10 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 120 
B2 by suture or marked constriction. This condition was not found 
in the material examined during the present study. 
CotoraTiIon.—Two sets of prominent carmine-colored bodies in 
the prosome and the red pigment cup of the ventral eye generally 
persist for some time in material kept in 5 percent solution of formalde- 
hyde in sea water. ‘The carmine-colored bodies occur in pairs lateral 
to the midline, the anterior pair being straplike and lying between 
TI and TII immediately dorsal to the sternum. The posterior pair 
vary in shape and in the number of lobes or particles. One clump is 
found on each side of the gut usually at midlength of TIII. In the 
adult male the left member of the TIII pair is typically absent. 
The cuticle is generally colorless except for a faint blue tint in the 
swimming legs. 
Alive, adults are blue green, the intensity of the hue over the 
entire body varying from light to heavy. The blue-green color is 
located under the cuticle. It is not restricted to the epidermis but 
appears diffused throughout the outermost muscle layers. Lateral 
pairs of reddish-orange chromatophores to the right and left of the 
midline were observed in the prosome. The chromatophores are 
uniformly distributed, there being in general two pairs per pair of 
prosomal appendages. One pair is ventrolateral and can be observed 
in lateral view where it is seen near the ventral margin of the pleuron. 
The other pair seen in ventral view is associated with the appendage’s 
Bil. 
Movement of pigment in these chromatophores was observed to 
be slow. About one minute was required for a chromatophore to 
change from the reticulate stage of total pigment dispersion to the 
punctate state of extreme concentration. I have observed somewhat 
similar chromatophores in Pontellopsis occidentalis and Labidocera 
acuta. There is reason to believe that pigmentation will play a 
useful role in studies of habitat and mate selection in Pontellidae and 
such data should be systematically gathered and made available. 
Typrs.—KEsterly (1906, p. 75) refers to two specimens of jollae, a 
female ‘‘taken on the surface three and one-half miles from La Jolla, 
June 26, 1905,” and a male collected “in the cove of La Jolla, Janaury 
2, 1906,” as the types that he deposited in the collections of the 
University of California. 
None of the specimens of jollae that I found in the Esterly Collec- 
tion held in the Scripps Marine Invertebrate Collections were desig- 
nated by label as a type specimen. Collecting data on the label of 
one male, however, matches the collecting details presented in the 
original description. Some of the appendages are missing (right 
Al, P1-5). The same kind and number of appendages are mounted 
