REPORT OF THE ENTOMOLOGIST. 513 



row of short spines or warts: labium (Plate VI, Fig. 3 c) horny, with two brushes of 

 liau- above, between which is a very small ligula covered with a small brush of hairs; 

 fans (Plate VII, Fig. 1) composed of a stout stem, bearing about forty-six scythe- 

 shaped rays, hned on the inside by very minute, equidistant, erect haks of equnl 

 length. Tfioracic proleg (Plate VI^ Fig. 4) faintly four-jointed, subconical, retractile 

 (introversible), very thin and transparent, crowned with about twenty rows of short, 

 sharp liooks, apparently arranged A a circular manner; the iiooks, of which ten are 

 in each row, seem to be movable to a certain extent, and are fastened or hinged to 

 ^mall chitinous rods in the epidermis. Tip of abdomen (Plate VI, Fig. 7) formed by 

 a bubcylindrical body, crowned -with rows of liooks. Breathing organs below theae 

 hooks and on the upper side of abdomen; they consist of tlnree short, cyhndrical, 

 soft and retractile tentacles, wliich connect with the large internal tracheae (Plate 

 Vi, Fig. 7). 



In f ull-gTown larvae a spot more or less dark (as in our figure) is seen on each side 

 of thoracic joint; it is produced by the formation of the coiled breathing tubes of 

 the future pupa. 



Pupa. — Average length, 5™™. General color, when fresh, honey yellow; protho- 

 racic filaments brown, and the abdomen dor sally also tinged with brown, except a 

 mediodorsal space; all the members have also a fine brown marginal line. Pro- 

 thoracic filaments consisting of six main rays issuing from the basal promine!ice 

 and subdivided two or three times, so that in most cases as many as forty-eight ter- 

 minal filaments can be counted. Abdominal joints 3, 4, and 5, each with eiglit well- 

 eeparated dark-brown and anteriorly-recurvecl hooks (Plate VI, Fig. 8), the four on 

 each side separated by a mediodorsal space; those on joint 3 less conspicuous than 

 those on joints 4 and 5; joint 6 without armature; joints 7, 8, 9, and also subjoint 

 less distinctly armed near anterior margin with a continuous dorsal row of very 

 minute posteriorly recurved points; ventrally joints 6, 7, and 8 have each four very 

 minute anteriorly recurved hooks. 



Cocoon. — Average length, S-Sf"™. Not completely made and not entirely covering 

 the pupa, but tightly surrounding its larger portion. Shape very irregular, with no 

 distinct rim at the upper edge, which is more or less ragged. The threads compos- 

 ing it are very coarse, and tlie meshes rather open and ordinarily filled with luud. 

 Not always fastened separately to objects, but frequently crowded together, without 

 forming, however, such coral-like aggregations as in some of the Northern species. 



SiMULTUM MERIDIONALE, n. sp.— 9 • Length, S.S™'" to S'^'". (Plate VIII, Fig. 6.) 

 Head uniform slate-blue, verging to greenish or cerulean blue in some lights, clothed 

 with silvery pubescence, wliich becomes longer behind the eyes; parts below an- 

 tennse and tropin more densely pubescent, producing the effect of a white face; eyes 

 with a metallic, coppery luster: antenna3 black, with very dense white pubescence; 

 no bristles on basal two joints, which are but very slightly tinged with red; joint 1 

 shortest; joints 2, 3, ancl 11 subequal in length; joint 3 widest; joints 4 to 9 sub- 

 equal in length; joint 10 but slightly shorter than joint 11, which is fusiform; jomts 

 8 to 11 gradually decreasing in width; maxiUary palpi as long as antennae, blackish, 

 with long whitish bristles. Thorax slate-blue, with less dense silvery-white pubes- 

 cence; markings quite distinct, producing the effect of a sculpture, and consisting 

 of three black longitudinal lines, the median narrow, widening a little at apex, and 

 the outer ones curving inwards at base and outwards near apex, sometimes reach- 

 ing to base of patagium, which appears whitish on account of dense pubescence; 

 on the lateral edges of prothorax are fine black sutures; under side uniform slate- 

 bhie. with sparse i)ubescence ; space around the large stigma almost white: halteres 

 white, very faintly tinged with red. Abdomen nine-jointed, joints subequal in 

 length, except the last two, which decrease; markings entirely different from those 

 of S. pecuarum, formed by velvety black, dark blue and bluish-white, almost sil- 

 very, colors; the dark blue appears upon dorsal surface of the last five segments, 

 spreading from a roundish median spot on 5 to the immaculate blue of the last two 

 segments; segments 2, 3, and 4 have each a black cross-bar, and 5, 6, and 7 two nar- 

 row black submedian stripes, which disappear almost entirely upon 7; the bluish- 

 wliite forms an outer edge to all the black and extends over the whole lower sur- 

 face of abdomen, Avith the exception of more or less well-mar Jced black cross-lines 

 in middl(i of each segment; a bluish-wliite or silvery pubescence covers the entire 

 abdomen, but is very sparse upon tlie dorsal parts. I^egs brownish-black; tarsi 

 almost black, and more or less densely covered with whitisii hairs. Wings subhya- 

 line, veins bluish-white, base ferruginous. 



Describ(;d from many bred and captured specimens. 



$ .—(Plate Vni, Fig. 4.) Length 1.5'"'" to 3"™. Very different in appearance from 



female. Eyes confluent, very large, brilliant coppery; a very marked dhference in 



the size of the facets, those on upper surface being very large and metallic -coppery, 



those below and surrounding trophi becoming suddenly small, black, with bronze 



33 AG— '86 



