B. 2. Systematic, b) Cephalopoda. 67 



row of connective suckers, alternating with tubercles, along one margin; with a 

 central row of unequal hooks, some of them very large : with submedian groups 

 of small , slender pedicelled suckers (or hooks) ; with marginal series of small 

 suckers ; and with several rows of small suckers covering the prolonged distal 

 portion of the face. Connective cartilages on the base of the siphon, simple, 

 long-ovate , the corresponding processes of the mantle are simple longitudinal 

 ridges. The caudal fin, pen and many other parts are destroyed ; Verrill ( 2:17 , 

 p. 292 rapax\ id., p. 293, T. 49. F. 1. 



Chiroteuthis (d'Orb.j lacertosa n. Neu-England ; Verrill ( 237 ), p. 408, T. 5G. F. 1. 



Lestotenthis Verrill nach Steenstrup ( 217 ) identisch mit Gonatus Gray. Auch Ony- 

 choteuthis fabricii Licht. = Jtamtschatica Midd. nebst deren Jugendzustand amoena 

 Moll, gehoreu hierher, sowie theilweise Owenia Prosch. 



StenoteutJiis Verrill nach Steenstrup f 217 ) identisch mit Ommastrephes d'Orb. und 

 Cycria Leach. 



Desrnoteuthidae n. 



Verrill ( 237 j errichtet p. 300 diese neue Familie fur Taonius Steenstr. und Des- 

 moteuthis n. g. mit folgender Diagnose: Body very long, tapering backward to 

 a long, slender, acute caudal portion. Caudal fin long, narrow, tapering to a long- 

 acute tip. Anterior edge of the mantle united directly to the head, on the dorsal 

 side, by a commissure, so that there is no free edge, medially, and the surface 

 is continuous, as in Sepiola ; the dorsal commissure extends backward and diverges 

 within the mantle ; two additional muscular commissures unite the lateral inner 

 surfaces of the mantle to the sides of the siphon. Eyes very large and prominent, 

 with simple circular lids. No aquiferous pores. Siphon large and prominent with 

 neither valve nor dorsal bridles. Arms small and short, subequal, with a basal 

 web and lateral membranes; suckers smallest on the ventral arms, and urceolate, 

 largest and flatish on the middle of the lateral and dorsal arms; feably toothed. 

 Pen extending the whole length of the body, very slender and of uniform width 

 for more than half the length, then becoming broad-lanceolate, the terminal por- 

 tion having the edges involute, forming a long slender cone, into which the ovary 

 extends. Nidamental glands large, symmetrically developed on the two sides. 

 Gills small, situated in front of the middle of the body.- -Typus 1st D. (LeacJiia 

 hyperborea Steenstr. tenera n. Neu-England; id., p. 412, T. 55. F. 2, T. 56. 

 F. 3. 



Sepiolidae. 



Jncoteuthis n. g. Body, lateral fins, and dorsal commissure of the mantle as in 

 tiepiola; lateral connective cartilages of the siphon oblong-elliptical, with the 

 groove open behind, fitting a linear ridge on each side of the mantle. Eye-lids 

 free below, adherent above. Pen absent. Arms webbed only slightly, at base ; 

 suckers, both on sessile arms and tentacles, as in Rossia. Left dorsal arm hecto- 

 cotylized somewhat as in Sepiola, Rondcletl, but more extensively, with a large, 

 prominent, fleshy, concave, ear-like structure near the base, extending across the 

 inner surface of the arm, and replacing both rows of suckers, their pedicels be- 

 coming confluent with the marginal membrane ; Verrill ( 237 ), p. 417 japonica 

 n. und Mursei n., beide von Japan; id., p. 417. 



Rossia (Owen) megaptera n. Neu-England ; Verrill ( 237 , p. 349, T. 38. T. 46. F. 6. 



Stoloteuthis n. g. Body short and thick, well rounded ; head large, united to mantle 

 by a broad dorsal commissure. Eyes large ; pupils round ; eye-lids free all 

 around. No pen. Mantle thick, extending farther forward beneath than later- 



