528 REV. I. R. E. STEBBING ON CEUSTACEANS [May 22, 



made by the printer to call this species " Erypodius Latreillia." In 

 a preliminary catalogue of the Crustacea of the ' Magenta,' 1870, 

 Tozzetti inadvertently referred it to Paramithra.v peronii Milne- 

 Edwards. The synonymy given above is additional (except for the 

 first item) to the list of authorities supplied by Miers in 1881. 

 Miers considers that one specific name should suffice for latreillii 

 Guerin, 1828, tuberculatus Eydoux & Souleyet, 1841, audouinii 

 Milne-Edwards & Lucas, 184-5, septentrionalis Dana, aud brevipes 

 Dana, both dating from 1851. He does not make any reference 

 to " Eurypodius Cuvieri, Audouin," the name attached by de Haan 

 to figures of a first and a third maxilliped in plate H of his great 

 work. Cunningham in 1871, as Miers notices, accepts four species 

 of Eurypodius, though the former is doubtful whether septen- 

 trionalis is distinct from audouinii, and not very sure about brevipes, 

 nor does he name any character which he thinks trustworthy for 

 separating any of the three from latreillii. Tozzetti unites septen- 

 irionalis with audouinii, neither he nor Dana himself making any 

 remark on the fact that in the figure of septentrionalis in Dana's 

 Atlas, pi. 2. fig. 6 a, the points of the rostral horns are divergent 

 instead of convergent. From Guerin's latreillii Tozzetti thinks it 

 necessary to distinguish not only Dana's brevipes, but also Dana's 

 latreillii, for which he proposes a new name, Eurypodius danat. 

 But I am much disposed to regard this new species as founded 

 on a misapprehension. 



In an elaborate comparison of the characters, Tozzetti states 

 that of Guerin's latreillii the length is more than three inches, 

 the rostrum one-fifth of the length of the shield, the last seg- 

 ment of the pleon in the male rounded ; that of Dana's latreillii 

 the length is doubtful, the rostrum one-fourth of the length of the 

 shield, the last segment of the pleon triangular. But this is by no 

 means an accurate account of what Dana says. He speaks dis- 

 tinctly of " a specimen an inch in length ;" in which he states that 

 "the beak is about one-fourth the whole length of the carapace," and 

 that the last segment of the pleon in the male is subtriangular. 

 Between specimens respectively an inch and three inches in length 

 it is obvious that there may be many differences, without any of 

 them being specific. Still it must be admitted that even a " sub- 

 triangular " ending to the male pleon in latreillii would be very 

 difficult to explain. It is very decidedby rounded in full-grown 

 specimens. But we have to remember that the drawings for 

 Dana's Atlas of Crustacea " were to a large extent made during the 

 years 1838 to 1842, in the course of the cruise of the Expedition " ; 

 that after the engraving of the plates, and before their publication 

 in 1855, a large part of the original drawings were destroyed by fire ; 

 and further, that before Dana's return to America many of the 

 specimens had through ignorance been rendered to a great extent 

 useless for scientific purposes. It is tolerably clear that, under 

 these circumstances, in drawing up his descriptions he chose or was 

 forced to rely, not on the specimens, but on his own drawings or 

 the engravings from them. That this has happened in regard to 



