SOUTH DEVON AND CORNWALL MARINE FAUNA AND FLORA. 283 



AVo eanuot turu away from this species without noticing the manner in 

 which the process of repair is carried on in the development of a new 

 flagellum to the inferior paii- of antenna. Mr. Lloyd, Conservator of the 

 Marine Zoological Collection at Hamburg, to whom the reporter is indebted 

 for the preparation from which fig, 4 in Plate III. is taken, -writes to us, 

 " The animal lost the antenna by accident, just where the jiincture with the 

 peduncle takes place ; and then the antenna began to grow in a spiral case, 

 the spiral growing larger and iacreasing the number of its turns as it grew 

 older, but never getting hard or coloured. "When the entu'e exuviation of 

 the lobster took place (in about foui- months after the antenna was broken 

 off), the antenna was di-awn out of its special case and came forth straight, 

 the spiral skin retaining its shape. Hardening of the antenna does not take 

 place (or at least it does not appear hard) tdl after exuviation ; and in like 

 manner the limbs of aU the lobsters here which renew their limbs." 



A specimen of the genus Axius was taken by Mr. Couch off Polperro, and 

 described by him as new in the ' Zoologist,' pp. 52-82, 1856 ; but we are not 

 aware that it has been since met with. 



We have taken what we beheve to be specimens of Crangonfasciatiis and CV. 

 scuJjJtus ; and a careful comparison of them Avith the descriptions and figures 

 of the authors has failed to convince us that they are not more or less spinous 

 varieties of the same species ; and in character they agree so well with the 

 description of Crangon boreas (Phipps) that it is difficult to believe that they 

 are not depauperized specimens of that large arctic species. 



Several specimens of Alpheus ruber have been taken on shelly ground off 

 the Dodman, and from the same locahty two other specimens of A. edwurdsii, 

 (PI. III. fig. 2) — which we beheve is the first time that this latter species has 

 been recorded as British. "We had them alive for several days. Their colour 

 is a brdliant crimson red, A. ruber being rather paler and more banded 

 than A. edwardsii. One peculiar and interesting feature in the structure of 

 this animal is the alteration of the character of that portion of the carapace 

 that covers and protects the organs of vision ; this, which is due not so much 

 to the anterior development of the carapace as it is to the eyes having re- 

 ceded beneath it, is so changed that, while it offers protection to the organs 

 of vision, yet it has become so transparent that it is only by close and careful 

 examuiation that, in the hving state, the relation of the two parts to each 

 other can be distingiiished. 



The next genus to whicli wo have to allude is one that is new to our 

 fauna. It was first described under the name of Tiipton by Costa, from 

 species taken at Naples as far back as 1844 (Annali dell' Acad. degU Aspir. 

 Mat. di Nap. ii.), by Grube (Ein Ausflug nach Triest und dem Quarnero, pp. 

 Go and 125), and in 1856 by Heller under the name of Pontonella (Verhand- 

 lungen des zool.-bot. Yereins in Wien, p. 627, Tafel ix. figs. 1-15). 



The British species differs in several points of detail from the figure of the 

 Mediterranean species given by Heller in his ' Crustaceen des siidlichenEm'opa.' 

 We have therefore considered it a distinct species, and have named it 



TyptOH spongiosum, of which the following is a short description : — 



Gen. CH.A.E. — Cai'apace short and deep, covering the entire pereion. Pleon twice 

 as long as the carapace, with the lateral walls deep. Eyes prominent, not 

 concealed under the carapace, superior antenna having a secondary branch. 

 First pair of pereiopoda equal, slender, long, and chelate. Second pair large, 

 in general the right much larger than the left. 



Spec. Chab. — Carapace liaving a short, simple rostrum. Eye longer tliau the 

 rostrum. Anterior antennse with the secondary appendage longer than the 

 primary; posterior antennas havmg the squamiform plate of the third joint 



