CYPMA. 11 



convinced that the latter belongs to our present group. 

 The teeth, more than half across the base, point this out, 

 and the shell which Mr. Hugh Owen names modenta, which 

 agrees in shape and colour with two specimens figured in 

 Con. 111. as hirmido, var. (12*), and in shape with Mr. Taylor's 

 Bornean shell, f. 512, in our Plate 327, seems to me to 

 fulfil all the conditions to identify it with Menkeana. It 

 differs, on the one hand, from neglect a, in its more truncated 

 and cylindrical or straight-sided form, and in having the 

 canal produced at both ends ; and, on the other hand, from 

 Owenii, in the laterally rounded base and the want of flat- 

 tened latero-terminal margins. Ooffea (ms.) differs from 

 the rest of the group, in having the dental ridges continued 

 over the dorsal margin of the posterior extremity, and this 

 is nearly always accompanied by a peculiarly lobed shape 

 in the central colour-cloud and its detachment from the 

 lower cloud. Fig. 366 represents a little shell in Miss 

 Saul's collection (probably Owenii var.), possessing the same 

 peculiarity as occurs in the so-called C. Barthelemyi, eglan- 

 tina, etc., i. e. of compressed sides and produced extremi- 

 ties. All the species named at the head of this note, with 

 the exception of felina, are so closely allied, that they may 

 possibly belong in reality to the same original type; but 

 the distinctions here explained, are worth retaining conven- 

 tionally for purposes of identification. 



28. stolida, Linn., (f. 327, 328).— C. testa oblongo-sub- 

 cylindracea ; dorso leviter biangulato, caerulescente, punctis 

 minutissimis, macula grandi quadrata centrali, maculaque 

 laterali semiquadrata ad utrumque angulum aurantio-casta- 

 neis vivide picto ; basi lateribusqne albicantibus ; extremitati- 

 bus aurantio-castaneis, productis, callosis ; apertura angusta ; 

 dentibus linearibus, columellas super basim dimidiatim de- 

 currentibus, labii prolongatis. 



29. Eeythr^ensis, Beck., (f. 323, 324). — C. testa C. stolidce 

 afSni, parviuscula, magis angustata, et subpyriformi, macula, 

 centrali irregulari, maculis cuneiformibus lateralibus nullis. 



30. beevidentata, Soivb., (f. 325, 326). — C. testa, C. stolid/e 

 affini, macula centrali disjuncta, ; dentibus paucioribus (13 

 et 14), rotundis, brevibus. 



Note. — Stolida, Brythraensis, brevidentata. The total ab- 

 sence of the four corner lateral spots, the colourless teeth, 

 narrower and more tapering form, and smaller size of Erij- 



