luigtum QDarinc Laboratory i-!> 



ible by dissection, composed of three small articles. Maxillipeds 

 have a palp of three articles. Pal]) of mandibles wanting-. 



Segments of thorax subeqnal ; post-lateral angles of last three 

 very marked and produced. Epimera not distinct. Legs all similar, 

 ambulatory, very much spined and increasing in length from iirst 

 to seventh. 



Abdomen abruptly narrower than thorax; first five segments sub 

 equal. Post-lateral angles of third, fourth and fifth produced. Last 

 abdominal segment produced medially. Median length about half 

 the greatest width. Basal segment of uropod about as wide as long 

 and extends beyond last abdominal segment; inner ramus a little 

 less than half as long as the outer; both rarni are spiued. 



Dynamene glabra Richardson 

 (Figure 72) 



Locality Found on Phyllospadix at Laguna Beach, California. 



Color Pale orange brown, somewhat mottled, with white spot 

 on telson; become dark brown in alcohol. 



Body convex ovate, about twice as long as wide, 3 mm. by iy 2 

 mm. ; surface smooth. 



Head small and rounded anteriorly. Eyes placed in the post- 

 lateral angles. First pair of antenna with first article of peduncle 

 less than twice as long as wide; second and third articles subequal 

 and narrower that first. Flagellum composed of twelve articles. 

 Second antenna with first article of peduncle about as long as wide, 

 small; second twice as long as first; third about the same length as 

 first ; fourth similar to second ; fifth one and a third times as long as 

 fourth. Flagellum composed of sixteen articles. Maxilliped pro- 

 vided with a palp of five articles. Mandible with a palp of three 

 articles. 



Thorax has first segment longer than those succeeding, which 

 are subequal. Post-lateral angles of last three are produced. Legs 

 all ambulatory; dactylus bi-ungulate. 



Abdomen has the penultimate segment composed of several coal- 

 esced segments, though the suture lines were not clear in the speci- 

 mens at hand at the time of the drawing. Other specimens found 

 later showed two short suture lines. Last abdominal segment trian- 

 gular with a median fissure at the posterior extremity. Inner ramus 

 of uropod about as long as telson and immovable; outer branch half 

 as long as inner, and movable. 



Cirolana harfordi var. spongicola n. var. 



(Figure 7.'!) 



Locality Sponges at low tide mark, Laguna Bead), California. 

 Color White, but marked with fine black dots. 



