266 Southern Cross. 



sometimes scattered over the surface, i.e., extra-maroinal, as shown 

 in fig. 2, PL XLI, The rest of the elytral surface is beset with 

 very minute bosses resembling the pustules on a much smaller scale, 

 but not like the definite spines noted in the preceding variety. 



An interesting point is raised by the contemplation of fig. 3, 

 PI. XLI., namely, as to the probability of Hermadion longicirratus, 

 Kinberg, being co-specific with Harmothoe sjnnosa. What makes 

 the former a Hermadion appears to be merely tlie exposure of free 

 segments behind the elytra, as in Lagisca} If, however, this 

 character fails to prove a sure guide, as in the case of the lagiscoid 

 variety described above, then the extraordinary resemblance between 

 the posterior and anal cirri of the example figured here and those of 

 Kinberg's specimen of Hermadion longicirratus {' Eug. Eesa.,' Taf. VI., 

 fig. 33) cannot fail to impress, the chief difference being that, in the 

 latter, some of the posterior segments were not concealed by the elytra. 



Prof. Ehlers (1897) is doubtful whether Hermadion longicirratus 

 should be separated from H. magalhacnsi, Kbg., the two forms 

 having been obtained at the same point of the Magellan Strait. As 

 indicated above, my observations rather lead me to believe that 

 Kinberg's H. longicirratus is generically distinct from H. magalhaensi, 

 and belongs to the series of Harmothoe spinosa. 



The form known as Lagisca vesiculosa (Gr.) is not contained in 

 this collection. It cliiefly differs from tlie typical H spinosa in the 

 presence of vesicular swellings at the posterior border of tlie elytra 

 in addition to the smaller pustules, some of which are borne upon 

 the vesicular elevations. 



Prof. Ehlers (1897, p. 15) has the following suggestive remark : 

 " Bei grosserem Material wird sich feststellen lassen, ob die Pohjnoe 

 vesiculosa [i.e. Lagisca vesiculosa (Gr.) = L. aniarctica, Mclnt.] niclit 

 ganz in den Varietatenkreis der Harmothoe s^iinosa, Kbg., eiuzube- 

 ziehen ist." 



2. Haemothoe ceossetensis. 



(PI. XLIIL, figs. 3 and 9-11.) 



Lagisca crosetensis, Mcintosh, 1885, ' Challenger ' Kep., p. 88. 

 Elytra hirsuta parce fimbriata, spinis magnis confertis munita. 



The collection contains two specimens dredged in 26 fathoms 

 off Cape Adare in company with H. s;pinosa, var. typiea, etc. They 

 are well-marked forms, presenting a hirsute appearance, due alike to 



^ The type of Hermadion is H. magalhaensi (sic), Kbg., a well-marked species 

 not represented in the ' Southern Cross ' collection. As employed by Kinberg, his 

 genus Hermadion also included Malmgren's conception of Lagisca. 



