ISOroDS OF NORTH AMKKICA. 



()89 



Inner process of the basal article of the ui-opoda one-fourth as loiio- 

 as the outer branch. Inner })ran('h long-, extending- nuu-h beyond tlu' 

 apex of the outer branch, being a sixth part longer than that branch, 

 the two terminal filaments short, equal to half the length of the outer 

 branch. 



Color dark, without spots. Length 9 nun. Width 8 mm." 



LIGIDIUM LONGICAUDATUM Stoller. 



Ligidmiii lungicaudntnm Stoller, 54th report New York State Museum, 1902, 

 pp. 208-211. 



Locality. — Schenectad}^ New York. 



Body oblong-ovate, about twice as long as wide, 3 mm. Mi nun. 

 I'^ropoda. l2 inm. Length of body with uropoda, S nun. long. 



Head twice as wide as long, 1 \\\\\\.\ iJ nmi., with the anterior mar- 

 gin widely rounded. Eyes round, com- 

 posite, and situated close to the lateral 

 margins. The first pair of antenna^ are 

 small and almost inconspicuous. They 

 are composed of three articles — two 

 subequal ones and a miiuite terminal 

 one. They extend to the end of the sec- 

 ond article of the peduncle of the sec- 

 ond pair of antennae. The second pair 

 of antenna' have the first two articles 

 short and subequal; the third is l)ut 

 little longer than the second; the fourth 

 and fifth aree(jual in length and each is 

 about twice as long as the third. The 

 tlagellum is com})osed of eleven articles, 

 the terminal article ending in a bunch 

 of hairs. When retracted, the second 

 antenna' extend to the ])()sterior mar- 

 gin of the third thoracic segment. 



The first four segments of the thorax 

 are subeipial and each is a little longer 

 thati any of the last thi-ee, which are sub- 

 ('(|ual. The epimera arc not distinctly separated on any of the segments. 



The first segment of the abdomen iuis the lateral parts concealed by 



«The above description is adapted from the following one of Budde-Lund's: 



El()n<j:iituni, angustuni, post attenuatuin, leviter convexum, Li've, nitidum. 



Antenna- exteriores . 



Epistoniatis linea transversa, elevata, subreeta vel medio levissime sinuata. 



Proeessus internus artieuli basalis pe<hmi analium ramo terminali exteriore (piad- 

 ruplo brevior. Ramus terminalis interior longus, apicem rami exterioris multnm 

 sui)erans, illo sexta parte longior, lilis <hiobus terminalibus brevibus, (bmidiam 

 jiartem rami exterioris a'quantibus. 



Color fuscus, immaculatus. Longitudo S\ nnn., latitudo ."> mm. — Bidde-Linj), 

 Crust. Isop. Terrestria, 1885, p. 258. 

 28589—05 44 



731.— LiGIKHM l.O.NliKAUDATUM 



(Aktek Stoi.lek). X 5;. 



