510 MEMOIKS OF THE NATIONAL ACADEMY OF SCIENCES. 



Plate XXIV. 



Fig. 1. Rig:ht fifth pereiopod of male of Alpheus saulcyi, var. brevicarptis, seen from outer side. 



x33. 

 Fi». 2. Small chela of male of ^4..s«M7e^«, var. tonjf»c«»-^H.s. From No. 9, Table I. x33. 

 Fig. 3. Small chela of male of A. saulcyi, var. brericarptis. From No. 8, Table I. Compare with 



the typical form of the other variety, shown in Fig. 2. x33. 

 Fig. 4. First pleopod of male of ^. saulci/i, from "loggerhead" sponge. x33. 

 Fig. 5. Left first pleopod of female of A. saulcyi, from '-loggerhead" sponge. A single egg is seen, 



attached to three hairs of the protopodite. The hairs are coated with glne, and the 



gluey threads are twisted into a chord, which is continuous with a tbin sheet of this 



sul)stance (the membrane of attachment or secondary egg-memJbraue which envelopes 



the egg). Below is seen a single hair, from which an egg has broken loose. Drawn 



from an alcoholic specimen. x33. 

 Fig. 6. Right second pleopod of larger female of A. saulcyi, showing a number of eggs attached, 



seen from behind, x 14. 

 Fig. 7. First maxilla of A. saulcyi. Endopodite bent out of po.sition, to a point below the large 



coxopodite. x 64. 

 Fig. 8. Large chela of female of A. saulcyi, from "loggerhead" sponge. Compare with the brevi- 



carpus shown in PI. iv. x 33, 

 Pig. 9. Right second maxilla of A. saulcyi, seen from outer side. x64. 



