August and September. The 

 full grown larva is 7 centimeters long and 5 mm. in diameter, in color 

 dirty white, transparent, head and legs brown. Under the name of 

 "meocuillin" it is regarded by the natives as a great delicacy and large 

 numbers are collected to serve as food. 



We have before us i 3 and 2 9 9, and apart from some very 

 slight variation in the shape of the submarginal orange band of pri- 

 maries all three specimens are remarkably alike ; there is evidently no 

 sexual dimorphism as is more or less shown in the other members of 

 the family (as far as both sexes are known), a fact that strengthens 

 us in our belief that in hesperiaris we are dealing with a more primi- 

 tive form ; we have also found no secondary sexual characters. 



The Claw Segment (PI. Ill, Fig. 8) is spined, with fine lateral 

 hairs; the pulvillus well developed as a semicircular pad, finely spicu- 

 late ; the paronychium is bilobed, both lobes being narrow and ribbon- 

 like. 



Genitalia. $ . The Uncus is much as in M. poliiigi. broad at the 

 base, the division between it and the Tegumen marked by a slight 

 incision ; narrowing distally to about >< the basal width it forms a 

 spatulate process, curved somewhat downward, the distal margin 

 very truncate and slightly excavated in the centre. The Gnath is 

 drawn out distally to almost a point, extending nearly to the apex of 

 uncus, membranous, more strongly chitinized at base. 



The basal portion of the Clasp (PI. V, Fig. i) is of even width 

 throughout ; the Blade is considerably longer than the Lobe, bent up- 



