44 CLASSIFICATION. 



thoriix and preabdomen n's])ectivoly. Buccal plate shiold-shape. Largest 

 spines relatively .slender without tlefinite keel. Alaska. (]i. (iS.) 



C. scabrd, sp. uov. 



Small, measuring 12 mm. in length by 2 mm. greatest diameter. Body 

 wall relatively thin. Brownish, becoming olive-green in region of digestive 

 gland. Monterey Bay, California (p. (j3.j 



Limifossor Heath, llt(l4. 



Body short. Radula very large, distichf)us, with twenty-eight transverse 

 rows in L. tdlpoidcus (about the same mnnb<'r in L. fntluhi). Doi'sal salivary 

 glands present. Stomach antl digestive gland well develojied, and distinct from 

 intestine. Type of genus, L. talpoidcus. 

 L. fratula, sp. no v. 



Slaty gray with yellowish cast. Spines from middle of body Cf) nnn. long. 

 Length index 1.3-4.7. California, (p. 72.) 

 L. tdlpoulvufi. 



Slaty gray in color. Spines, from all i)arts of the body, 0.02-0.38 mm. in 

 length. Length index l-li. Alaska, (p. 09.) 



NEOMENIIDAE Simhoth. 



Body compressed, more or less crescent-shaped, without distinct divisions. 

 Index 7 at most. Opening of atrium ventral, of the anal chamber ventral ( r 

 terminal. Ventral furrow present, usually with several folds. Cuticle some- 

 times comparatively thick, spines mostly needle-like, flat, grooved, or hollow. 

 A circlet of gills in the anal chamber. Radula and salivary glands usually lack- 

 ing. Epidermal i)a]iillae, cf simjile structure, usually ])resenl. Fore gut i)r(i- 

 trusible. Coelomoducts separate or united to form shell gland or copulatory 

 organ. Digestive gland lacking. Penial spines usually present. Free, creeji- 

 ing abont over bottom. 



Drepanomenia, ixrn. nov. 



Body short and thick. Hollow needle-like si)in( s with truncated bases; 

 .slender stalked pajjillae. Wntral salivary glands long and tubular. Coelomo- 

 ducts simple, without appendages. No co]nilatory apparatus. Type of genus 



D. vamprjrclla , s]i. nov. 



With characters of the genus. Hawaii, (p. 77.) 



