604. REPORT— 1904. 
The specimens belong to the genus Dolichoglossus and to a new species of that 
genus which I propose to call D. ruber. It was first found by Mr. G. P. Farran in 
a dredging from Ballinakill Harbour, co. Galway. 
It was later obtained by digging in a mixture of wet coarse sand and mud at, 
extreme low-water spring tides at the same place. The sand must be wet, as dry 
sand of the same quality yielded no specimens at all. They were found 8-12 inches 
below the surface, in company with Solen, Arenicola, Echinocardium, Synapta, 
and Polycheta of various species. 
The species is very fragile, and no whole specimens were obtained. The 
largest portion taken measured 12°5 cm,, and it appeared to be nearly complete. 
The colour of the proboscis is a light pinky red; the collar was a deep scarlet, 
while the rest of the body varied from a reddy brown in the branchial region to a 
dark brown at the tail end, spotted with lilac. 
The animal secretes a large quantity of mucus, especially about the region of the 
collar. With this mucus it cements the sand in which it is found, in the form of a 
thick tube, in which it lives, and which must be a considerable ’ protection to its 
fragile body. 
The proboscis is long and attenuated, and is capable of considerable extension 
and retraction. There is a slight groove extending a little way up the dorsal 
surface. 
The collar is about twice as long as broad, and has a thickened anterior and 
posterior border. The branchial region is from two and a half to three times as 
long as the collar, and the number of branchial openings varies from about 56 
to 64 pairs. 
Mr. Punnett, to whom the specimens were first submitted, kindly informs me 
that this species has two proboscis pores, thus distinguishing it from all specter of 
the genus except D. otagoensis. 
The relatively great development of the circular proboscis musculature, 
arrangement of the longitudinal muscles of the proboscis, the complete and 
continuous lumen of the stomochord, and the great size of the pericardium are also 
distinguishing features. 
TUESDAY, AUGUST 11. 
The following Papers were read :— 
l. The Budgett Memorial. 
(i.) Mote on the Developmental Material of Polypterus obtained by the 
late Mr. J. 8. Budgett. By J. Grawam Kerr. 
The material consists of about two hundred eggs and larvee, ranging from before 
fertilisation to the ten-day larva. Segmentation is at first almost equal, later on 
unequal to about the same degree as in Lepidosiren. Gastrulation begins with the 
appearance of a deep groove about the level of the equator. The groove increases 
in length, forming eventually a closed curve and surrounding the yolky mass of 
the lower pole, which gradually becomes a typical but enormously large ‘ yolk 
plug.’ The yolk plug diminishes in size, and eventually disappears, very much as 
in Amphibia. A medullary plate arises as in the Amphibia, and the edges of this 
arch inwards in normal fashion to cover in the central canal of the nervous axis. 
The depression to form the infundibulum, and the deposits of pigment which 
foreshadow the development of the eyes, appear while the medullary groove is 
still widely open. After closure of the medullary groove the trunk of the embryo 
projects anteriorly and posteriorly, by the development of head and tail folds—the 
axis of the trunk being nearly straight instead of being curled round the egg. At 
a very early stage there appear two pairs of projections in the head region— 
anteriorly, the rudiments of two conspicuous cement organs; farther back, the 
rudiments of the two large external gills. The larva soon develops a tadpole- 
