14 C. BOVALLIUS. ASELLIDA. 
Diagn. Corpus elongatum, angustum. 
Caput magnum, tumidum, non rostratum. 
Oculi nulli. 
Antenne primi paris quartam partem antennarum secundi paris 
longe non 2&xquantes, flagello V-articulato instructze. 
Antenne secumndi paris longitudinem corporis multo superantes, 
flagello multi-articulato instruct2e. 
Mandibule? 
Latera segmentorum pereii non producta, nec incisa. 
Pedes pereii primi paris subcheliformes, ceteri subequales, gres- 
sorii. Dactyli pedunculati (?) uni-unguiculati. 
Pedes uri longi, styliformes, ramis binis angustis. 
The body is elongate, narrow. 
The head is large, swollen, non rostrate. 
Eyes are wanting. 
The first pair of antenne much shorter than a fourth of 
the second pair. The flagellum is five-jointed. 
The second pair of antenne are much longer than the 
body. The flagellum is multi-articulate. 
The mandibles? 
The lateral margins of the pereional segments are not 
produced, and not incised. 
The first pair of pereiopoda are subceheliform, the fol- 
lowing are subequal, walking legs. The dactyli are peduncu- 
lated (7), uni-unguiculate. 
The uropoda are long, styliform, with unequal rami. 
1... Ccidothea stygia. A. 5. PACKARD: 
Syn. AST1. Cecidotea stygia. PACKARD. >»The Mammuth Cave and 
its in habitants>. The 
American Naturalist. Vol. 
5, p. 752, fi. lag 139. 
1872. > — microcephala. COPE. >On the Wyandotte Cave 
and its Fauna». The 
American Naturalist. Vol. 
6, p. 411, fETT09: 
1573. > — stygia. PACKARD. ;On the Cave Fauna of 
Indiania». Rep. of the 
Peabody Academy, for 
1872. p. 95. 
1873. >  mierocephala  COPE. S. I. SMITH, in The American 
Naturalist. Vol. 7, p. 244. 
