20 W. A. HERDMAN. 
The two gatherings of general Plankton are so much alike that they may be 
taken together. The localities are :— 
(1) “19. x. 01; Lat. 40° 124’8.; Long. 32° 274! E.” 
(2) “22. x. 01; Lat. 45°S.; Long. 40° 57'E.; 8 pM.; surf. temp. 40°.” 
They both contain the following species of Salpide (none of them in good 
condition) :— 
SALPA RUNCINATA-FUSIFORMIS, Chamisso—Cuvier, var. ECHINATA, Hrdm. 
The solitary form of the strongly echinated variety of S. fusiformis was described 
hy Herdman from the ‘ Challenger’ Collection as a distinct species, Salpa echinata. It 
is, however, perhaps better, in the light of further knowledge, to regard it as a variety 
merely. It was obtained by the ‘Challenger’ Expedition in the South Pacific, near 
the Straits of Magellan, and off the West Coast of Africa, and by Prof. Ritter * off 
the Californian coast. It has also been described by Dr. Apstein t from specimens in 
the Hamburg Museum. The present specimens measure 3 cm. in length. 
SALPA MUCRONATA-DEMOCRATICA, Forsk.—Solitary Form. 
A large number of specimens with flagella measuring up to 6 mm. in length— 
average length of body, 1 cm. Also a few specimens with much larger flagella up to 
13 mm. long. 
SALPA MUCRONATA—DEMOCRATICA, Forsk.—Gregarious Form. 
Many specimens, measuring about 1 cm. in length. 
SALPA HEXAGONA, Quoy and Gaim.—Solitary Form. 
Some imperfect specimens, with very broad muscle bands, probably belong to 
this species. 
SALPA HEXAGONA, Quoy and Gaim.—Gregarious Form. 
A few specimens apparently of this form, with two embryos each. 
Passing now to the Collection in 48 tubes, we have :— 
SALPA RUNCINATA-FUSIFORMIS, Chamisso—Cuvier. 
From the locality “1. 1 02; Lat. 63° 43'S.; Long. 175° 43’ E.,” there are 
two large specimens of the gregarious form, measuring about 5°5 cm. in length, and 
* The Pelagic Tunicata of the San Diego region, excepting the Larvacea. Univ. of Cal. Public. Zool., 
vol. ii. (1905), p. 67. 
t Die Salpen, Deutsche Stidpolar-Expedition 1901-1903, Berlin, Bd. ix., Zool. 1 (p. 165). 
