28 



suture line is oiDÜcally similar to sutures other than that of the line of 

 cell-division which is more heavily marked. 



The appended table of diagnostic characters based on measurments 

 of a number of individuals will serve more clearly to define the charac- 

 ters of the species in question. Northern forms (Alaskan) are absolutely 

 larger in dimensions of the midbody than southern (San Diego), but 

 horns, especially the apical, tend to be relatively longer in the indivi- 

 duals from warmer waters. 



Both C. lineatuiii and C. furca are common cosmopolitan sjDecies 

 alike in neritic and oceanic plankton. C. eugramimim is likewise cos- 

 mopolitan and C. teres bids fair to exhibit a similar range as it is wide- 

 spread in Pacific waters. These two species are, however, both relati- 

 vely rare, perhaps in part because of the fact that their small size permits 

 them to slip through the mesh of the silk gauze used in plankton nets. 



A few filter catches which I have examined have not indicated any 

 abundance of these two species equal to that of C. furca and C. line- 

 atum. They are apparently not well established dominant species and 

 perhajjs belong in the category of less sturdy mutants from some member 

 of the C. furca group. 



Berkeley, California, March 23, 1907. 



11. Über einige Pseudoskorpione aus Deutsch-Ostafrii<a. 



Von Edv. Ellingsen, Kragerö (Norwegen). 



eingeg. 8. Juni 1907. 



Vor einiger Zeit erhielt ich durch Herrn Embr. Strand einige 

 Pseudoskorpione zur Bestimmung, die in Amani in Deutsch-Ostafrika 

 von Herrn Prof. Dr. J. Vo sseler gesammelt worden waren. Die Samm- 

 lung enthielt drei Arten; zwei von diesen waren schon anders woher be- 

 kannt, die eine ist die weit verbreitete Art CiieUfer subruber E. Simon, die 

 andre Ch. eqiiesfer AVith, vom Kilimandscharo beschrieben, wogegen 

 die 3. Art trotz ihrer großen Ähnlichkeit mit dem gewöhnlichen Chelifer 

 cancroicles L. als neu beschrieben werden mußte. 



Chelifer equcster AVith. 

 Amani, 1905. 1 Exemplar cf. 



Chelifer subruber E. Simon. 

 Amani, 1903. 2 Exemplare. Bomola bei Amani^ 1904. 1 Exemplar 

 an Rinde. 



Chelifer strandi nov. sp. 



rf. Zwei kleine, aber deutlich gewölbte Augen, eins an jeder Seite. 



Körper mäßig breit. 



Farbe: Körper braun, Palpen und Beine ein wenig heller. 



