THE GERM-CELLS AND THE PROCESS OF FERTILIZA- 
TION IN THE CRAB, MENIPPE MERCENARIA! 
RAYMOND BINFORD 
Guilford College, North Carolina 
NINE PLATES 
CONTENTS 
LPT OCUCULONME: meer rit As iat erie r Pe ene a or ais iainie sare Mcieee ae ache fob cae 148 
A Sieh Cin SRR, eb ie Ost nk Mr dane PA 618 6B 148 
PING eh etter me > ee od Oe USL oe Ans ab Aes ore = ote Be ace cre Soar: va OS 148 
INGO Sie mrs sere erate, art ee Ae Etna aap g As hae g onan iE tale dave si see P Ese 149 
iMhestesticulan Gubwlese nek: wees 4 cee ees ee ete hasta ase. srauel n/a ater ene eae 149 
General statement Of SpermalvOgenesis. 0.6). okie ss oe eye ee ce ee oe 151 
eS PeERIATOROMIAL: MILHORES! 2/5 5 c's oh acs hablo asi) atte eaters» os lh a oe sane 152 
Mirai iieahOMRUMUOSES Mrmr eee stents cs cue evar cana ince ies eval pete epeearercts 152 
The transformation of the spermatid into the spermatozoon........... 154 
Sines OER NUOMOOUNS Mere N tect Se oer osc Gh,» nals ee © cram uaa nt as on ale oat 158 
Spermatozoumnevheydererent: GuGbess: 4-0 sic eae. eervs = 0 ges oon roe 159 
ID SSDI Sis NS 2s SSR AO ge Sent see eR eee ee 159 
5 (CHOP UES Ae Bes ARN Coa NO ie TUE nae ie gh a 161 
ee arta TT OMIT TS Soe ete SEN oer ery AS oP cin daa Ae Dok reoe hepectiore + eee em 161 
Deb heieproduetiverorgans Ol bMesteMaless. caccie= «-\oo-)- eee cs ae ae 162 
Ge ,Lbe peuaVvior Of TAC SPerMaLOZOD. 2.02 <5.) lei ns dete eww citeele sede ee Sine see 163 
PPTs erCNCa NAT UUULer Ae re Pee Coys nee ne Sashes ies ei tetera ee oe alas ea 164 
RAN Pes ite Me UMATCLOATV GUID. acta sees. c-2 oeug fv sess seated ole wala “ela 1 eae 165 
rae ee Maye eA SUE Ie ai, Saco ise 2 te bt Was cee aters ic 2 ale ialays 3 eee 165 
Se rraieeean in ui es Cemmbe al OD Ye ce ass op orl = iets caer 4e sn oie Sey ye ee 167 
MPN oy ATTIC ORE VEU SION So oye. = hs ose Goesisle eR Gea cha rise ele ain © o aleneeeneey 168 
The effect of reagents on everted spermatozoa.................0000055 172 
(ee bhetentran cevomunerspenmamtOZOOM is ce). 6.22 aeeyaree sche nls a) 21s) 010 ecleen ase 172 
eh, INGA H IO Geen Aeon tee be Oe es SERIES Beri oy of Cee ae into, oc 175 
Sl, LOTS CIP SISG Re co US 7A, ae a Uae Oe | I-A OI 177 
HQ): “ASHUMTAUSD EVEN my Gace ccntits Ordos Oi eeneet Ee opiciet BiDRe I Racca teneneee ick Ice aR REIS Seo 179 
PT IREMC HEC e. it ea ee, SSR ELS Re aM Mela a ook g a « win cid haere 182 
1 The study of the life-history of Menippe mercenaria, which led to the dis- 
coveries presented in this paper, was undertaken at the suggestion of Prof. E. 
147 
JOURNAL OF MORPHOLOGY, VOL. 24, No. 2 
JUNE, 1913 
