Caprellidae From Laguna Beach, II 



R. LA FOLLETTE 



Three genera are included, among them, two new species. Four 

 species were considered in an earher number of this pubHcation, 

 making a total of seven species of the family Caprellidae from La- 

 guna. Although the territory accessible at low tide was very thor- 

 oughly worked over, yet no doubt several more species could be 

 secured in the deeper water off shore by dredging, and the list of 

 forms is not yet complete. 



Caprella acutifrons Latreille 



Mayer in his description of the Caprellidae of the Siboga Expedi- 

 tion, gives as many as ten varieties under the species name acuti- 

 frons. Among them the variety, verrucosa, which includes several 

 specimens from California, is quite similar to my specimens here 

 described, but I think it best to only use the species name acutifrons 

 at present. 



The peraeon of the male (Plate I, Fig, 1 ) , is covered with several 

 blunt prominences and many short blunt tubercles, the latter as in 

 C. geometrica. Cephalon with a short horizontal spine; first seg- 

 ment of body a little shorter than the next three, which are of equal 

 length; fifth about as long as the first; sixth and seventh shorter, 

 respectively. The branchia are ovate, slightly longer than broad 

 and moderate in size. Both pairs of antennae missing in my speci- 

 men. Eyes small and round. First gnathopod small, about one- 

 fourth as large as the second and attached far forward; palm broad, 

 triangular shaped, tapering toward the finger with a few scattered 

 hairs along the border and four tooth-like spines at the base; finger 

 finely toothed along the inner margin. Second gnathopod (Fig. 2) 

 attached about the middle of the second segment, basal joint short 

 and thick, equal in length to the other joints combined; palm broad 

 and toothed as in C. geometrica; inner margin slightly concave and 

 armed with a few short hairs and a large prominent tooth at the 

 base and a large flat tooth at the distal extremity; finger short and 

 massive. Third, fourth and fifth peraepods (Fig. 1), similar in 



