CLASSIFHATION. 45 



Pachymenia, gon. nov. 



Body stout, measuring 27 l)y 4.") mm. Ouo layer of awl-like spines, papillae 

 nuilticeilulai' with broad bas(>s, ])osteriiirly ill defined. Pharynx very large 

 and muscular with numerous glands some of which open by one pair of duets at 

 forward border of j^harynx. Dorsal and xciitral limbs of eoelomoduets providetl 

 with numerous glands. One ])air of small seminal receptacles. Cloacal wall 

 covered with glands e.xcept region of branchial folds. No eopulatory spines. 

 Type of genus 

 P. cibijsftorum, sp. nov. 



With characters of the genus. California, (p. 72.) 



PRONEOMENIIDAE Simroth. 



W(jrm-like. Radula distichous or polystichous, sometimes lacking. Sali- 

 vary glands tuljular, lobed or lacking. Cuticle thick, spicules mostly needle- 

 like in several layers. Epidermal papillae present. Gills usually lacking. 

 Coelomodui'ts usually united into shell gland, sometimes separated. Copulatory 

 apparatus may be present. Free living, partly or entirely parasitic. 



Proneomenia Hubrecht, ISSO. 



Body elongated, vermiform, the length 9-50 times the diameter. Cloaca 

 opening ventral. Foot present, the groove passing into the cloaca. Cuticle 

 thick with crowded spicules. No gills. Radula multidentate. Two salivary 

 glands. Copulatory organs present or absent. Type of genus, P. sluiteri. 



P. lunraiieiisis, sp. nov. 



Length 36 by 2 mm. Doi-sal and ventral salivary glands. Radula with 

 3S-40 teeth in each transverse row. One pair of seminal receptacles. No 

 copulatory organs. Hawaii, (p. 82.) 

 P. insu'aris. sp. nov. 



Anterior end similar to the foregoing species (posterior end missing). One 

 ])air long, tubular salivary glands. Radula polystichous with 28 transver.se 

 rows. Hawaii, (p. 90.) 



Driomenia, yen. nov. 



Measurement 9 by 1 mm. Cuticle thick, papillae present, spines needle- 

 shaped, slightly curved. Atrium separate fiom mouth opening, no radula, one 

 pair globular ventral salivary glands. Antero-lateral pericardial wall prolonged 



