JOURNAL OF MICROSCOPICAL SCIENCE. 
EXPLANATION OF PART OF PLATE XIII. 
Figs. 6—8, 
Illustrating Dr. A. A. W. Hubrecht’s Remarks on the 
Minute Anatomy of Mediterranean Nemerteans. 
Fie. 6.—Segment of a transverse section through the anterior part of 
the extruded proboscis of a Drepanophorus (n. gen.). 
p. The layer of bacillar-papille. 
e. f. External layer of circular fibres. 
i. f. Internal layer of circular fibres. 
7. m. Longitudinal muscular layer, supported by a meshwork of fibres 
which communicate with the circular layers, and enclose the 
so-called beaded layer (MacIntosh). 
Fie. 7.—A separate bacillary papilla from the proboscis of Drepano- 
phorus. 
Fie. 8.—Longitudinal tangential section of a Drepanophorus. 
a. Cutis carrying the pigment globules. 
b. Fibrous basal membrane sending supporting fibres into the cutis- 
tissue, and others which traverse 
e and d. The circular and longitudinal muscular layers. 
hh. Fibrous dissepiments, being the continuation of those fibres after 
they have entered the body-cavity. These dissepiments enclose 
between them the ccecal appendages of the intestine (g), and 
the transverse blood-vessels (e). The appearance of the gene- 
rative products (7) is accompanied by a splitting-up of these 
dissepiments into two distinct plates, which im the normal con- 
dition lie close against each other. 
