292 Prof. E. Ehlers on the new or little-known 



is a decided contraction of the body in the front part of the 

 fourth segment. Tliis difference is very noticeable when the 

 two specimens are viewed from above instead of in profile. 



The total length of each sjjccimen is about half an inch. 



The male it fell to my lot to discover in January of this 

 ])resent year, 1874. It was clinging to a small stalk of sea- 

 weed which had been dredged up in the neighbourhood of 

 Babbacdmbe beach. The following day the meshes of the 

 dredge, which had been plied off Hope's Nose, at a distance of 

 a mile or more from the site of our previous search, yielded 

 the female. This time Mr. W. Wilson Saunders, my companion 

 on both occasions, was the successful discoverer. The dredging 

 off Babbacombe had given us nothing of interest besides the 

 Arcturus and Crangon trisj^t'nosus ; that off Hope's Nose, in 

 water of more than 10 fathoms depth, supplied many scores 

 of specimens of Antedoji rosaceus (Goniatula) , the feather-star, 

 besides several crustaceans of more or less rarity, both stalk- 

 eyed and ^essile-eyed — including of the former Eurynome 

 aspera and Pennant's ^^a/«a, and of the latter Ampelisca Gai- 

 mardiiy Cerajjus abditus, Anthura gracilis^ Anceus maxillaris^ 

 and Idotea linearis. 



EXPLANATION OF PLATE XV. 



Fig. 1. Arcturus damtiomensis, male, enlarged. 



Fiff. 1 A. The same, seen from above, the tail curved over the body and 

 showing the imderside. 



Fiff. 2. Arcturus damnoniensis, female, enlarged. 



Fig. 2 A. The same, seen from above, the tail and part of the body fore- 

 shortened. 



XXXIX. — Annulata nova vel minus cognita in Expeditione 

 ^Porcupine'' capta. Recensuit E. Ehlees, M.D. 



To the Editors of the Annals and Magazine of Natural History. 



Gentlemen, 



You would greatly oblige me by giving, as soon as possible, 

 a place in your most valuable Journal to the enclosed paper, 

 containing the diagnoses of new or little-known annelids col- 

 lected in the ' Porcupine ' expedition, and lately examined by 

 me. I am. Gentlemen, 



Yours truly, 



Erlangen, March 11, 1874. E. EhleeS, M.D., P.P.O. 



Leanira Jigstricis, n. sp. ' 

 Corpus liucare depressum post paulo atteuuatum ; segmentis 50-60. 



