NO. 1154. AMERICAN MEROCHETA— COOK. 467 



CYPHODESMUS MEXICANUS (Saussure). 



OniscodeamuH mexicanus Saussure, Liniiiuii Eutom., 18.58, XIII, p. 328; Mem. 



Myr. Mex., p. 23, pi. i, figs 2-2d. 

 Cyphodesmus mexicanua Petkrs, Mouatsber. K. Akad. Wiss. IJerliu, 186-1, p. .530. 



Type. — Supposed to be in Paris. 

 Locality. — Cordova, Mexico. 



EXPLANATION OF PLATES. 



Platk XXIX. 



Oniscodesmiis oniscinus. 



Fig. la. First five segments, lateral view. 

 lb. Last segments, posterior view. 



Oniacodesm us m ier uriiH. 



2a. Body, lateral view. 



2b. First six segments, lateral view. 



2c. Head and first two Hcgmcnts, anterior view. 



2d. Antenna. 



2e. Leg from a middle segment. 



2/. Seventh segment of male, anterior view, showing below the copulatory 



and normal legs. 



2i/. Copulatory leg, anterior view. 



2li. Same, anterior-lateral view. 



2i. Same, posterior view. 



2j. Last segments, posterior-dorsal viow. 



2k. Same, ventral view, showing preanal scale and un.il valves. 



CyrtodcHmiis velutinuH. 



3a. First three segments, lateral view. 



3b. Cariuji' of segments 5 and 0, latero dorsjil vi<'W. 



Platk XXX. 



Detodeamus aitran tiacim. 



Fig. la. Copulatory legs, posterior view. 



lb. Last segments, posterior-dorsal view. 

 Ic. First six segments, lateral view. 



LignydeHtnua rnbricepa. 



2a. A body-segment and pair of legs, posterior view. 



2b. Last segments, posterior-dorsal view. 



2c. First and second segments, anterior-dorsal view. 



2d. Same, with head and antenna, anterior view. 



2v. First six segments, lateral view. 



2J', Seventh segment, dorsal view, showing the poriferous tubendcs. 



