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The Morphology of a Solenogastre, 
By 
Harold Heath. 
(Leland Stanford Jr. University, California.) 
With Plates 42—43 and 1 figure in the text. 
Several years ago a number of marine invertebrates were sent 
to the zoological laboratory of Stanford University that had been 
collected in Alaska by the late Mr. CLoupsLey RUTTER of the 
United States Fish Commission. Among these was a small vial 
containing two solenogastres (one mutilated) that bore the inscription 
„from crevices in a cinder taken near Yakutak“. No additional 
data are given and consequently we are left in ignorance concerning 
the method of their capture which as the next paragraph shows 
was probably in water of considerable depth. 
A number of additional specimens of this species which I have 
named Lamifossor talpordeus (1903, 3) were taken in Alaska by the 
U. S. F. C. Str. Albatross during the summer of 1903 in the Lynn 
Canal (Sta. 4258) at a depth of 300—318 fathoms and in Chatham 
Straits (sta. 4264) where the depth was 282—293 fathoms. In both 
cases their habitat was the tenacious green mud that abounds in 
these localities. A few individuals were kept in an aquarium for 
some time, living in a normal way apparently (cf. Hearn 1904, 1) 
and forming extensive burrows immediately beneath the surface of 
the ooze (hence the specific name talpoideus, mole-like). 
