SYNOPSIS OF THE ANIMAL KINGDOM 887 



[ENTOMOSTRACA]. Crustacea with varied number of pairs 

 of appendages ; usually of small size. BRANCHIOPODA, mandibles 

 without palps, numerous legs (127). TRILOBITA, fossil (130). CLA- 

 DOCKRA, mandibles palpless, few legs (126). OSTRACODA, palp on 

 mandible, only two pairs of legs (127). COPEPODA, elongated Crusta- 

 cea, with only one pair of maxillae ; females with external ovisacs 

 (127). CIRRIPEDIA, attached Crustacea (barnacles, 129). 



[MALACOSTRACA]. Crustacea with nineteen pairs of appen- 

 dages. AMPHIPODA (112). ISOPODA (112). CUMACEA (112). STO- 

 MATOPODA (111). PODOPTHALMATA : [MACRURA], large-tailed 

 Podopthalmata : Candida (104); Astacidce (97); Thalassinidce (105) ; 

 Paguridce (105) ; Hippidce (107). [BRACHYURA], crabs : Ozyrhyncha 

 (107) ; Cyclometopa (108) ; Catometopa (HO). 



[GIGANTOSTRACA]. Crustacea with five pairs of appen- 

 dages on cephalo-thorax, abdomen without feet; body ends in a long 

 telson, Limulus (11-4). 



ARACHNOIDEA. Air-breathing Arthropoda without antennae. 

 ACARINA, rnites (95). PYCNOGONIDA, sea-spiders (95). ARENEIXA, 

 spiders: Saltigradcv (90); Citigradce (89); Later! ffradce (89); Tubi- 

 telarice (88) ; Retitelarice (87) ; Orbitelariw (86) ; Terr it elci rice (85). 

 PHALANGINA, harvest-men (93). ARTHROGASTRA, scorpions (92). 



TRACHEATA. Air-breathing Arthropoda, with one pair of 

 an ten use. 



[MYRIAPODAJ. Tracheata with distinct head and abdomen, 

 all the segments of the abdomen bearing appendages. CIIILOPODA, 

 centipedes : Scutigeridce (75) ; Lithob.iidce (75) ; Scolopendridce (76) ; 

 Geophilidce (76). DIPLOPODA, millipedes : Julidce (76) ; Polydesm!<l<c 

 (77). SYMPHYLA : Scolopendrella (78), Pauroptis (77). 



[HEXAPODA]. Tracheata with only three pairs of legs, con- 

 fined to thorax. ORTHOPTERA, Hexapoda with two pairs of wings, 

 masticating mouth-parts, incomplete metamorphosis: Forficulidce (9) ; 

 Blattidce (8); Mantidce (8); Phasmidas (7); Acrid idee (2); Locust idee 

 (5); GrilUdre (4). XEUROPTERA, Hexapoda with two pairs of net- 

 veined wings ; biting mouth-parts, metamorphosis complete or in- 

 complete : Odonata (9); Ephemeridce (10) ; Termitidce (11); Sird'uhe. 

 Corydalis (12). HEMIPTERA, Hexapoda with two pairs of wings or 

 none, sucking and piercing mouth-parts, incomplete metamorphosis. 

 [HETEROPTERA], upper wings leathery: Reduviidce (12>. [HoMOp- 



