1907] aiRAULT AND ROSENFELD — LEPTIXOTARSA DECEMLINEATA 
51 
lnst:ir III. Ix'ni;th after exelu.sion — 5.45 inni., avi;. 
Length l)cfore eedy.si.s — S.,50 nim., avg. 
Widtii of lieail — 1.(17 inm., avg. 
Tlie .same. Dorsal l)ody more convex, tlie 2nd and drd tliorai’ie .segments 
inelined; widest at tliird atxlominal segment. 
Ileail r<4atively wider, at least five times wider tlian long, anterio-])osteriorlv, 
its greatest transverse diameter jnst eandad of the in.sertion of tlu' antennae; senlp- 
timal into irregular ])olygons by tine lines. Ocelli hlaek, convex. .\nteTinae, ma.x- 
illary ami labial palpi, the .same. Mandibles stronger, more broad and triangular, 
the teeth forming a broad apex, rather than a fourth side; the 2nd tooth by far the 
larg<‘st, the 4th or inesal one truncate. Clypeus with three equal tubercles in an 
ol)li(pie (eeplialo-laterad) transverse lim?, on each side of the me.son, each hearing a 
single seta. Mandibles hlaek along their outer edges. 
I’rothoraeie segment much the largest, the shield peltate, emarginate along 
caudal margin; second segment at times partially concealed. Stigmata of pro- 
thorax round, large hlaek areae, more eaudad. Legs the same; tibia rectangular, 
slightly longer than the femur, and at least one-third narrower; claw and empodium 
orange yellow; coxa large and conical; trochanter suhtriaTigular. 
.\hdomen the same, more eonvexed, ])rehensile, thicker laterad than dorso-ven- 
trad ; .segmentation more di.stinct, surface minutely papillo.se, from naked eye, smooth. 
Body markings the same, more distinct. Cervical shield bordered with ochre- 
ous at ce])halic margin, involving also portions of the lateral margins, anteriorly; 
portions of the legs ochreous. Stigmata in large, oval, glabrous black areae, simu- 
lating coalesced tubercle areae, as in instar 11. Tubercle areae the same, the anterior 
pair on dorsum of 2nd and 3rd thoracic segments subobsolete; the lateral areae on 
abdomen sube(|ual. 
Instar IV. Length after exclusion — 9.00 mm., avg. 
Length before eedysis — 15.00 mm., avg. 
Width of head — 2.50 mm., avg. 
The same. Prothoracic segment con.s])icuous, mu(4i wider than .segments 2 and 
3, and often completely concealing segment 2. Body widest at .segments 3 and 4 of 
abdomen; more elongate, with the ventral surfaees mon* straight or flat, and with the 
outlines from dorsal aspect sinuate. Convexity of dorsal surfaces less apparent. 
Head more cons])icuoiis, more round, nearly one-half narrower than the firet 
thoracic .segment, ovalin actual outline; its greatest transverse diameter pa.sses between 
the caudal and the interim'diate grou[)s of two of the oc(4li; face engraved, sculpture 
of head slightly stronger. ( )celli and anti'imae the same, black. Mandibles fuscous, 
• larker at the teeth, at ba.se nearly as wide as long; teeth stouter and less acute. 
