120 E. A. Andrews — Atuitomy oftlie Spider Crab. 



Plate XXVI. 



Fig. 6. — Anterior face of locomotive appendaj^e of female ; about natiir;il size : 

 c, coxa ; cp, carpus ; hi, joint representing the basis and ischium ; d, dactylus ; pr, 

 propodus; to, merus; s, articular cavity; x, articular process. 



Fig. 7. — Anterior face of right chelate appendage of female ; about natural size : 

 t, spine; other letters as in fig. 6. 



Fig. 8. — Inner face of right mandible of male ; enlarged about two diameters : a, 

 inner edge to which is attached the cuticle bordering the mouth ; c, cutting edge ; p, 

 two-jointed palpus; n, m, vertical and horizontal portions of the internal part of the 

 mandible ; t, t\ tendons of the large and small adductors ; t'\ tendon of ascending 

 abd victor. 



Fig. 9. — Inner or posterior face of the first maxilla, right side ; male ; enlarged 

 about two diameters : ft, c, setose basis and coxa ; an, endopodite. 



Fig. 10. — Posterior face of the second maxilla, right side ; male ; enlarged about 

 two diameters: c, coxa; &, basis; en, endopodite; ex, lobe, which may represent the 

 exopodite ; sg, scaphognathite. 



Fig. 11. — Posterior face of the first maxiUiped, right side; male; enlarged about 

 two diameters : h, c, basis and coxa ; en, endopodite ; ex, exopodite, with its palpus, 

 p) ; e/», epipodite. 



Fig. 12. — Posterior face of second maxiUiped, right side; male; enlarged about 

 two diameters : Ir, branchia ; cp, carpus ; d, dactylus ; i, ischium ; j^r, propodus ; in, 

 merus ; other letters as in fig. 1 1 . 



Fig. 13. — Posterior face of the third maxiUiped, right side ; male ; enlarged about 

 two diameters. Letters ns in fig. 12, but the portioti, h, is not separated from i, oven 

 by a groove. 



•pxQ. 14. — Upper face of eye-stalk, right side; male; enlarged about four diam- 

 eters: a, basal joint, membranous on the posterior face ; h, second joint, firmly calci- 

 fied and terminating in the cornea, c. 



Fig. 15. — Outer face of right antennule; male; enlarged about four diameters: 

 a, b, c, joints, the distal bearing the filaments, /, g ; h, opening to the auditory sac in 

 the basal joint. 



Fig. 16. — Lower surface of the right antenna; male; enlarged about four diam- 

 eters : a, h, c, joints, and d, many jointed filament terminating the appendage ; o, 

 plate closing the opening of the duct of the green gland. 



Plate XXTII. 



Fig. 17. — Lateral view of the right side of the chitinous lining of the stomach ; 

 enlarged about two diameters : ac, accessory cardiac ossicle ; ap, ossicle forming a 

 rim to the postero- cardiac ossicle ; he, lateral cardiac ossicle ; d, three-pronged ossi- 

 cle, surrounding with its fellow the opening of the bile ducts; /, funnel-shaped 

 cuticular termination of the pylorus ; g, cardiac region ; h, opening for the bile ducts ; 

 il, infero-lateral cardiac ossicle, with its upper end, h, and its lower end imited to 

 the rim of a cavity, a, corresponding to the projection on the interior; ip, ip', ip", 

 infero-pyloric ossicles ; k, imperfectly calcified piece connecting the accessory and 

 supero-lateral ossicles ; Ip, lateral pyloric ossicle ; m, n, thickened areas set with setai; 

 ms, longitudinal mesopyloric ossicle ; o, lateral pouch or capsule ; ce, oesophagus ; p, 

 prepyloric ossicle ; pi, postero-lateral cariliac ossicle ; po, pyloric ossicle ; py, pylorus ; 



