4 NEW CHROMOGENIC MICROCOCCUS 267 
regard to the two points most evidently characteristic of this 
form, its pigment coloration, and non-development on potato. 
Migula describes eleven non-liquefying micrococci as Rot 
wachsend. Of these, seven may be thrown out, since they are 
distinctly said to have a seal, or carmine red, or vermilion pig- 
ment, Another is “gray on agar, red in milk, and does not grow 
at 37°.” The other three are said to be “flesh red,” the exact 
color of which is doubtful. Of these: 
(1) M. carneus Zimmerman is described by Zimmerman him- 
seli*as having a deep flesh red, almost violet tinge, and growth 
potato. Lustig describes a form, Coccus ruber,5 found in water 
by Maschek which is probably identical with this. 
(2) M. sarcinoides Migula (n. sp.)® looks often like sarcina, 
Itis also described as a very large coccus, 1.8—2.5 » in diameter. 
Nothing is said of the potato growth. Gelatine plate colonies 
feach 5™" in diameter. Color on agar is a warm flesh red, more 
mense along the middle line. Bouillon has a flocculent whitish 
srowth and a red sediment. This description, I think, hardly 
comcides with that of the salmon-pink form, although much 
Pends upon what is meant by ‘flesh red.” 
(3) M. rubellus (Migula)s is morphologically scarcely distin- 
Suishable from the last, and shows the same sarcina grouping. 
‘ a are almost opaque, dark gray-brown. The descrip- 
of . gelatine stick culture has some resemblance to that 
ate “an form, 2.¢.,a dry surface colony slowly spread- 
act als of tube and having underneath a deep dry cavity of 
ot gelatine. But this growth is said to bea “bright 
red.” All cultures have a trimethylamine odor; on agar 
8s are finely dentate, and bouillion has a red slimy 
ough points of difference to distinguish the forms. 
class of germs which Migula describes as liquefying 
Mine i out of the twelve named that three have we 
2 Babes).  hispiiat (MW. rubens, M. persicus Kern, M. haemat . 
hes Swine red (M. rubiginosus Kern); one has a vio 
: akterien unserer Trink- und Nutzwiassser. Chemnitz, 1890. 
tik der Bakterien des Wassers 40. 1893. $Op. cit. 
Streak the ed 
— Sediment, en 
0 the 
Selatine 
