NOHTH AMERICAN PHALANGIIDyE. 269 



IMIAI^ANGIUM Liuiie, 1758. 



Simons' characterization of this genus is substantially as follows: 

 Teguments soft or subcoriaceous ; strioe of the cephalothorax, and 

 of the three last abdominal segments very distinct, those of the five 

 cephalic segments only slightly so. Cephalic border of the cephalo- 

 thorax smooth ; lateral border n)ore or less toothed ; dorsum nearly 

 always furnished with small teeth. Dorsum of abdomen having 

 transverse series of small teeth or hairs. Eye eminence of niedium 

 size, canaliculate, provitled with two series of pointed tubercles, 

 always separated from the cephalic border by a space larger than its 

 diameter. Lateral pores large, elongate-oval, submarginal, visible 

 from above. ' Aiuil piece quite small, wider than long, of the same 

 width, or scai'cely narrower than the curved borders of the eighth 

 segment. Mandibles short and simple in the female, often more de- 

 veloped and provided with tubercles in the male ; first article un- 

 armed below. Palpi simple, often having the inner distal angle of 

 the femur and of the patella very slightly produced, but never pro- 

 longed into a process; hairs equal, or sometimes thicker on the inner 

 side, but not forming a brush ; patella always shorter than tibia ; 

 maxillary lobe provided at the base with two conical tubercles. 

 Maxillary lobe of the second pair of legs much longer than wide, 

 gradually narrowing from the base to the extremity, directed ob- 

 liquely forward and not meeting, anterior border straight. Pectus 

 large, parallel between the coxae, rounded in front or slightly lanceo- 

 late, more rarely enlarged and obtusely truncate. Feet long, more 

 or less robust, tibiae without false articulations : claw of palpus simple. 



Although two Ameri(;an species of Pludang'mm have been de- 

 scribed, but one has been collected in New Hampshire. 



PlialaiiKiiiin riiiortMiiii Wood. Plate XVI. 



Phdlangium cinerenm \\'i.Mi\,Comm. Essex lust. vol. vi. p. -i.") : Weed, Ainer. 

 Nat. vol. xx%-i. p. 32. 

 J/rtZe.~Body 5 — 6.8 mm. long; 3—4 mm. wide; jiaipi 4 mm. long. Legs: first, 

 23—33 mm.; second, 44—52 mm.; third, 24—33 mm. ; fourth, 31—36 mm. Dor- 

 sum, ash-gray, sometimes more or less brownish, with a wide, vase-sliajied central 

 marking, which is sometimes obsolete. There is a transverse series of small 

 s|)inose tubercles behind the eye eminence, another row on posterior border of 

 cephalothora.x, and one row on each abdominal segment exceiit the last two; a 

 curved series of similar tubercles is found in front of the eye eminence. These 

 tubercles have whitish bases and acute black apices, and generally also have a 

 spinose hair arising on one side near the ape.K of the white portion and reaching 

 beyond the tip of the tubercle. In front of eye eminence there are two longi- 

 tudinal series of three each of these tubercles. Liileriil borders of cephalothorax 



TK.A.NS. AM. ENT. SOC. XIX. NOVKMBKR, 1892. 



