14 University of California Publications in Zoology [Vol. 13 



3. The propodite of the thoracic limbs is l-jointed Eolmesiella 



3. The propodite of the thoracic limbs consists of several joints, forming a 



' ' tarsus ' ' 4 



4. The propodites (tarsi) of the thoracic limbs consist of seven or eight joints 



Mysis 



4. The propodites (tarsi) of the thoracic limbs consist of six joints ....Ncomysis 



FAMILY MYSIDAE 



Subfamily Leptomysinae Ortmann (1908) 

 Mysinae Hansen (1910) 



Genus Holmesiella Ortmann 



Holmesiella Ortmann (1908), p. 4. 



Holmesiella is characterized most readily by the fact that the 

 inner ramus of the fourth pair of pleopods in the male is more than 

 twice as long as the outer. Ortmann (1908, p. 4) considers that the 

 genus belongs to the subfamily Leptomysinae, but Hansen (1910, p. 

 10) is of the opinion that it should be placed in the tribe Erythropini 

 of the family Mysinae. 



Holmesiella anomala Ortmann 



PI. 1, figs. 11, 17 

 holmesiella anomala Ortmann (1908), p. 6, pi. 1, figs. 1-10. 



While the forms I refer to this species do not exactly conform to 

 the description given b}^ Ortmann, they are so closely similar that 

 there can be no justification for making another species. The margins 

 of the telson in these animals have not more than fourteen spines 

 while Ortmann 's have from 16 to 18. The armature at the end of the 

 telson is just as described and figured by Ortmann. 



In figures 11 and 17 (pi. 1) is shown the shape of the head of 

 a large male in lateral and dorsal views ; Ortmann has not given such 

 figures. 



The larger males and females are from 20 to 21 mm. long: Ort- 

 mann states that his largest specimens are 40 mm. in length. Ours 

 are possibly not adult. 



