44 BULLETIN OF THE 



Long. 30; lat. 23; diam. U mill. 

 Hab. Central America, at Realejo, in Nicaragua. 

 Collect. University of Copenhagen (one specimen). 

 This species never having been figured, I had a drawing made of it 

 during my stay at Copenhagen, The only known specimen of this 

 species, the one at Copenhagen, is considerably worn and nearly col- 

 orless. 



Velorita parvula, Prime. 



PL II. Fig. 4, a, h, c. 



Velorita parvula, Prime. Ann. Lye. N. H. N. Y. VIIL 418, 1867. 



V. testa tumida, subtrigonali, cordiformi, valde insequilaterali ; latere 

 antico latiore, semicirculari, postico recto, declivi ; umbonibus brevibus, 

 incurvis; lunula vix conspicua; epidermide olivaceo-fuscescente, niten- 

 tissime vestita; striis regularibus, postice evanescentibus ; cardine an- 

 gusto ; valvis la)viusculis, intus pallide coeruleis, fusco maculatis ; sinu 

 syphonalis brevi. 



Long. 35 ; lat. 31 ; diam. 19 mill. 



Hab. ? 



Collect. Prime ; University of Copenhagen (two specimens). 



During an examination I was making (1872) of the collection of the 

 University of Copenhagen, I discovei'ed a Velorita, which I was able to 

 identify as the adult of a species {parvula) which I had described from 

 the young only. There w^ere three specimens in the University, one of 

 which was very kindly presented to me. 



The ^ja?'VMZc/, compared with Cochinensis, is very much less ponderous 



Velorita Cochinensis. 



and less trigonal ; it is larger than Ci/prinoides, but less ponderous and 

 loss trigonal. The hinge of my species is much narrower and less solid 

 than that of either Cochinensis or Cyprinoides. 



