BDI.L. U. S. B. F., 1909. 



Plate XXXV. 



cor 

 _ 2 

 - 1 



Fie 



^LlZHT' 



Fig. ::. 



'XS.^_.jnfi,^ 



Fig. 3. 



f77 in i y 



EnA 



—2 



Fig, 7- 



Fig. I. — Left eyestalk, frota above, or from what was originally the anterior side, cor, transparent cornea, parts 

 of which are shown in figures 2 and 3 ; i and 2, segments of stalk, the horaologies of which are doubtful. 



Figs. 2 and 3. — Parts of corneal membrane of compound eye, composed of modified hexagonal facets of individual 

 eyelets, each being secreted by two corneal cells, the boundaries of which are indicated in figure 2 . Enlarged 

 about no times. 



Fig. 4. — Left first antenna from above. cA. .j, chemical or " olfactory " setae of primary outer flagellum (O1*/. /^;); 

 mm, modified membrane over statocyst, which opens to outside by pore. 



Figs. 5 and 6. — Left second antenna from upper and under sides. Ex, exopodital scale; End, long multiarticulate 

 "feeler"; v. gl, position of valve of green gland, which opens on under side of coxa {g. gl). 



Fig. 7. — Left mandible from inner side; ab. m, opening muscle; f. ad. m., tendon of closing muscle; g, groove in 

 which palp (p) and upper lip work. Figures on plates xxxv-xxxix, unless otherwise designated, represent the 

 serial appendages from, left side of a female lobster about loM inches long and in hard shell, drawn to same scale, 

 as seen from anterior side, and but little under natural size. The segments of the permanent limb are num- 

 bered from base to apex. 



