of the Gulf of St. Lawrence. 269 



cupine ' expedition (a species also having smooth scales) by 

 the condition of the median tentacle, which with the other 

 parts conform to the arrangement in L. tetragona. The scales 

 are delicate, translucent, irregularly rounded in front, reniform 

 posteriorly, and ])erfectly smooth round the ruargin. The 

 dorsal bristles have, perhaps, more closely arranged rows of 

 spikes than in L. Icevis. The inferior bristles (PL X, fig. 14) 

 have delicately tapered tips, with faint spiral indications in- 

 ternally. The latter differ, of course, according to the position 

 in which they are viewed. The ventral cirrus is considerably 

 longer than in L. tetragona or L. hevis ; and the digitate ap- 

 pendages of the lobes of the feet also differ from both. Dr. 

 Malmgren states that his L. Y/ileni has distinct eyes, and 

 adds that (with the exception of the smooth scales) it agrees 

 with L. tetragona. His notice is so very brief that it is impos- 

 sible to distinguish forms so closely related to each other. 

 The fourth species of the group is the common Pholoe minuta^ 

 Fabr., which has a wide range. 



Several remarks on the Annelida of the neighbouring 

 shores of the United States have been made. Amongst others 

 Dr. Stimpson, in his ' Synopsis of the Faima of Grand Manan 

 in the Bay of Fundy,' mentions Euphrosyne horealis, CErst., 

 Cryptonota citrina, n. sp., Lepidonota cirrata^ CErst., L. punc- 

 tata^ QErst., and L. scahra, Qlirst. The second is probably a 

 Spinther ; the next two are doubtful ; and the third is Nychia 

 cirrosaj Pallas. Dr. Leidy *, again, considers L. punctata of 

 the former author to be another species, which he terms L. ar- 

 madillo, Bosc; it has dilated cirri, with a black ring, but differs 

 from L. clava, Mont., in having cilia on its scales. He also 

 states that Sigalion mathildce, Aud. & Edw., is found on these 

 shores ; but the figure of the head given (fig. 53, pi. xi.) shows 

 the prominent median tentacle of a Sthenelais ; so that some 

 other form is meant. In his recent paper Prof. Verrill indi- 

 cates " Hermione hystrix(?) " as formerly noted, and "Antinoe 

 Sarsi/^ Kbg. 



EXPLANATION OF THE PLATES f. 



Plate IX. 



Fig. 1. Terminal portion of a dorsal bristle oiLagisca rarispina, var. occi- 



dentalis. X 210 diam. 

 Fig. 2. Superior ventral bristle of the same species. X 90 diam. 



♦ Contrib. &c. Marine Invert. Fauna of Rhode Island, 1855. 

 t Unfortunately the details in certain of the tigures deviate from the 

 originals. 



