982 PROCEEDINGS OF THE NATIONAL MUSEUM. 



4. SPIROCYPRIS PASSAICA, new species. 

 Plate LXVI, figs. 1-3. 



Leng'th, l.iJO mm.; hcitrht, 0.8<> mm.; l)readth, ().S2 mm. 



Color brownish, witli dark ])luo patclios laterally, which coniiect 

 dorsally with a dor.sal band; another patch with a greeidsh tinge 

 anteriorh^, and still another in the posterior region. These both 

 connect with the dorsal band (tig. 2) which runs longitudinally on 

 either side of the hinge. 



Shell excessively hairy; hairs fully 0.0s nun. long; coarse and hack- 

 wardly directed. 



Seen from the side (tig. 1) the anterior extremity is widei- than the 

 posterior, evenly rounded; dorsal margin almost straight, sloping 

 slightly more rapidly posteriori}". Ventral margin slightly sinuate. 



Seen from above (lig. 2) the shell is almost a perfect elongate oval, 

 widest just in front of the dorsal transverse dark band, wdiich is 

 midway. 



The testes of the male are arranged in the form of concentric circles 

 in the anterior half of the shell (tig. 1), a very noticeable and striking 

 feature. 



Natatory seta? simple, reaching slightly beyond the terminal claws. 



Terminal claws moderately curved, and as long as the penultimate 

 segment. Sense club long and slender, three-fifths as long as wddth 

 of segment at its point of attachment. Terminal claw of the tirst foot 

 moderately curved, faintly toothed; the two terminal set* about the 

 same length. 



Terminal claw of second foot one and one-half times length of 

 terminal segment. Furca slightly S shaped (tig. 3), 23 times as long 

 as wide; dorsal margin very weakly pectinate. Terminal claw nearly 

 straight, faintly toothed, one-half as long as furca. Terminal seta 

 little more than one-half length of terminal claw, which is one and 

 three-eighths times length of su])terminal one. Dorsal seta one-half 

 length of terminal one, and width of furca from subterminal claw. 



Described from specimens obtained by Mr. E. W. Berry at Passaic, 

 New Jersey, and now^ in the collection of the National Museum. 

 Received by the musevun eTune .5, 1894. Accession No. 28378. 



12. CYPRETTA Vavra, 1895. 



(ilprdla N'avka, Hiisswas-seM )i^trac. Zanzihan, Beilieftd. Hainb. WLss. AiiHtalten, 

 XII, 189.'>.— G. W. MfLLEK, Ostraf. ans Madagas. und Ost-Afrika, Abhaiid. 

 Senck. Naturf. Ges., XXI, 1898, p. 283. 



Shell short and tumid. Natator}^ set^e reaching beyond end claws. 

 Furca with two long terminal seta^ in place of spines, and a short dor- 

 sal seta. Usual terminal seta missing. Ovary spirally wound. 

 Males unknown. 



