with Hartnian in recognizing Calif a as a valid 

 genus. 



Generic definitions 



Having considered the main distinguishing 

 features of the various genera and subgenera 

 of the subfamily Orbiniinae, their diagnostic 

 characters are set out below. It will be noted 

 that certain characters are not mentioned since 

 they are regarded as being of specific impor- 

 tance only. Among these are the notch in the 

 neuropodial lobe of the thorax, the presence of 

 a lamellar base or ventral cirri on the abdominal 

 neuropodia, the presence or absence of flail- 

 setae, and the number of acicula in abdominal 

 neuropodia. Again, the presence of only one 

 achaetous segment behind the prostomium is 

 omitted for this applies to all genera of the 

 Orbiniinae. 



Naineris Blainville, 1828 



Orbiniinae with prostomium rounded to square 

 in front. First pair of branchiae starting on any 

 thoracic .setiger from 2 to 23. Thoracic neuro- 

 podia with none to two foot-papillae; no stomach- 

 papillae. Thoracic neurosetae include crenulate 

 capillaries, hooks and sometimes .subuluncini 

 (intermediate forms) as well. 



Tupe .s'/jfc/cs'.' Mu'.s- qiiadrlciispida Fabricius, 

 1780. 



Orbinia Quatrefages. 1865 



Orbiniinae with prostomium pointed. Finst pair 

 of branchiae on setiger 5-9. Posterior thoracic 

 segments usually with several foot-papillae and 

 numerous stomach-papillae but with at least 

 five papillae of both types combined on some 

 thoracic segment. Thoracic neurosetae include 

 blunt hooks (exceptionally replaced by subu- 

 luncini in 0. e.vttr))nita) and usually crenulate 

 capillaries; heavy spear-tipped spines or brush- 

 tipped setae absent. 



Tjipr spcciet<: Aricia sert/ilata Savigny. 1820 

 (includes Aricia ciivieri Audouin and Milne- 

 Edwards, 1833). 



Phylo Kinberg, 1866 



Orbiniinae with prostomium pointed. First 

 pair of branchiae on setiger 5-7. Resembles 

 Orbiiiin in having posterior thoracic segments 



usually with several foot-papillae and numerous 

 stomach-papillae but with at least five papillae 

 of both types combined on some thoracic seg- 

 ment. Thoracic neurosetae include heavy spear- 

 tipped spines as well as blunt hooks and crenu- 

 late capillaries. 



Tijpc species: PInilo f< li.r Kinberg, 1866. 



Scoloplos Blainville, 1828 



Orbin iinaew it h ])rostomium]}ointed. First pair 

 of branchiae on setiger 5 or some subsequent 

 thoracic segment. Posterior thoracic segments 

 with few or no foot-papillae and stomach-papillae 

 and never more than four ijapillae of both types 

 combined. Thoracic neuro.setae include blunt 

 hooks and usually crenulate capillaries; heavy 

 spear-tipped spines and brush-tipped setae 

 absent. 



Type species: Lmnhriciis ai-itiiijer Miiller, 

 1776. 



Subgenus Scoloplas (Sculnplns). - Seolophis 

 species with first pair of branchiae on setiger 

 8-10 or some subsequent thoracic segment. 



Subgenus Scoloplos (Leodumas). - Scoloplos 

 species with first pair of branchiae on setiger 

 5-6. 



Ti/pe species: Leodainas vei-a.v Kinberg, 1886 



Haploscoloplos Monro, 1833 



Orbiniinae with pro.stomium pointed. First 

 pair of branchiae on setiger 9 or subsequent 

 thoracic segment. Posterior thoracic segments 

 with few foot-papillae and stomach-papillae 

 and never more than four papillae of both types 

 combined. Thoracic neurosetae include crenu- 

 late capillaries only. 



Type species: Se(doplos cylijidrifer Ehlers, 

 1905. 



Califia Hartnian, 1957 



Orbiniinaewith prostomium pointed. First pair 

 of branchiae on setiger 8 or subsequent thoracic 

 segment. Posterior thoracic neuropodia with not 

 more than two foot-papillae. No stomach-papil- 

 la. Thoracic neurosetae of anterior segments 

 include brush -tipped setae, crenulate capil- 

 laries and sometimes blunt hooks. 



Type species: Califia calida Hartman, 1957. 



In accordance with these amended generic 

 definitions certain species will have to be trans- 



87 



