EUPLOEINAE: THE GENUS ANOSIA. 707 



with four or five short, not very sh'iuler, recumbent spines, anrl at the tip, on 

 either side of tlie under surface, with a pair of long and ratlier slender, parallel, 

 recumbent spurs; middle tibiae also furnished, just before the middle of the under 

 surface, with a median carina of raised scales. First and fiftli joints of the tarsi 

 equal and largest, either of them as long as the others conil)ined, whicli are also 

 equal among themselves; the distal half of the basal joint and the three succeeding 

 joints furnished beneath with a quadruple row of short, straiglit, undiverging spines, 

 the apical ones much longer, rather stout, appressed, and delicately striate; apical 

 joint similarly furnished, but all the spines are large and increase in size from either 

 end toward the middle. Claws very long, compressed, scarcely divergent, boAved at 

 base, straight beyond and curved a little downward at tip. 



Sides of the eighth abdominal segment enormously developed in the male (33 : 24 ; 

 61 : 5!)), extending backward in the form of clasps, forming a slightly tumid plate, pre- 

 senting its broader surface to the side, extending so far as to conceal all the genitalia, 

 about as long as the segment itself, square, but with the posterior edge rather deeply 

 excised, so as to leave the upper anil lower angles projecting and bluntly pointed, the 

 latter slightly incurved. Upper organ of the male appendages consisting of a pair of 

 small, closely appi'oximated, lateral plates, compressed together, united above, open- 

 ing as by a split posteriorly; they are less corneous than the other parts and each con- 

 sists of a small, quadrate plate with an extension directed backward and downward, 

 half as broad and nearly as long as the centrum. Clasps consisting, on either side, of 

 a rather small plate, rounded oft' posteriorly, but with the upper angle produced to a 

 short, blunt tooth; below the middle, on the inner side, is a stout, horizontal ridge, 

 inci'easing in height from base to apex of clasp, and then bearing, at its inner extrem- 

 ity, a long, moderately stout, slightly curving, very corneous finger. 



A peculiarity in the composition of these parts in Anosia consists in the presence 

 of a cylindrical sheath, directed from below upward, backward and a little outward, 

 opening just above and outside of the upper tooth of the veritable clasps, and from 

 which proti'udes a scarcely spreading pencil of long, equal hairs (61 : 59) , which Mr. 

 Burgess, who has studied them from fresh specimens, finds to be attached to an intro- 

 versible membrane, which can be withdrawn or extended, like the finger of a glove, 

 or the osmateria of the caterpillars of Papilioninae. 



Egg. About half as high again as broad, tapering rapidly and rather regularly to 

 a roundly pointed apex, the more than twenty longituiUnal ribs straight, broad, stout 

 and bluntly rounded, nearly all reaching to or almost to the small micropyle rosette. 

 Cross lines frequent, regularly spaced and distinct, forming quadrangular rounded 

 meshes several times broader than high. 



Caterpillar at birth. Head of the shape of the adult, smooth. Body cylindrical, 

 not tapering at either end, the first thoracic segment as large as any. Garnished with 

 simple hairs arising from minute papillae arranged in subdorsal anterior, supralateral 

 anterior, lateral posterior, laterostigmatal median, substigmatal posterior and ventro- 

 stigmatal median rows, the latter two absent from the thoracic segments. On the 

 second and third thoracic segments, moreover, the lateral posterior papillae become 

 sublateral anterior, while on the seventh and eight abdominal segments they become 

 supralateral instead of lateral. On the upper half of the first thoracic segment there 

 are five hairs on either side, three in a slightly elevated laterodorsal corneous blister, 

 and a lateral pair close together at the side. Besides these there is on the second 

 thoracic and eighth abdominal segments anteriorly, just below the supralateral papilla 

 a cylindrical delicately roughened tubercle, bluntly rounded at tip. and higher than 

 broad, the thoracic about half as high again as the abdominal. 



Mature caterpillar. Head (78 : 16) small, pretty well rounded, but broadly, though 

 not greatly, appressed in front and slightly compressed at the sides, the summit of 

 each hemisphere rounded, although but little elevated; broadest and deepest next the 

 ocelli, nari'owing but slightly below the upper third, the surface nearly smooth; tri- 

 angle large, nearly or quite as broad as high, reaching about half way up the head: 

 a few irregularly and sparsely scattered, exceedingly short, fine hairs on the posterior 



