﻿136 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 102 



KEY TO THE NORTHERN CALIFORNIA SPECIES OF lANIROPSIS 



a\ Lateral borders of pleotelson with spinelike serrations. 



&\ Pleotelson with 4 to 7 spinelike serrations on each side. Lateral apex 

 of each first male pleopod not directed abruptly posteriorly. 



I. analoga, new species 

 6^ Pleotelson with 2 spinelike serrations on each side. Lateral apex of each 

 first male pleopod directed abruptly posteriorly. 



I. epilittoralis, new species 

 V. Pleotelson with 3 spinelike serrations on each side. First male pleopods 



similar to but not identical with &^ I. tridens, new species 



al Lateral borders of pleotelson lacking spinelike serrations. 

 6\ Uropods half or less than half length of pleotelson. 

 c\ Pleotelson with distinct posterolateral angles lateral to uropod inser- 

 tions. Cephalon lacking anteriorly projecting anterolateral angles. 



1. kincaidi derjugini, new combination 

 a'. Pleotelson lacking posterolateral angles lateral to uropod insertions. 

 d\ Cephalon with a distinct spinelike anterolateral projection on each 



side of frontal margin I. magnocula, new species 



d'\ Cephalon with anterolateral margins evenly rounded. 



I. minuta, new species 

 6". Uropods considerably exceeding half pleotelson length. 



c\ Uropods exceeding pleotelson length. Apex of each first male pleopod 



bifurcating I. montereyensis, new species 



(T. Uropods not exceeding- pleotelson length. Apex of each male first pleopod 

 not bifurcating I. kincaidi kincaidi Richardson, new combination 



lANIROPSIS KINCAIDI KINCAIDI Richardson, new combination 



Figures 56, c; 57, a-e 



Janlropsis kincaidi Kichaedson, 1904a, pp. 221-222, figs. 102-107; 1904b, pp. 



665-666, figs. 7-12 ; 1905, pp. 456-457, figs. 509-514. 

 laniropsis pugettensis Hatch, 1947, p. 172, figs. 170-171. 



Diagnosis. — Lateral borders of pleotelson smooth, lacldng spine- 

 like serrations, but bearing several setae ; posterolateral angles acute 

 but not projecting. Uropods not exceeding the pleotelson length. 

 Each first male pleopod with lateral apex flattened, expanded, and di- 

 rected laterally. First antennal articles considerably elongated com- 

 pared with those of /. kincaidi derjugini (compare figs. 57, e and 57, /). 



Types.— 1\\ the collection of the United States National Museum, 

 No. 28717, from Yakutat, Alaska. Homoeotype male, length 3.8 mm., 

 width 1.0 mm. 



Geogmphical distribution. — Komandorskie Islands, Bering Sea, to 

 Monterey County, Calif. 



Material examined. — Specimens examined, 38 males and 50 females, 

 were collected at various localities from the Komandorskie Islands, 

 Bering Sea, to Monterey County, Calif. 



Ecology. — See under RemaThs. Ovigerous specimens were found 

 during May and June. 



