Kekrv— I\E\iE\v ov C}=:phaloi'()I) Genera 357 



aa. 'I'entacles as tliick or tliickur lliaii the arms, bearing suckers 

 for UKjre tlian half llieir length: \entral arms of male 

 with several or many normal suckers . . . . . . 2 



1. I'ody minute (total length 12-15 'imi.). sepioliform, 



more or les^ rounded behind; ventral arms of 

 male distal to basal sucker smooth, suckerless, the 

 right arm much thicker and heavier than its mate ; 

 tentacles very cons])icuously m<ire slender than 

 the arms . . . . . . . . . . . . f^yi/iiuicits, [>. 357 



r. Body larger (mantle length 17 mm.), elongate, 

 tapering posteriorly ; right ventral arm of male 

 very short an<l broad, heavily transversely plicate 

 on the oral face distal to the basal sucker, the 

 aboral surface with a deep longitudinal groove ; 

 left ventral arm of male more slender and longer 

 than its mate, the portion distal to the very minute 

 basal sucker .smooth, and the tip made bilobate 

 by the projection of a small, tongue-like process 

 on the oral face . . . . . . . . . . pictctl. p. 359 



2. Boch' small (mantle length 10 nun.) ; right ventral 



arm in male with 3-5 suckers at base, otherwise 

 bare ; left ventral arm in male with 4-7 suckers 

 at base, otherwise bare excejit for a semi-circular 

 membrane on the dorsal side near tip . . . . /paradoxus. ]i. 35S 



2'. Body larger (mantle length of male 15 'S, of 

 female 21 ■(< nnn. ) : strongly sexually dimorphic: 

 both ventral arms in male normally suckered for 

 most of length, the right a trifle shorter than its 

 mate, its extremity only bare: left similar but 

 the til) furnishe(l with two cons[)icuous fleshy 

 flaps . . . . . . . . . . ■ • . . iiotiiidcs. p. 361 



IDIOSEPIUS PYGMAEUS Steenstrup, 1881. 



1581. JdioscpiKs /^yunuu-iis Steenstrup. K.U. \id. Selsk. Skr. (6), i, p. 219. 236 



(y, 26). j.l. i. fig. 11-22. 



1582. Jdiosef'ion pygiitaciiin Fischer. Alan. Conchyl.. p. 351, text fig. 12S (after 



Steenstrup). 



