'SU: T. I). A. Cockerell's yotes on SIups. L>70 



1) PropJn/saou hnml'e. — I do not tool certain that the cha- 

 racter ut" the jaw is really specific ; it may be an 

 aberration, but this cannot be settled until we have a 

 series of specimens to examine. 1 have jilaced the 

 type specimen in the British Museum. 



(2) Prophysaon flavum. — The difference between the sole of 



this and pacijicum observed may be partly due to 

 postmortem contraction. Possibly ^ay^m is a variety 

 o'i pacijicum. 



(3) Projjhi/saon Andersoni, Coop., has priority over P. Ilemp- 



hillif B. & B., and I cannot detect any spc;cilic differ- 

 ence between them. P. Andersoni, W. G. B., 

 belongs to Fasciati, and is P.fasciatuni, Ckll. 



(4) Phenacarion is very near to Prophysaon ; indeed it is 



most difficult to separate P. foliolatuni and Pr. Heinp- 

 hilli specifically. I have not seen any good material 

 of Phen. Hemphilli^ \V. G. B., but it appears to be a 

 distinct species. If Phenacarion is not kept as a 

 genus and Projyh. Hemphilli is regarded as distinct 

 i\0VL\ Andersoni^ then P. {Phen.) Hemphilli will require 

 a new name. 



(5) Anadenulus CockereUi. — I at first referred this species, of 



which I saw the types, to Anadenus ; but it is really 

 distinct enough to be separated from it, besides being 

 American, wiiile the true ^/«a Jen i are Asiatic. The 

 genital orifice in true Anadenus is quite a long way 

 from the right eye-peduncle, as in Ariolimac. 



(G) ArioUmax columhianus and californicus are hardly to be 

 separated as species ; californicus is more keeled and 

 has a narrower sole. A. Hecoxi, a third species from 

 the United States, has never been described, and 

 cannot be recognized. Mr. Binney informs me it is 

 a large species. 



(7) Ar. Andersonij W. G. B., is a doubtful species, probably 

 a variety oi A. niger. The "foliated appearance" is 

 not specific, as it occurs also in A. niger. 



ArioUmax costaricensis, subsp. nov. 



A. californicus^ subsp. — Length QS millim. (in alcohol), 

 mantle 27 millim. long, respiratory orltice 19 niillini. from 



20* 



