638 



COMPENDIUM OF UENER1C DISTINCTIONS. 



Genus. Ct.otho. — Two upper spinnerets long. Falces small 

 and not toothed. Tongue triangular. North Africa. 



Genus. Argyronreta. — Eyes / . " ■ \. Intermediate 

 of front row smallest. Lip long, \ • • • • / triangular, wide 

 at base, rounded at point. First pair of legs longest. 



Family. CINIFLONIDJE. — Falees jointed vertically. Spin- 

 nerets four pairs, lowest pair shortest. Three claws on tarsi. 



Genus. Ciniflo.— Eyes / . • • . \. Intermediate of both 

 rows sessile, the pairs on v . . "/ sides placed on tubercle. 

 Lip wide in middle. First pair of legs longest, third shortest. 



Germs. Ergatis. — Eyes /, • • m \. Two side pairs on a 

 tubercle. Lip large, tri V* •/angular. First pair of 



legs longest, then second pair, third shortest. 



Family. AGELENID3:.— Falces jointed vertically on an in- 

 clined plane. Spinnerets three pairs. 



Genus. Auelena. — Eyes in two transverse curved rows, with 

 convexity directed backwards. Lip squared or oval. Fourth 

 pair of legs longest. 



Genus. Tegenaria. — Eyes in two transverse rows, front row 

 straight, hinder curved, convexity backwards. Lip squared, 

 notched or hollowed at tip. Legs .slender, cither Hist or fourth 

 pair longest. 



Genus. C.ki.otes. — Eyes 

 tuber 



us. C.KnoTKK.— Eyes / •* . \- Each side pair on a 

 de. Lip curved on \ " .. */ sides, blunt at tip. Legs 

 strong, fourth pair longest. 



Genus. Theridion. — Eyes / . # * # \. Sometimes two side 

 pairs idose together. First \ * # . "/and second pairs of 

 legs longest. 



Genus. Lixyfhia. — Eyes, four middle placed in two rows, 

 hinder pair more remote, two side pairs near each other. First 

 pair of legs longest. 



Genus. Tetragnatha. — Eyes in two nearly parallel straight 

 rows, nearly equal in size. Legs long and slender. 



Family. EPEIRID3;.— .Jaw widened from base, forming 

 rounded flattish plate. 



Genus. Epeira.— Eyes ( \ .* Y Shin soft. 



Genus. Gastkrouantha. -Shin hard and bony, covered with 

 ines, tubercles, and prominences of various shape. Tropical 

 untries. 



Genus. Otiothops.— Hinder pair of eyes united. South 

 America. 



Till,,-. BINOGULINA — Eyes two. 



Genus. Nops. — As tribe. Central America. 



Tribe. SENUV I'LINA.—Uyes six. 



Genus. Dysdera. — Eyes near each other, in two rows: first 

 row with two eyes, second with f ■. Fist pair of legs longest. 



Genus. Segestril-m. — Eyes in two rows; front row with four 

 eyes, hindi v with two. Europe. 



Genus. Scytodes. — Eyes equal, in pairs, forming a triangle. 

 Africa. 



spi 

 count 



Order. PHALANGITA.— Cephalothorax united with abdomen, 

 which is ringed or transversely folded. Palpi thread-like. 

 Family. PHALANGIDJE. Legs long, feet with one claw. 



Genus. Phalangu'.w. — Tarsi with ten or fifteen joints. Sec- 

 ond and last pair of legs longest and nearly equal. 



Order. SOLI FUG/E.— Cephalothorax distinct from abdomen, 

 which is ringed. Palpi as long and large as legs. 



Genus. So i.Phtga. — Mandibles double-clawed, lower finger 



veable. Palpi longer than first pair of feet. All feet but 



first pair with two claws. Eves two, on a tubercle. Hot coun- 

 tries. 



trains. I'uki.ifku. — Eyes two. Cephalothorax divided by 

 transverse furrow. 



Genus. Obisium. — Eyes four. Cephalothorax not divided. 



Order. PEDIPALPI. Palpi foot-like, with pincers at tip. 

 Abdomen divided by segments. Breathing orifices eight or 

 four. 



Family. PHRYNIDJE.— Slight groove between abdomen and 



cephalothorax. Palpi spined. Eyes eight. Two front feet 

 long, without pincers. 



Genus. I'iiuvms. — Palpi long as body, with horny claws at 

 tip. First pair of legs very long and shinier. Body rather flat. 



Family. SCOBPIONID.E.— Abdomen sessile. Palpi with pin- 

 cers, larger than legs. Six last segments of abdomen narrowed, 

 last segment w ith curved sting. Two comb-like appendages on 

 lower part of body, behind fourth ['air of feet. 



Genus. Hi Tin s.— Eyes eight, three lateral on each side of 

 cephalothorax. 



Genus. Scorpio. — Eyes six. Two lateral on each side. 



Order. ACARINA.— Cephalothorax and abdomen united, not 

 divided into segments. 



Family. IXODIDJE. -Body with leathery covering. Beak 

 blunt, toothed at tip, barbed at middle. Last joint of feet two- 

 clawed, with vesicle. 



Genus. Ixodes. — As Family. 



Family. GAMASIDiE. -Palpi free, thread-like. Mandibles 

 xv i tli pincers Eyes none, or indistinct. 



Genus. Leptus. — Palpi tolerably defined, also sucker. Body 

 egg-shaped, soft. 



Genus. Gamasus.— Mandibles with pincers and toothed. 



Labium three-, deft. Leathery shield on hack. 



Family. ACAK1D.E. -Head terminated in front by a scooped 

 lip, or a single two-cleft projection. Palpi indistinct. Mandi- 

 bles with pincers. Eyes none distinct. 



Genus. Acarus.— Body divided by a transverse furrow be- 

 tween second and third pairs of feet. Four of the legs close at 

 their bases. 



Family. PEDICULIDiE. -Mouth composed of small retractile 

 beak, attached at base. Tarsi with a single arched claw. 



Genus. H.km.vtoI'IM's. — Antenna' eight-jointed, first joint 

 large. Thorax narrower than abdomen. Abdomen flat, legs 

 thick. 



Family. PHILOPTERID/E. -Antenna- thread-like, three or 

 five-jointed. Mandibles .strong. .No maxillary palpi. 



'■', '■»-. Trichodeutes. Antennae three-jointed. Tarsi one- 

 clawed. 



Genus. Mexopon. — Head broad. Antennae shorter than 

 head, club-shaped. Abdomen with ten segments. 



Genus. NlRMUK.— Body narrow, head moderate, temporal 

 edges rounded. Antennae not branched. 



Genus. Doroi'iioui s. Head large, nearly triangular, broad 

 at base. Abdomen broad oval. 



Genus. Gomodes. — Head large, body rounded. Antennae 

 sickle-shaped; in male forming a claw. 



Order. PSEUDOSCORPIONES. Cephalothorax united to 

 abdomen. Abdomen ringed. Palpi large, with pincers at tip. 



CLASS -MYRIAPODA. 



Head distinct — Thorax and abdomen united — Nut less 

 Hum t/eelre ]>airs of feet — No wings. 



<>r, I.e. CHILOPODA.— Head wide and prominent; mandi- 

 bles sharp and curved. A pair of feet on each segment. 



Tribe. SCHIZOTARSIA.—Anttuinse many-jointed, .slender, 

 larger than body. Legs long, unequal. Eyes compound and 

 globular. 



