IIESI'EIUDI THE (JENUS IIESPEUIA. ir)27 



Parasites. Jfiss Arurtfoklt and Messrs. Riley and Elliot have nil 

 ol)taiiud tlio same parasite from the caterpillar, Apanteles j)liolisorae. Wise 

 Murtfeldt has also reared Microdus sanctus (88 : 10) and Mr. Riley Liin- 

 neria fiij^itiva, so that the creature seems to have its fair share of enemies, 

 more indeed, than are known for any other of our Ilesporidae. 



Desiderata. Tiiis is one of our best known Ilesperidae, hut its annua! 

 history needs verification and amplification at every point ; the incoming and 

 outjxoing of each hrood, the points where diijoneutism becomes trigoneu- 

 tism, the habits, fiight and postures of the butterfly, the range of food 

 plant of the caterpillar, and the northern line of distribution have still to be 

 carefully wtu'ked t)ut. 



LIHT OF ILLUSTIiATIONS.—PHOLISOJiA CATULLUS. 



General. Chrysalis. 



PI. 29. fig. 1. Distribution in Xortb Anierica. PI. 85, fig. 29, 36, 41. ClirysaliJs. 

 86:10. Slicroilus sanctus, a parasite. Imago. 



Eijg. I'l. 9, fig. 2. Male, both surfaces. 

 PI. 66, tig. 21. Egg. 35: 41-43. Male aljdoniinal appendages. 



69:2. Micropyle. 41:8. Neuratiou. 



Caterpillar. 48:1. Scales of the male imago. 



PI. 77, figs. IG, 23. Mature caterpillars. 58:3. Side view, with head and appen- 



21. Caterpillar, fourth .stage. dages enlarged, and details of the structure 



80:43-44. Front views of head, stages i, v. of the legs. 



HESPERIA FABRICIU§. 



Hesperia Fabr., Ent. syst., iii, i: 258 (1793) ;— Syrichtus Boisd., Icones Lep., 230 (1832-33). 



Scudd., Proc. Amer. acad. arts sc, x: 187- Scelothrix Ranib., Cat. L(5p. Andal., i: 63 



1S9 (1875). (1858). 



Pyrgus Hubn., Verz. bek. schniett., 109 (1816). Type.—Papilio malvae Linn. 



Blunien halbverstohlen blickten 

 Neckend aus dem Gra.s heraus, 

 Bunte Schnietterlinge schickten 

 8ie sogleieh auf Kundschaft aus. 



EiCHENDORFF.— ^!(/"mei?ies Kindes Tod. 



Imago (58 : 4). Head very large, especially broad, clothed vi\t\\ pretty long and 

 very short hairs, the former mostly arranged in transverse lines ; at the exterior base 

 of the antennae, an appressed, strongly curving tuft of long, uneqnal hairs, directed 

 outward and a little forward, reaching fully half way over the circumference of the 

 eye. Front only a little full with a scarcely perceptible, bhint, transverse ridge at 

 the middle and here only a little, elsewhere scarcely, surpassing the front of the eyes ; 

 separated from the vertex by a scarcely perceptible, straight line, uniting the bases of 

 the antennae slightly in advance of their middle; front border nearly straight, slightly 

 emarginate, the front latenil angles rounded off but not so much as usual, leaving the 

 sides themseves nearly straight and strikingtlieouter limit of the base of the antennae; 

 about two and a half times broader than long, slightly hollowed in the middle above 

 by a depression common to it and the vertex ; the latter fully h.alf as long again as the 

 front, separated from the occiput by a nearly straight, scarcely perceptible line, behind 

 the middle with a scarcely elevated transverse ridge formed of two similar arcs open- 

 ing backward, the whole vertex slightly tumid throughout, but scarcely. If at all, ele- 

 vated beyond the level of the eyes, locally very slightly tumid behind the interior base 

 of the antennae. Eyes large, pretty full, nearly circular, naked, the unfaceted belt as 



