New York State Museum 



TWO NEW LAND ISOPOTDS 



BY PROF. JAMES H. STOLLER 



Of the land isopods belonging to the genus Ligidium two 

 species have hitherto been reported as found in America. One 

 of these, Ligidium hypnorum Cuvier, a widely distrib- 

 uted European species, is reported by Stuxberg^ as occurring at 

 Niagara and in California. The other, Ligidium tenue 

 Budde-Lund,- distinct from any of the European species, is re- 

 ported from Sitka, Alaska. No other facts in regard to the 

 occurrence of this genus in America appear to have been pub- 

 lished. Attention may here be called to an error in the synoptio 

 tables of the Isopoda published in the American naturalist, May 

 1900. Both the above species are there recorded as littoral. 



Following is a description of a new speciee of this genus found 

 in the locality of Schenectady N. Y. 



Ligidiuin longicaudatum (new species) 



Body elongate, oval, narrowing posteriorly. Length 9 mm; 

 width 4 mm. Surface smooth. Color dark brown, mottled with 

 irregular light brown spots; dark predominating in middle, shad- 

 ing to light at sides. 



Head more than twice as broad as long, broadly rounded in 

 front, posterior margin concave. Eyes large, occupying the 

 entire lateral surfaces of the head. 



First pair of antennae small, two-jointed, the second joint 

 longer than the first, terminating bluntly, with four or five hairs 

 radiately arranged, those pointing inwardly the largest. Second 

 pair of antennae large, five-jointed, with long flabellum. First 

 and second joints partially coalesced; third, fourth and fifth 

 joints successively longer; the flabellum nearly equal in length 

 to the fourth and fifth joints taken together; joints with hairs at 



^Stuxberg. Ofversigt of Vetensk. akad. Forhandl. 1875. 

 ^Budde-Lund. Crustacea, Isopoda terrestria. 1885. 



