PUPOIDES. 125 



[avana (R. Arango) are about typical in proportions (pi. 

 L3, fig. 3). Porto Rico has both the typical and the lardeus 

 (pi. 13, fig. 4) forms, collected by R. Swift. It is easily sep- 

 arated from marginatiis and nitidulus by the even curve of 

 the outer lip, not more strongly arcuate above, and by the 

 angular tubercle, distinctly separated from the outer lip. 

 The specimens before me, from four sources, were labelled 

 marginatus, fallax and nitidulus. I do not know that it has 

 been found in the West Indies recently. 



In South Africa P. canopictus has been found at Janson- 

 ville according to specimens sent by Mr. H. C. Burnup, prob- 

 ably introduced from India. It occurs in East Africa (as L. 

 soror Prest.) ; also in West Africa, for in my opinion P. sene- 

 galensis is not really distinct. In deference to the views of 

 several excellent conchologists and in view of some trivial 

 differences it is herein allowed subspecific rank. See No. 20. 



Leucochiloid-es soror Preston (pi. 14, fig. 7; pi. 17, fig. 3). 

 Very closely allied to L. chanlerensis and possibly only a 

 variety of that species; it differs, however, in its larger size, 

 more open umbilicus, though having a proportionately nar- 

 rower base, and in having an additional whorl, the aperture 

 is also more ovate than is the case in that species. Alt. 6, diam. 

 maj. 2.25 mm. Aperture alt. 1.5, diam. 1.25 mm. (Preston, 

 P. Z. S., 1912, p. 188, pi. 31, f. 17). 



British East Africa: Chanler Falls, Eusso Nyiro (Robin 

 Kemp). 



Nothing differentiating this from P. coenopictus has been 

 pointed out, and I can find no differences in two topotypes 

 from the author examined, one of which is drawn in pi. 17, 

 fig. 3 (No. 41591 B. Walker coll.). It measures: length 5.35, 

 diam. 2.4 mm. ; almost 7 whorls. 



Hutton's two descriptions of coenopictus follow. 



Shell about 2% lines in length; whorls 8; spire rather ob- 

 tuse ; colour brown ; aperture rounded, margins reflected and 

 interrupted by the body-whorl. Animal with four tentacles 

 buttoned at the tips, the upper pair longest and bearing the 

 eyes at the summit; colour blackish (Button, 1834). 



Shell cylindrico-pyramidal, with 6 whorls, minutely striate ; 



