724 DEEP WATER MOLLUSKS AND BRACHIOPODS— BALL. voL.xvn. 



It is sufficiently distinct from all described recent siDecies to make no 

 comi^arisons necessary. Only two specimens were obtained. 



? MACANDREVIA . 



At station 347G, in 298 fathoms, near the port of Honolulu, a single 

 specimen of a bracbiopod in the cistelliform stage was obtained. It 

 is, of course, too yonng to determine the species or even the genus to 

 which it belongs. ' However, it may pretty certainly be stated that it 

 is not a young stage of the common Hawaiian species usually known as 

 Ismcnia or 2[uli{feldt'ia sanguiiiea, Chemnitz,* and probably indicates 

 the presence of a species in the Hawaiian fauna which has not yet been 

 enumerated from it. In this connection an apparent misapprehension- 

 may be corrected. The name Fremda was proposed by me in 1871 for 

 a brachiopod, which I named subsequently Ismeniajeffrei/si, and which 

 has since proved to be the ismeuiform stage of Laqueus Vancouver ensis^ 

 Davidson. I joined with it the Ismenia sanguinea (Chemnitz) Gray, 

 because of the identity of form of the brachidium in both. Gray had 

 referred Anomia sanguinea. Chemnitz, to Ismenia, King (part). But it 

 appears that the original Ismenia of King is not of this character, and 

 the name must be kept for Terehratula pectunculus, Schlotheim, for 

 which it was i^roposed. Fremda having been proposed for a young- 

 stage of my earlier subgenus Laqueus (type Terehratula californica, 

 Koch) can not be applied to the species sanguinea, which represents in 

 its adult condition the stage whicTi in Fremda proper is only a phase 

 of development. Both the loop and surface of the sanguinea differ dis- 

 tinctively from those of Muldfeldtia truncata, and if they are placed in the 

 same genus the former requires to be sei)arated subgenerically. I 

 would therefore propose for the Anomia sanguinea, Chemnitz, the sub- 

 generic name of Frenulina, a conclusion in which the late Dr. David- 

 son acceded in letters received from him before his premature and 

 lamented decease. By a lapsus, in a footnote to Beecher's Revision 

 of tbe Families of Loop-bearing Brachiopods,t it is stated that 

 '■'■Megerlinajeffreysi was given to a stage of Laqueus ^^'^ etc. Here Frenula 

 is meant, Megerlina being based on Krau.ssina lamarcMana by Deslong- 

 champs. It has also been stated by Oehlertf ih^t Fremda was applied 

 to a " stage of Ismenia sanguinea,^'' an error doubtless inherited from an 

 obscure remark by Deslongchamps to the same effect. These misap- 

 prehensions, I hope, will be cleared up by the statement of facts I have 



just given. 



Genus LAQUEUS, Dall. 



To the species belonging to this group may be added T. hlanfordi, 

 Dunker, of Japan. I have received some veiy tine adult specimens 

 which show conclusively that this species has the loop of Laqueus. 



* As Chemnitz was not strictly binomial in his nomenclatui-e, it is probable that 

 Gmeliu's name of sangiiiuolenta should be adopted for this species. 

 tTrans. Conn., Acad., ix, p. 383, March, 1893. 

 t Fischer, Man. de conchyliologie, p. 1321. 





