On Two new Fishes of the Oenus Loricaria. 69 



convex, the last inflated, constricted about 2 millini. distance 

 from tlie peristome, breatliing-pore emergin;:^ at the com- 

 mencement of the constriction and extending about half a 

 whorl along the suture ; aperture circular ; peristome ex- 

 pajided, but not reflected, with an inner projecting rim ; oper- 

 culum concave, with about (j whorls. 



Alt. 10, niaj. dinm. 8^ millim. 



Ildb. Perak {(Jrubauer). 



A. pyramidalisj Bens., with which this species has sorae- 

 timos been confused, is quite a distinct species ; it is much 

 broader, has half a whorl more, coarser sculpture, a much 

 more oblique peristome, and the constricted area is much 

 longer than in A. confonnis, wliicii by its compact form 

 reminds one of the Tonkin species A. Messajertj from which 

 it, however, quite differs in other respects. Dr. O. von 

 Mollendorff informs me that this new species has also been 

 collected at Salanga Island. 



Bulimulus compactus, sp. n. 



Shell oblong-conic, tliin, very narrowly umbilicated : apical 

 whorls reddish brown, others whitish, with numerous narrow 

 oblique stripes of red-brown, the last three have a rugose 

 and somewhat malleated appearance; nucleus smooth, except 

 for some short, oblique, microscopic striae at the suture ; 

 whorls 6, moderately convex, rapidly increasing in size, the 

 last equal to two thirds the height of the whole shell; aperture 

 oval, interior light brown ; peristome thin, simple. 



Alt. 16, maj. diani. 9 millim. 



Uab. Chicani, Bolivia. 



Near B. exornatus, Rve., and B. cinereus, Rve., but differ- 

 ing from both in having fewer and more rapidly increasing 

 whorls. B. exornatus has strong radial riblets on the apical 

 whorls, whereas they are almost smooth in B. compactus. 



XV. — Descriptions of Two neio Fishes of the Genus Loricaria 

 from North-ioestern Ecuador. By G. A. BoULENGER, 

 F.R.S. 



Loricaria frenata. 



Teeth very small, numerous in both jaws. Head I5 to 1| 

 as long as broad, .5 times in total length ; snout much flat- 

 tened, constricted and rounded at the end, strongly projecting 



