800 



COMPENDIUM OF GENEEIC DISTINCTIONS. 



Tribe. A NCHORAS TO MA CE M. Females fixed to 

 prey by strong and hooked foot-jaws. Antenna) one pair. 



Fami'y. CHONDEACANTHAD^l. Foot appendages 

 large ; foot-jaws three pairs. 



Genus. CHONDRACANTHUS. Body covered with spines. 



Genus. LERNENTOMA. Egg-tubes long, sometimes stout, 

 sometimes slender and twisting. 



Trile. ANCHORACARPACE^E.Two long append- 

 ages from thorax, ending in sucking disc or knob. 



Family. LEKN.330PODAD.5iJ. Appendages united at tip. 



Genus. ACTHERES. Body rounded; head large; egg- 

 tubes pear-shaped. 



Genus. LERN^OPODA. In female, body long and oval ; 

 head short and thick. Foot-jaws two pairs. Male divided 

 into two nearly equal portions. 



Family. ANCHORELLAD.33. Arm-shaped appendages 

 short and united from base. 



Genus. ANCHORELLA. Female, head at end of very long 

 neck. Foot-jaws three pairs ; first and second large, third 

 very small. Egg-tubes moderate. Male very small. 



Tribe. A NCtfORA CERA CE^E. Females attached to 

 prey by head, which is held by horns from hinder part. 



Family. PENELLAD.33. Several pairs of small feet on 

 under surface of body, near head. 



Genus. I/ERNJ5ONEMA. Body long, slender, narrowed in 

 front and ending in swollen head, with two or three curved 

 appendages. Abdomen long ; ovaries long and slender. 



Genus. PENELLA. Body thick ; neck narrow ; egg-tubes 

 thread-like. 



Family. LERN.SCOCERAD.ai!. No feet or appendages 

 on under side of body. 



Genus. LERN^EOCERA. Body long and straight. Head 

 with horn-shaped appendages, simple, symmetrical Ovaries 

 straight. 



Genus. LERN.&A. Body twisted. Horn-shaped append- 

 ages branched. Ovaries twisted into round masses. 



Order. PYCNOGONIDES Trunk of four segments, 

 a tubular joint at each end, that in front constituting the 

 mouth. Feet of male four pairs, of female five pairs ; the 

 last pair adapted for bearing the eggs. Marine. 



Genus. PHOXICUILIDIUM. Feet very long ; two antennue. 

 Pincers. 



Gnus. PTCNOGONUM. Feet hardly longer than body. 

 No pincers. 



Order. XIPHOSURA Shell thick, two-jointed; the 

 junction transverse. Thoracic feet round mouth, abdominal 

 feet bearing branchiae. A long sharp appendage to hinder 

 shield, jointed to shield and covered with very thick skin. 



Genus. LBTOLUS. Front shield rounded in front ; hinder 

 angles sharp and pointed. Hinder shield irregularly hexa- 

 gonal, with fixed teeth and moveable spines alternating on 

 the sides. Eyes two, sessile, compound, on front shield. 

 Hot seas. 



CLASS. ABACHNIDA. 



Animals breathing atmospheric air Antenna none Legs 

 four pairs, attached to foreparts of body. 



Order. ARANEIDEA Not more than four breathing 

 holes. Abdomen covered with skin. Head and thorax 

 united. Palpi of male swollen at last joint. 



Trile. OCTONOC UL1NA .Eyes eight. 

 Family. MYGA.LID.S3, Spinnerets four. Breathing 

 apertures four. Falces bent downwards, curved. 



Genus. MTGALE. Eyes ( *. * )- Feet hairy, nearly 



equal, first and fourth pairs largest. Exotic. 



Genus. ATTPUS. Eyes on a "watch-tower" in front of 

 cephalothorax. Fourth pair of legs longest. 



Genus. CTENIZA. Mandible with a row of horny barbs 

 on outer sids, near claw. Jamaica. 



Family. LYCOSID5I. Spinnerets three pail's. Falces 

 jointed vertically. 



Genuf. LTCOSA. Eyes | "./'') Third pair of logs 



shortest. \ . . / 



Genus. DOLOMEDES. Eyes f \. Fourth pair 



of legs usually longest, third \ . * * . / pair shortest. 



Family. SALTICID.53, Throe pairs of spinnerets. Falces 

 jointed vertically on an inclined plane. Two breathing aper- 

 tures in front of abdomen and on its lower surface. 



/ . \ 



Genus. SALTICUS. Eyes ( . . ). Legs stout, 

 variable in length. . 



Genus. MYRMARACHNA. Head nearly distinct. Sida 

 hard. Abdomen swollen in middle. Bengal. 



Genus. ERESUS. Four larger eyes in a square/ \ 



Legs moderate, nearly equal in length. \ . . / 



Family. THOMISID.33. Three pairs of spinnerets. Tarsi 

 mostly two-clawed. 



Genus. THOMITSUS. Eyes in two rows, one in crescent 

 on part of a circle, with the convexity in front, nearly same 

 size. First and second pairs of legs longest. Lip blunt at tip. 



Genus. PHILODROMUS. - - Eyes in two transverse rows. 

 Legs long, variable. Lip triangular or oval. 



Genus. SPARASSDS. Eyes in two transverse rows, second 

 longer than first. Lip semicircular or oval. 



Family. DRASSID.33. Three pairs of spinnerets. Tarsi 

 with two claws and numerous papillae, or three claws and no 

 papilla. 



Genus. BRASS as. Eyes in two transverse rows, alike in 

 size. Lip long, oval, rounded at tip. 



Genus. CLIJBIONA. Eyes as before, slightly different in 

 size. Lip rather oval or squared. 



Genus. OLOTHO. Two upper spinnerets long. Falces 

 small and not toothed. Tongue triangular. North Africa. 



Gemt*. AUOTBONRETA. Eyes / * \ 



icdiate of front row smallest. Lip \ / 1 



Inter- 

 mediate of front row smallest. Lip \ / long, tri- 

 angular, wide at base, rounded at point. First pair of legs 

 longest. 



Fa::iili). CINIFLONID.ZE. Falces jointed vertically. 

 Spinnerets four pairs, lowest pair shortest. Three claws on 

 tarsi. 



Genus. CINIFLO. Eyes /.* * ) Intermediate 

 of both rows sessile, the pairs \ /on sides placed 

 on tubercle. Lip wide in middle. First pair of legs longest, 

 third shortest. 



Genus. ERGATIS. Eyes / * * V Two side pairs 

 on a tubercle. Lip large, \ * * / triangular. First 

 pair of legs longest, then second pair, third shortest. 



Family. AGELENID51. Falces jointed vertically on an 

 inclined plane. Spinnerets three pairs. 



Genus. AGELENA. 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, fron . 

 row straight, hinder curved, convexity backwards. Lip 

 squared, notched or hollowed at tip. Legs slender, either 

 first or fourth pair longest. 



Genus. CJELOTES. Eyes (,'**'.\ E^h side pair 

 on a tubercle. Lip curved \ /on sides, blunt at 

 tip. Legs strong, fourth pair longest. 



Genus. THERIDION. Eyes ('..') Sometimes 

 two side pairs close together. x ' First and 



se joud pairs of legs longest. 



Genus. LINYPHIA 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. EPEIRID^l.-^-Jaw widened from base, forming 

 rounded flattish plate. 



Genus. EPEIRA. Eyes ( * t\ Skin soft. 



Genus. GASTEROCANTHA. Skin hard and bony, covered 

 with spines, tubercles, and prominences of various shape. 

 Tropical countries. 



Genus. OTIOTUOPS. Hinder pair of eyes united. South 

 America. 



