692 BULLETIN 54, UNITED STATES NATIONAL MUSEUM. 



125. Genus EUPHILOSCIA Packard. 



'The genus Euphiloudd/ differs from Philoscia in the flagellum of 

 the outer antennae being subdivided into fifteen joints, while it is no 

 longer than in the latter genus. The second and third joints are rather 

 short; the inner (and smaller) antennae are very much larger. The 

 body is longer and slenderer, and the abdomen much longer and 

 wider in proportion to the rest of the body, being large and rounded, 

 not mucronate. Uropoda much longer and slenderer than in Philos- 

 cia, being as long as the basal abdominal segment is wide; thej r are 

 subequal. Eyes larger than in Philoscia. In the form of the legs 

 and the setse this genus more closely resembles Philoscia than Phi- 

 lougria, and is some respects intermediate between the two genera. "- 

 PACKARD. a 



EUPHILOSCIA ELRODII Packard. 



Euphilosda elrodii PACKARD, 5th Report Peabody Acad. Sci., 1873, p. 97. SMITH, 

 Amer. Jour. Science and Arts (3), IX, 1875, p. 477. UNDERWOOD, Bull. 

 111. State Lab. Nat. Hist., II, 1886, p. 361. RICHARDSON, American Natural- 

 ist, XXXIV, 1900, p. 306. 



Locality. Indiana. 



" Having no other species with which to compare my two specimens 

 of this species, I can only remark that it is of the usual color of the 

 species of Philoscia found running about in moss, and the cave specimens 

 had not been altered by their subterranean life. The eyes are dark as 

 usual, while the body is mottled with brown and carneous, with no 

 well-marked dorsal streak." PACKARD. b 



Family XXIX. TRICHONISCID^E/ 



Body elongated. 



Head with distinct lateral lobes; front scarcely marginate, more or 

 less produced, not separated from the epistome. Eyes composite, 

 simple or wanting. Inner lobe of the first maxillas furnished with 

 three plumose processes. Palp of the maxillipeds large, imperfectly 

 articulated; masticatory lobe terminating in a thin lash, epignath 

 narrow. Mandibles with the molar expansion well developed. First 

 pair of antennae very small, inconspicuous; terminal joint furnished 

 with olfactory hairs. Flagellum of the second pair of antennae com- 

 posed of a limited number of articles. 



Lateral parts of the thoracic segments not much expanded. 



Opercular plate of pleopoda not furnished with tracheae. 



Uropoda with the basal article expanded inside; branches subequal, 

 slender, or the outer one stouter, both conically tapered. 



"Fifth Report Peabody Academy of Sciences, 1873, pp. 9(5-97. 

 '' Idem, p. 97. 



'" For characters of family see Budde-Lund, Crust. Isopoda Terrestria, 1885, p. 243, 

 and G. 0. Sars, Crust, of Norway, II, 1899, pp. 159-160. 



