MR. E. J. MIEES ON GREENLAND CRUSTACEA. 61 



through the circ urn polar seas ; and S. I. Smith records it from 

 several localities on the North -Atlantic American coast. 



Mr. Kingsley, who is engaged upon a monograph of the North- 

 American Caridea, and who has recently published, in the ' Bul- 

 letin of the Essex Institute,' vol. x., a most useful critical list of 

 all the North- American species, is of opinion that the genus 

 Cheraphilus as denned by Kinahan cannot be maintained, as " it 

 has not a single character common to all the species to separate 

 it from Crangon, as restricted by him." Even if this be the case, 

 it does not follow that the name, having been published, should 

 not be used with a slightly modified definition of the genus, more 

 especially as the genus Crangon, even in the sense accepted by 

 Sars, includes species so diverse in the sculpture of the carapace 

 and postabdominal segments. In my Beport on the Arctic 

 Crustacea I adopted Kinahan's term Cheraphilus, as I considered 

 it would be useful to retain it as a separate designation for those 

 species of Crangon which, like C boreas and C. salebrosus, Owen, 

 are of very large size, with median and lateral series of spines on 

 the cephalothorax, and with all the segments of the postabdomen 

 longitudinally keeled above, in contradistinction to the smaller 

 less robust species (e. g. C. vulgaris, franciscorum) , in which the 

 cephalothorax and postabdominal segments are nearly smooth. 

 Nevertheless, not being acquainted with all the species, I retain 

 the name here merely as a sectional division of Crangon in the 

 sense indicated above ; intermediate forms undoubtedly occur, 

 and there is no modification in the structure of the limbs of the 

 cephalothorax, such as exists, for instance, in the allied genus 

 Sabinea, Owen. 



HlPPOLYTE SPINUS. 



Cancer spinus, Sowerby, Brit. Miscel. p. 47. pi. xxiii. (1806). 



Hippolyte Sowerbei, Krdyer, Monogr. Hippolyte's nord. Arter, p. 90, 



pi. ii. figs. 45-54 (1842). 

 Hippolyte Sowerbyi, M.-Edw. Hist. Nat. Crust, ii. p. 380 (1837). 

 Hippolyte spinus, Bell, Brit. Crust, p. 284 (1855) ; Miers, Ann. fy Mag. 



Nat. Hist. (ser. 4), xx. p. 59 (1877). 



Two small specimens were dredged off Hare Island in the same 

 rich haul in which so many of the species here noticed were 

 obtained. One is a female with ova. In this specimen the two 

 last teeth of the median dorsal crest are simple. In the other 

 specimen the teeth of the dorsal carina are themselves denticu- 



