xxn 



A MONOGRAPH OF THE 



Gen. 34. 



Gen. 35. 



Gen, 37. 



Gen. 33. Facelina, A. and H. Body rather slender; dorsal tentacles 

 laminated ; oral tentacles long • branchiae linear, or fusiform, 

 clustered; foot narrow, with the anterior angles acute and 

 much produced. Spawn of many undulating coils. Tongue, 

 a single plate with a large central spine and marginal 

 denticles ..... 

 Coryphella, Gray. Body slender; dorsal tentacles simple . 

 branchiae linear or fusiform, clustered ; foot narrow, with the 

 anterior angles much produced. Spawn of many undulating 

 coils. Tongue, a single plate with a large central spine and 

 marginal denticles, and 2 separate lateral spines denticulated 

 on the inner margin .... 



Favorinus, Gray. Body slender ; dorsal tentacles with a bulbous 

 swelling ; oral tentacles long ; branchiae linear, flattened, in 

 distant transverse rows, the anterior rows double; foot 

 narrow, with the anterior angles much produced. Spawn of 

 many plain narrow coils. Tongue a single plate with a single 

 smooth spine .... 



Gen. 36. Phidiana, Gray. Body stout; dorsal tentacles clavate, lami- 

 nated ; oval tentacles very large ; branchiae in close, transverse 

 rows ; sides of the foot rounded. Tongue? 

 Eolis, Cuv. Body depressed, rather broad; tentacles linear, 

 simple ; branchiae a little flattened, set in numerous close, 

 transverse rows; foot broad, anterior angles acute. Tongue 

 ivith a single broad plate, uniformly pectinated. 



a. Lingual spine a single arch 



b. Lingual spine a double arch 

 Cuthona, A. and H. Body depressed ; tentacles simple, linear ; 



branchiae clavate, in close-set rows ; head much produced at 

 the sides; foot broad, with the anterior angles rounded. 

 Tongue, a single plate with a large central spine and marginal 

 denticles ..... 

 Gen. 39. Cavolina, Cuv. Body rather slender; tentacles linear, simple; 

 branchiae linear, generally in rather distant transverse rows ; 

 foot narrow, with the anterior angles rounded. Spawn 

 slightly coiled. Tongue, a single denticulated plate with the 

 central spine not prominent. 



a. Branchiae in rather close rows 



b. Branchiae in rather distant rows 



Gen. 40. Galvina, A. and H. Body stoutish ; tentacles linear, slender ; 

 oral pair short ; branchiae in rather distant rows, fusiform, 

 inflated ; foot with the anterior angles rounded. Spawn 

 generally cup-formed. Tongue, a central plate with large 

 denticles and stout central spine, and 2 separate plain 

 lateral spines. 



a. Branchiae much inflated 



b. Branchiae not much inflated 



TYPE. 



Gen. 38. 



F. coronata, For. 



C. run bran chialis, Johns. 



F. albus, A. & H. 



P. Patagonica, D'Orb. 



E. papillosa, Linn. 

 E. glauca, A. & H. 



C. nana, A. & H. 



C. aurantiaca, A.hH. 

 C. viridis, For. 



G. tricolor, For. 



G, cingulata, A. & H. 



