TESCH— PTEROPODA AND HETEROPODA 1G9 



occupies the hinder part and a great deal of the left side of the visceral mass. At 

 the right side is situated an accessory gland (fig. 1, ace. gl), the rather advanced stage of 

 development of which shows, according to Meisenheimer's investigations*, that the 

 specimen will soon pass into the ? sexual stage. 



As to the other organs, they are quite like those of the previously described species. 

 On the head, close to the buccal mass (fig. 2, bin) two small tentacles are visible (t) and a 

 pair of salivary glands. The very short oesophagus opens directly into a very wide and 

 large, thin-walled stomach (fig. 1, st), from the right upper corner of which issues a thin in- 

 testine (int), which passes over to the left side and opens distally at the ventral margin of 

 the hinder glandular groove. The heart and kidney are situated distally from the accessory 

 sexual gland, the heart with its ventricle directed forwards. 



Diameter across the fins 5 mm. 



I have dedicated this species to its discoverer, Prof. J. Stanley Gardiner. 



2. LIST OF THE STATIONS, FROM WHICH PTEROPODS HAVE 



BEEN RECORDED. 



A. Plankton Stations. 



Stat. A, May 16, 2.58—3.43 p.m. 3° 31' S., 72° 27' E. 



25 — fms. Creseis virgula (l), Desmopterus papilio (10). 

 125 — fms. Hyalocylix striata (l). 



Stat. B, May 17, 2.20—2.55 p.m. 4° 16' S., 71° 53' E. 



75 — fms. Cymbtdia sp. (1), Desmop>terus papilio (l). 

 125 — fms. Hyalocylix striata (2), Cymbulia sp. (2), Desmopterus papilio (2), 

 Desmopterus gardineri (1). 



Stat. C, May 17, 3.30—6.30 p.m. Same position. 



1200 — fms. Clio cuspidata (7), Clio pyramidata (8), Cavolinia uncinata (l), 

 Cavolinia globulosa (2), Diacria trispinosa (5), Cymbulia sp. (47). 



Stat. F, May 18, 2.10—3.10 a.m. Same position. 



Surface. Creseis virgula (l), Desmopterus papilio (4). 



25 — fms. Creseis virgula (l), Cavolinia longirostris (2), Cymbulia sp. (4). 



Stat. H, May 18, 3.58 — 5.40 P.M. Same position. 

 Surface. Hyalocylix striata (l). 



Stat. L, June 6, 8.40—9.40 p.m. N.E. Gt Chagos Bank. 

 75 — fms. Hyalocylix striata (1). 

 125 — fms. Hyalocylix striata (3), Cymbulia sp. (1). 



Stat. N, June 30, 12—12.40 p.m. Peros Atoll. 



600 — fms. Clio cuspidata (l), Clio pyramidata (1), Cuvierina columnella (2). 



* I.e. pp. 21 G, 217, PL xv. 

 SECOND SERIES— ZOO LOU Y, VOL. XIV. 22 



