278 Mr. T. D. A. Cockerell's Notes on Slugs. 



Sect. b. Ccendei. Body without dorsal band, reticulation compara- 

 tively simple iii. P. cceruleum, Ckll. 



Sect, c, Typici. Body with a pale dorsal line. 



iv., V. Ochreous species. P. pacificum, Ckll., and P. flavmn, 

 Ckll. (prsec. var. ?). 

 vi., vii. Greyish species. P. Aridersoni, Coop., and P. Ilcnip- 



hilli, B. & B. (pra;c. var.). 



(2) With a caudal mucus-pore. Gen. (praec. subg.) Phenacarion, Ckll., 



1890. 



i. Back with no dark band. 



P. foliolatum, Gould, 

 ii. Back with a dark band. 



P. Hemphilli, W. G. Binn. 



B. Sole differentiated into parts ; respiratory orifice nearly median or 

 slightly posterior. 



(1) No caudal mucus-pore. 



(Irt) Genital orifice close to right eye-peduncle ; back keeled. 



Gen. nov. Anadenulus, Ckll, 

 i. A. Cocherelli, Hemph. 



(16) Genital orifice not close to right eye-peduncle ; back not keeled. 



Gen. Anadenus, Heyn., 1863. 

 Sect. a. Sulcati. Body with deep transverse sulci. 

 i. A. Jerdoni, G.-Aust. 



Sect. b. Altivagi. Body with oblique fine sulci. 



ii. A. altivagus, Theob. 

 iii. A. mndestus, Theob. (prsec. juv. ?). 

 iv. A, SchlaginUveiti, Heyn. 



(Sect. ? v., vi. A. Blanfordi, G.-A., A. insignis, G.-A., not seen by me.) 



(2) With a caudal mucus-pore ; genital orifice not close to right eye- 

 peduncle Gen. Ariolimax, Morch, 1860. 



Sect. a. Maximi. Large species. 



i. A coliimhianus, Gould. (California 



to British Columbia.) 

 ii. A. californicus, Cooper. (Cali- 

 fornia.) 

 iii. A. costaricensis, Ckll., nov. (Costa 

 Rica.) 



Sect. b. Parvuli. Smaller species. 



iv. Sole mottled .... A. niger, Coop, 

 V. Sole not mottled . . A. Hemphilli, W. G. B. 



(Also of this genus: vi. A. Andersoni, W, G. B. ; vii. A. Hecoxi, 

 Weth., spp. dub.) 



Later on I shall have to publish some rather copious notes 

 on the American species ; meanwhile it will be useful to 

 note :— 



